Stainless Steel Strainer Ss Non Return Valve Socket Weld Check Valve 25 mm to 900 mm Swing Lift CF8m Alloy Bronze Pn16 40 Check Valve Strainer

• Media: Oil, Gas, Water,Acid
• Temperature: Ordinary Temperature
• Material: Stainless Steel
• Connection Form: Flange
• Structure: Swing
• Pressure: Ordinary Pressure
• Model NO.: check valve
• Function: Oil, Gas, Water,Acid
• Sealing Form: Bellows Globe Valve
• Flow Direction: Unidirection
• Standard: ANSI
• Application: Industrial Usage
• Delivery: 15 Days
• Body: CF8m/CF3m/Alloy
• Transport Package: Wooden Case
• Specification: 1"-40"
• Trademark: NAI LOK/OEM
• Origin: China
• Production Capacity: 10000

Product Description

Check valve is a valve referred to the opening and closing parts for the circular disc and by its own weight and medium pressure to block the media flow back. 

It belongs to automatic valve class, also known as check valve, check valve, return valve or isolation valve. Disc movement is divided into lifting type and swing type. Lift check valves are similar in construction to globe valves except for the lack of a stem to drive the disc. The medium flows from the inlet end (the lower side) and flows from the outlet end (the upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the disc and its flow resistance. On the contrary, the valve is closed when the medium flows backwards. Swing check valves have a tilt and can rotate around the axis of the disc, the working principle is similar to the lift type check valve.

Check valves are often used as bottom valves in pumping devices to prevent water from returning. Check valve and globe valve combined use, can play the role of safe isolation. The disadvantage is that the resistance is large, and the sealing is poor when it is closed.

Design	API599, ASME B16.34
Testing	API 598, API6D, EN12266-1
Face to face dimension	ASME B16.10
Ends connection	ASME B16.5, ASME B1.20.1, ASME B16.25
Pressure temperature rating	ASME B16.34
Marking	MSS SP-25
Non-destructive Examination	VT, PT, RT, UT, MT
Options	Full bore reduced bore
Structure Features	Non-lubricated
	Threefold stem seal system
	Zero leakage
	Cavity free design
	360° metal lips design
	Quick turn feature
	Anti-static Design
	Fire-safe
	Replaceable sleeve
	Bi-directional flow
	Double gland seals design
	Trunnion design
	Fugitive emission design
Operation	Handle, Gear, Pneumatic actuators, Hydraulic actuator, Electrical actuator