vertical check valve

Spring vertical non-return valve

Check valves are widely used in pipelines under various working conditions in the petroleum, chemical, pharmaceutical, and power industries. The spring vertical check valve is normally closed. Due to the pressure of the medium at the inlet end of the pipeline, it overcomes the spring resistance to open the valve. 

When the medium pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core to the valve seat to close the valve, preventing the medium from flowing back, so it acts as a check. Since the check valve adopts a spring to support the spool, it can be installed vertically or horizontally.

Steel vertical check valves with spring：

Description of Stainless steel check valve

Size: 1/4"-20"
Material: SS304, SS304L, SS316, SS316L
Certification: ISO, CE, CCC, SGS
Connection type: Threaded, Flanged, Butt welding, Socket welding, Clamp
Fields of applications: Water, Oil, Gas
Working Pressure: Class150/600LB
Working Temperature: 0℃,+300℃
Performance: Shock-proof,wacter-proof, Antistatic available.
Guarantee time: 1 year
MOQ: 20 pieces
Sample: According to whether there is in stock and the type of goods
Packaging: Standard export package or Customized
Payment: T/T, L/C,D/P,Western Union
Delivery: Ningbo port, Shanghai port, Wenzhou port, within 30 days after payment.

Packing: PVC bag, Carton, Plywood Case or Pallet

FAQ：

Q: who are we?
A: We are based in Zhejiang, China, start from 2012,sell to Mid East(22.00%),South America(18.00%),
    Central America(10.00%),Western Europe(10.00%),Eastern Europe(10.00%),Southeast Asia(8.00%),
    North America(8.00%),Oceania(8.00%),Africa(6.00%). There are total about 51-100 people in our office.

Q: How can we guarantee quality?
A: Always a pre-production sample before mass production;
     Always final Inspection before shipment;

Q: How about payment terms? 
A: 30% TT deposit + 70% TT before shipment,50% TT deposit + 50% LC balance, Flexible payment can be negotiated. 

Q: Installation and commissioning? 
A: We will send our engineer for installation and commissioning, but relevant cost will be paid by you. 

Q: What can you buy from us?
A: Valves,pipe fittings,elbow,flanges,ball valve

Q: Our advantage?
A: Zhitong pipeline industry is a factory specialized in stainless steel pipe fittings and valves. Our company has acquired ISO 9001:2008 and  CE authentication. We always places the product quality and customers' needs on the utmost position.