A check valve is a one-way protector in fluid systems, automatically opening/closing via medium pressure to prevent back-flow and protect equipment. Available in lift, swing, and butterfly types, it suits diverse scenarios.

Product Parameters

Item	Specifications
Types	Lift check valve, Swing check valve, Butterfly check valve, Silent check valve
Body Material	Cast steel (WCB), Stainless steel (304, 316, 316L), Ductile iron, Brass, Forged steel
Pressure Rating	PN10, PN16, PN25, PN40, PN64, Class 150, Class 300, Class 600, 1.6MPa – 42.0MPa
Nominal Diameter	DN15 – DN1200 (1/2" – 48")
Connection	Flanged, Butt-welded, Socket-welded, Threaded (NPT/BSP)
Working Temperature	-20℃ to 550℃
Sealing Material	EPDM, PTFE, Viton, NBR, Metal hard seal
Core Function	Prevent media backflow, Stabilize pipeline pressure, Eliminate water hammer
Applicable Media	Water, oil, gas, steam, corrosive fluid, chemical medium
Design Standard	API 6D, GB/T 12236, BS 5155

Product Advantages

Auto Protection: Operates without manual control, prevents pump idling and water hammer.
Flexible Types: Lift (simple), Swing (low-resistance for large diameters), Butterfly (compact).
Stable Pressure: Maintains system pressure in multi-pump setups.
Strong Adaptability: Multiple materials for low to high pressure and corrosive media.
Low Energy Consumption: Minimal pressure loss reduces energy waste in fluid systems.
Quiet Operation: Smooth valve movement minimizes vibration and noise, ideal for noise-sensitive environments.