Vertical Check Valve

1.What is a vertical check valve

Vertical check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.

2.The specification of the vertical check valve

3.How does a check valve work

A check valve requires a minimum upstream pressure (pressure differential between inlet and outlet) to open the valve and allow flow through it. This minimum upstream pressure at which the valve opening occurs is called the check valve ‘cracking pressure’. The specific cracking pressure changes based on the valve design and size, so ensure that your system can generate this cracking pressure and that it is suitable for the application.
If the upstream pressure ever falls below the cracking pressure or there is a back pressure (flow attempting to move from the outlet to the inlet), then the valve will close. Depending on the check valve design, the closing mechanism can change. In short, the back pressure pushes a gate, ball, diaphragm, or disc against the orifice and seals it. Depending on the design the closing process can be assisted by a spring or gravity.

4.FAQ

Ⅰ.Can I have a sample order for valve
A: Yes, we welcome sample order to test and check the quality, mixed samples are accepted.
Ⅱ.Do you have any MOQ limit for valve order
A: Low MOQ, 1 PC for sample checking is available.
Ⅲ.Could you offer OEM service
A: Yes, OEM is available.
Ⅳ.How about the payment
A: We normally accept 30% deposit, and balance will be paid before Shipping. L/C is acceptable.
Ⅴ.What is the warranty of your product
A: We normally offer 12 months of warranty in service or 18 months since shipping date.

6.About Milestone Valve 

7.Welcome to Contact Us

Welcome to vist our website about more valve, and please feel free to contact us if you have any questions.
Sale manager: Karen Zhan
Email: Karen@milestonevalve.com