Non-Slam Chek Valve
Axial Flow Non-Slam Check Valve /Axial Flow Silent Check Valve
IO Valves Silent Type Check Valves operate as non-return valves, allowing smooth, uninterrupted flow in the forward direction with minimal head loss. In the event of pump stoppage or reverse flow, the spring-assisted disc closes instantly to provide non-slam operation. The disc is guided by a shaft supported on dual bearings, and the stainless-steel weld-overlay body seat ensures dependable sealing. The compact globe-style body allows easy installation in restricted pump house layouts commonly found in water infrastructure projects.
Size Range: DN 50 – 1000 Pressure Rating: PN 10|16|25|40
Material of Construction
Body : Ductile Iron
Cylinder : SS 304/SS 316
Disc : SS 304/SS 316
Hinge : SS 304/SS 316
Body & Disc Sealing : SS 304/SS 316
Stem : SS 304/SS 316
Stem Nut : Bronze
Sealing Gasket : EPDM (Food Grade)
Cylinder O Ring : EPDM (Food Grade)
O Ring’s : NBR
Coating : Epoxy Powder Coating with Min.250µ
Flange Drilling : EN1092-2
Medium : Water
Operating Temperature : -10°C to +80°C
Robust construction with dual-bearing shaft support for long service life
Compact globe-pattern body ideal for pump house installations
Silent check valves are engineered for rapid, non-slam closure.
The spring-assisted disc and short travel stroke enable an immediate response to flow reversal, effectively reducing water hammer and ensuring smooth operation.
The full-bore flow path allows unobstructed passage across the entire pipeline diameter when the valve is open, resulting in minimal pressure loss.
These valves are well suited for applications with high flow velocities, maintaining stable and reliable performance under demanding operating conditions.
Suitable for horizontal and vertical installation in water pipelines
Features
Typical Applications
Individual Pumping mains
On Rising Mains after the Manifold
Irrigation networks
Municipal water distribution system