At Kinvalve, there are many popular types of stainless steel check valves including stainless steel swing check valve, stainless steel wafer check valve and stainless steel inline check valve, as well as stainless steel check valve flanged and stainless steel silent check valve for your specific application.
Stainless steel swing check valve
Kinvalve stainless steel swing check valve is the simplest check valve you can choose. Simplicity features more. The disc on the top cap of this t pattern check valve provides automatic backflow prevention service.
Kinvalve stainless steel swing check valves are available in threaded end and flanged end connections for your choice. Both of these two types of stainless steel swing check valve features metal sealing surface.
At Kinvalve, threaded end stainless steel swing check valves provide simple construction and cost down selection for your full range of water, oil and gas applications.
Kinvalve stainless steel swing check valves are made of SS316 and SS304 and have a working pressure of 200PSI(WOG).
Kinvalve flanged stainless steel swing check valves are available in ANSI/API, DIN and JIS flange standards with the end flange of FF, RF or RTJ for your specification.
Our flanged stainless steel swing check valves are relatively large check valves with the size ranging from 2inches to 12inches.
Compared to threaded stainless steel swing check valves, our flanged stainless steel swing check valves are relatively high-pressure check valves, and available in Class 150/300, PN16/40 and JIS 10K/20K. This type of swing check valves is designed with bolt bonnet cap for your easy maintenance.
Kinvalve stainless steel swing check valves are full port check valves, with large full flow capacity. And these types of swing check valves are only suitable in your horizontal pipelines.
Stainless steel wafer check valve
Kinvalve stainless steel wafer check valves provide a compact short pattern sandwich flangeless wafer body. These stainless steel wafer check valves are designed to install between two flanges in accordance with a variety of international standards.
Kinvalve as an expert of wafer check valve manufacturer, can offer full range of stainless steel wafer check valves including dual plate stainless steel wafer check valve, central-guided single disc stainless steel wafer check valve and single plate swing type ss wafer check valve.
Choose a stainless steel wafer check valve and you&#;ll benefit from its shorter face-to-face dimension and lighter weight, which also means it saves your money.
Another advantage of the stainless steel wafer check valve is its spring-loaded dual plates. This unique design features lower cracking pressure and lower head loss in your applications.
In the case of dual plate stainless steel wafer check valve, high-quality springs provide enough torque for a quick closing.
Special alloy material provides corrosion resistance and long service cycle. Independent double shaft and stop shaft design ensures stability at high flow rates.
The above characteristics all offer your advantages of reliable performance and long service life.
And the Kinvalve central-guided single disc stainless steel wafer check valves also with the name of disco check valves are a type of axial flow check valves.
Kinvalve central-guided disc stainless steel wafer check valve consists of four main components including the body, a disc, a spring and a spring retainer.
The disc is in a plane at right angles to the flow fluid and moves parallel with the flow. The retainer holds the disc that is resisted by the spring in the axial place.
In the case of this stainless steel wafer check valve, metal sealing surface provides wear resistance and soft seat will be your option when &#;zero leakage&#; is required in your application.
Stainless steel inline check valve
In a typical inline spring check valve, you can see a valve plate parallel to the centerline of the valve shaft. This stainless steel inline check valve features a central-guided disc applying for a quick shutoff and a low cracking pressure.
Kinvalve stainless steel inline check valves are available in two types of constructions. The usual type is vertical check valve with threaded end with the other name of stainless steel spring check valve, and the other one is wafer type disc check valve or disco check valve.
Both of these two types of stainless steel inline check valves are designed with central-guided, spring-loaded disc, providing parallel flow direction with your pipeline. The latter is also a ss wafer check valve mentioned above.
This vertical stainless steel spring check valve has thread end with 2 piece or 3 piece body. This kind of stainless steel spring check valve provides a lower-cost solution with reliable tight seal.
It&#;s possible to design very precise spring pressure, due to this stainless steel inline check valve can also be found with specific cracking pressure to meet your personal requests.
Stainless steel check valve flanged
At Kinvalve, there are two types of stainless steel check valves flanged, flanged swing check valves and double flanged dual plate check valves.
Kinvalve swing type stainless steel check valve flanged offers full port with large flow area, it&#;s a full port check valve. And most of these stainless steel check valves flanged are bolt bonnet check valves suitable for your maintenance and repair.
Kinvalve swing type stainless steel check valve flanged can be only used in your horizontal flow applications, which greatly limits the flexible usage in your systems.
And swing check valves are usually recommended for your simple applications with low flow velocity and less pressure differential changing.
For the double flanged dual plate check valve, this stainless steel check valve flanged excel in silent operation with split spring-loaded disc. So this inline spring load check valve is also a silent check valve.
Stainless steel silent check valve
Kinvalve stainless steel inline check valve has the shortest action path, so you can close the pipeline faster and prevent backflow. This design benefits you an advantage of reducing the chance of water hammer.
In the system of using pump, water hammer is a very destructive factor; you must eliminate its potential impact or even damage on the pump and other equipment.
When the fluid in the pipeline suddenly stops (this situation is usually caused by you suddenly shut down the pump or quickly close the shut-off valve), high-pressure shock waves occurs. This kind of high-pressure wave impacts on the valve plate, producing huge sound and vibration, forming water hammer.
The flow reversal generated by water hammer will exert great stress on your pipe, impact the pipe, and cause potential damage to the pipe.
Kinvalve stainless steel silent check valves are designed with spring loaded, central-guided discs providing axial flow parallel with your pipeline.
As a professional stainless steel check valve manufacturer, Kinvalve can custom your stainless steel silent check valve in both metal seats and soft seats to provide corrosive and wear resistance and drip-tight shutoff.
At Kinvalve, 304 and 316 stainless steel check valve are the commonest types of SS check valve. Our 316 SS check valves are more corrosive resistant than 304 stainless steel check valves but more expensive in price.
Kinvalve SS check valves are your top choice in industrial services because of the material characteristics. The stainless steel check valves are robustness.
One of the most amazing qualities of stainless steel check valve is its resistance against rust. This is why stainless steel check valves are an ideal choice in various industries.
When our stainless steel check valves are used for drinking water, Kinvalve always choose the high grade stainless steel material to avoid the secondary pollution to the potable water system.
As a leading stainless steel check valve manufacturer, Kinvalve has invested in a large casting factory and established a good cooperation with two local casting suppliers.
This allows us to handle the product quality control over the whole producing chain for you. Our warehouse with over square meters has sufficient semi-finished and finished stainless steel check valves and accessories to meet your delivery requirements.
Just give us a call, we never let you down!
This guide covers everything you need to know about stainless steel check valve.
So, if you want to be an expert in stainless steel check valve, read this guide.
This type of check valve refers to a kind of checkvalve consisting mainly of stainless-steel material.
Its function is to allow for the unidirectional flow of fluid in an application.
Stainless steel check valve
Stainless steel check valves have different uses depending on various factors such as size.
However, typical applications include:
It is crucial to select the ideal type of these valves for the different applications.
The use of a stainless-steel check valve is critical in different applications at different stages.
However, it is essential to use it in systems that experience backflow and those likely to condensate.
Condensate and backflowing cause water hammer, which results in malfunctioning of your piping system.
The use of these check valves prevents such an occurrence, thereby ensuring you have a smooth fluid flow.
To understand how a stainless-steel check valve functions, you have to know some of its features.
For instance, it features an inlet and an outlet that allows for one-way flow of the fluid.
For the flow to be adequate, the pressure of the inlet has to be higher compared to the outlet flow.
This creates a differential pressure which allows the valves to remain open hence fluid flow.
Lack of differential pressure can cause the valve to close hence no fluid flowing.
This can be due to the pressure of the outlet being higher than that of the inlet.
The working of these valves requires no intervention since they can function on their own.
This means you don&#;t need a handle, an actuator, a lever, or human help for its functioning.
A stainless-steel check valve offers numerous benefits to applications and those using these applications.
Such benefits include:
The overall cost of using and maintaining these check valves is lower than not using them in your application.
This is because of the significant benefits that it brings, which prevents malfunctioning of your piping system.
The use of a check valve helps protect your application, thereby ensuring there is a smooth fluid flow.
Such protection includes preventing backflow and formation of water hammers.
Backflow and water hammer can lead to the malfunctioning of your application.
This has the potential of raising maintenance costs for your application.
The overall power consumption for your system reduces when using these stainless-steel check valves due to an enhanced fluid flow.
Backflow and water hammer issues tend to increase the power consumption since the system applies more pressure for continuous fluid flow.
Backflowing and water hammer issues tend to increase the downtime for your machine.
This translates to lower production and an increase in maintenance costs.
The use of a stainless-steel check valve minimizes this ensuring you get maximum production.
The primary material is the fabrication of a stainless-steel check valve is stainless-steel.
However, in some of its parts, like the gasket section, you can find rubber which facilitates the working of the check valve.
The unique features of stainless-steel check valves make them the best option for different applications.
Some of these features are:
Stainless steel check valve
The design of these check valves is relatively tiny compared to other types.
This allows for easy installation and operation.
The compact design also allows you to easily detect when the check valve fails, thereby facilitating repair.
The manufacturing process of a stainless-steel check valve allows for the flow of fluid in one direction.
This means that the fluid flows in one direction and out through the other direction.
The advantage of this is it facilitates the flow of fluid while reducing ack pressure, damaging your application.
The design takes into consideration the outer material, which is stainless steel.
This material offers unique characteristics, which makes it ideal for use in an extreme application.
For instance, its lack of corrosion allows you to use it in salty water treatment plants.
The reaction of stainless steel to other elements is poor, which helps in reducing contamination in food industry applications.
The advantage of this check valves is it features two valves that facilitate its operation.
The design of these valves, an inlet, and an outlet allow for fluid to flow into one and leave through the other.
This prevents backflow pressure, thereby ensuring its smooth functioning.
spring stainless steel check valve
Yes.
A silent stainless-steel check valve is the same as a spring stainless-steel check valve.
The advantage of this type of check valve is it prevents water hammer effects.
The springs in these valves control the closing mechanisms when there is an abrupt stop of the pumping process.
The abrupt stop can result in reverse flow and water hammer effects, which can adversely impact the check valve.
A full port stainless-steel check valve features a straight fluid flow.
This means that the fluid flow is constant as it flows through the check valve.
The diameter of the inlet and outlet of the stainless-steel check valve is the same as the diameter of the inner part of the check valve.
The flow path of a standard port stainless-steel check valve is straight.
However, it narrows as it passes through the valve.
This creates a pressure drop as the fluid flows through the valve.
The inlet and outlet of this type of valve have the same diameter.
However, the diameter of the inner part of the valve is smaller than that of the inlet and outlet, resulting in a pressure drop.
The application of these two types also differs.
A complete port stainless-steel check valve is the best option to use in applications where a pressure drop may affect its performance.
A standard port stainless-steel check valve is ideal for use in an application that requires little resistance to perform effectively.
It is a relatively cheaper way of controlling fluid flow in different applications.
Full port stainless-steel check valves usually require a higher force to open compared to a standard-steel check valve.
The best type of stainless steel to use depends on your application.
We have different types of these valves whose design and specifications differ.
You, therefore, have to specify your application for you to get the ideal stainless-steel check valve.
Common types of these valves are:
Swing check valve is standard in various applications due to their unique characteristics.
For instance, they don&#;t need control or external power to function.
Its working depends on the direction of the fluid flow.
The valve can either have closed bushings or lack it.
Swing check valves with closed bushings lack an open or close indicator.
Instead, the check valve is mounted using weight or spring and lever for visibility check.
Swing check valve
This type features a rubber diaphragm which opens when you increase the pressure of the inlet.
They usually have a free-floating diaphragm which is self-centering.
You can use this type of stainless-steel check valve in vacuum applications or low-pressure flowing applications.
Diaphragm check valve
This type of check valve has a similar appearance to an eccentric butterfly valve.
It features a double flanged body and is relatively small in terms of length.
The position of the shaft eccentrically from the centerline of the body helps in holding the disc.
It is an ideal check valve to use in systems with a low fluid flow or pulsating flow.
Tilting disc check valve
This valve is relatively small and compact with no external part.
The advantage of this type of valve is it is relatively cheaper than the other types, and they are highly reliable in performance.
The main limitation of this valve is its lack of either an open or close indicator.
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Ball check valve
You have to consider the following when selecting your stainless-steel check valves:
Stainless-steel check valves are available in different types which are suitable for different application.
Selecting the best type for your application means you get quality performance.
Always ensure you indicate the application for your manufacturer to give you the right stainless-steel check valve.
The size of your application should dictate the stainless-steel check valve that you are to purchase.
An ideal check valve should fit perfectly on your application and ensure there is no leakage.
For compatibility, you can indicate the specifications of your application, such as size and thickness.
This helps in identifying which stainless-steel check valve works best in your application.
An effective stainless-steel check valve should pass the necessary quality standards before releasing into the market.
This ensures you have a suitable valve and you get quality performance.
There are varying prices for these stainless-steel check valves in the market due to different factors like manufacturers.
You, therefore, have to shop around for a price that fits your budget.
However, you don&#;t have to compromise quality for the price.
This means that the check valve should adhere to all the quality standards for the price you select.
Before installing a particular stainless-steel check valve on your application, you have to check on its specifications.
This is in terms of the type of stainless-steel check valve, its length, and size.
All the specifications should correspond to that of your application for a bubble-tight seal.
Take time to inspect inside your check valve in case there is an obstruction within it.
The edges of your stainless-steel check valve should be even for a smooth connection.
Once you have confirmed all these details, you can now fix the check valve onto its position depending on its joining type.
The joining type can either be screw or flat.
The next step is to test the connection to ensure your valve is working appropriately.
Tests that you can use here include leaking and water flow test.
Testing helps in accessing the functionality of your valve.
You must use isolators when installing your stainless-steel check valves which facilitate the maintenance process.
The main types of isolators that you can use here are gate valve isolators.
The installation of the stainless-steel check valve should be 5x its distance from the pump.
It can also be 5x its distance from any fitting, resulting in an interruption of the flow speed such as ends.
The durability of a stainless-steel check valve depends on various factors such as its type and maintenance frequency.
It also depends on the maintenance procedure and its frequency.
If you maintain your stainless-steel check valve properly, you will get service for a long.
However, an ideal stainless-steel check valve should last at least 3-5 years before replacement.
A stainless-steel check valve can fail due to different factors, including:
For you to understand if your stainless-steel check valve is failing, you have to check on the following symptoms:
These signs are indications that you need to replace your stainless-steel check valve if you want quality performance.
A stainless-steel check valve has a higher lifespan if you manage it properly.
This carrying out the maintenance process and cleaning the check valve regularly.
However, you can replace these check valves after 3-5 years.
The process of replacing a stainless-steel check valve involves having the correct size, type, and design as that of your existing one.
It would help if you were specific when searching for the replacement to minimize the chances of malfunctioning or leakages.
Before replacing your stainless-steel check valve, you have to check on the safety of your application and yours.
Start by switching off the application to minimize the chances of backflow and water hammer effects.
It also prevents contamination of the fluid by ensuring only the treated fluid passes through the valve.
Due to the nature of its content, you have to ensure you are operating in an open area.
This is because the fluid may spill during this process which can spoil valuable items in the surrounding.
You can now proceed to remove the old stainless-steel check valve
Once you have removed the old check valve, you have to clean the application to remove contaminants and make the installation easier.
You can now go ahead and fix the new stainless-steel check valve.
Ensure the inlet and the outlet are in the correct position before tightening.
The following process involves testing to see if there are any leakages.
Lack of leaking means your stainless-check valve is ready for use.
When considering the cost of replacement and repair for your stainless-steel check valve, you have to consider several factors.
For instance, you have to check on the type of maintenance or repair you want for your check valve.
Repair may involve purchasing different spare parts, which can be costly.
High-cost spare parts increase the overall repair cost.
Another factor for consideration is the frequency of carrying out the maintenance process.
Routine maintenance procedure gives quality performance to your check valve but increases the overall cost.
However, routine maintenance procedure reduces the overall cost of repair.
Understanding the overall cost can help you determine if you will purchase a new stainless-steel check valve or carry out a repair.
When the cost and the frequency of repair are high, it can e an indicator that you need to purchase a new stainless-steel check valve.
Given the delicate nature of check valves, there is a need to hire a professional to do the maintenance or repair for you.
Yes, it is possible to close a stainless-steel check valve, depending on the design.
The general procedure of closing this valve involves the backpressure pushing the diaphragm, disc, or ball against its orifice.
This results in the sealing of the check valve.
The man limitations you experience when using a stainless-steel check valve are:
Wafer stainless steel check valve
Stainlesssteel check valves are relatively pricey.
This makes them out of reach for people who cannot afford it, making them operate their application minus them.
However, such an operation often causes grave problems which can affect the quality of your application&#;s performance.
Most stainless-steel check valves have an operating pressure that you should not surpass during operation.
However, in applications with irregular pressure flow, such check valves can damage due to backflow and water hammer effects.
The regular maintenance procedures on these check valves can be tiresome, time-consuming, and require professionals.
Lack of professionals means you may carry out the maintenance wrongly, leading to damage to the check valve.
Before purchasing these check valves, always enquire with your manufacturer if they offer maintenance or repair.
This helps in getting qualified personnel to work on your check valves.
Cracking pressure is a measure of the minimum upstream pressure necessary for the opening of the check valve.
The opening should allow for a noticeable liquid flow which is small but steady.
Cracking pressure is usually either in bar or in pounds per square inch (psig).
It is important to note a difference in the flow rate when your valve is fully open and at a detectable flow.
When choosing the cracking pressure of your stainless-steel check valve, you have to consider the type of fluid and application size.
The fluid type involves checking on the viscosity of the fluid and the fluid nature.
The different types of stainless-steel check valves have different sizes and are suitable for various applications.
The different sizes have varying cracking pressure that you have to consider.
A bubble-tight shutoff is what defines a stainless steel check valve&#;s sealing ability.
You can determine this by carrying out various tests like backflow air pressure tests.
A stainless-steel check valve that is bubble-tight seal should not have any leakage around it when testing it.
Bubble tight seal facilitates the sizing and selection of your stainless-steel check valve.
Yes. a stainless-steel check valve is the same as a stainless-steel non-return valve.
This is because they have the same function of allowing for the unidirectional fluid flow.
The common feature of these valves is the presence of two valves: the inlet and outlet that facilitate the fluid flow.
Outside taps, in most cases, have an inbuilt stainless-steel check valve.
This means you dint require another external check valve
However, damage to the internal check valve can necessitate the need for an external one.
The primary alternative material for a stainless-steel check valve is carbon steel.
This is due to the unique characteristics that carbon0-steel has, which is similar to stainless steel.
For instance, it is relatively cheaper to purchase and machine.
This translates to the lower purchasing power of the corresponding check valve.
However, the limitation of this material is it has a lower corrosion resistance effect.
You, therefore, have to replace the check valve frequently compared to a stainless-steel check valve.
The use of carbon stainless steel is ideal in hydraulic liquid or dry gas piping systems.
Such an application enhances its lifespan while offering the necessary service.
Brass is another material that you can use instead of stainless steel.
It has a lower corrosion resistance than both stainless steel and carbon steel.
The lower price of this material translates to a lower price in the pricing of the check valve.
However, it has a higher replacement cost since it is not as durable as either of the two materials.
This type of check valve you can use on water applications.
You have to consider several factors before determining which material to use in fabricating your check valve.
For instance, you have to consider the type of application, the nature of the fluid, and the overall costs.
The nature of the fluid can either be liquid or gas.
The liquid element can either be salty or fresh liquid.
Salty liquids tend to cause corrosion faster; hence stainless-steel material is ideal in such situations.
The type of application helps in determining the durability of the material.
Stainless steel is generally more vital compared to other materials.
Using this material reduces the overall replacement costs and ensures the productivity of your application.
The cleaning procedure of a stainless-steel check valve involves carefully removing it from the position and cleaning it.
Removing helps in cleaning the outer and inner parts of both your application and the check valve.
Clean as per the direction of your manufacturer by removing all the contaminants. One of the available cleaning methods is backwashing.
The sizing of a stainless-steel check valve mainly involves measuring the diameter of your application.
Your manufacturer then checks for the correct size for you.
The different types of ancillary equipment available for your stainless-steel check valve facilitate its operation.
The choice of which one to you depends on your valve&#;s specific requirements.
One of the standard ancillary equipment available is hydraulic dampers.
The function of this equipment is to help in cushioning the door valve during its sitting positioning.
A proper working stainless-steel check valve should adhere to the following quality and safety standards:
Depending on your unique requirements and specifications, Kinvalve offers the best stainless steel check valves.
Contact us today for all your stainless steel check valve needs.
Swing Flanged Check Valves
A basic swing Check valve consists of a valve body, a bonnet, and a disk that is connected to a hinge. The disk swings away from the valve-seat to allow flow in the forward direction, and returns to valve-seat when the upstream flow is stopped, to prevent backflow.
The disc in a swing type Check valve is unguided as it fully opens or closes. There are many disk and seat designs available, in order to meet the requirements of different applications. The valve allows full, unobstructed flow and automatically closes as pressure decreases. These valves are fully closed when flow reaches zero, in order to prevent backflow. Turbulence and pressure drop in the valve are very low.
Lifting Flanged Check Valves
Lift Check valves are particularly suitable for high-pressure service where velocity of flow is high. In lift Check valves, the disc is precisely guided and fits perfectly into the dashpot. Lift Check valves are suitable for installation in horizontal or vertical pipe-lines with upward flow.
Dual plate wafer check valves
Dual Plate Wafer Check Valves were originally introduced in the late s and quickly became the check valves of choice for many piping engineers because of their proven reliability and low-pressure drops. They have become the standard for process and project engineers worldwide and are used extensively in Power Plants, Refineries, Chemical Plants, Wastewater Treatment Plants and Pulp & Paper Mills.
Nozzle Check Valves
Nozzle check valves are incredibly useful for water pipelines and systems. These valves are engineered to control and protect against pressure surges that can occur in water lines. They also work to prevent water hammer and reverse flow.
Nozzle check valves are constructed with a spring-assisted disc. When fluid pressure in the valve is higher than the cracking pressure, or the pressure needed to open or close the valve, the spring lowers the disc to prevent reverse flow.
The valve is also manufactured to include a guide to keep the disc moving in a vertical. This allows it to re-seat properly.
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