Silent Check Valves

Tooflow brings this latest technology for the first time in India. Silent Check Valves are a short length double flanged valves with all the internals designed Hydrodynamically. This valves, when open, the annular area between the body & plunger available for flow, is equal to the nominal bore area. Therefore, unlike other spring loaded valves & conventional flapcheck valves, these valves offer lower head losses & maintains laminar flow. As the valve closes, due to return spring force, valve is “Quick Closing”. The valve gets closed before the start of back flow / return velocity. Hence, water hammer is eliminated in most of the cases.

Features

  • Working principal Hydrodynamic guided closing.
  • The closing mechanism is guided & backed with return spring for quick closing, Opening and perfect sealing.
  • Due to Aero/hydro dynamic effect water hammer is eliminated.
  • Very low pressure loss
  • Most suitable for clear liquids & air.
  • Silent operation.

Material Specification

Description Standard Material On Request
BODY/GUIDE CAST IRON (GG25)
PLUNGER S.G. IRON
SPRING STAINLESS STEEL
SEAT RING L T BRONZE
Paint ENAMEL PAINT
End Connection Flanged
Size Range 40mm TO 400mm
Pressure Testing Body: 1.5 × PN
Seat: 1.1 × PN
PRESSURE RATING - KPa 40mm TO 125mm : PN 1.6
150mm TO 300mm : PN 1.0
350mm & 400mm : PN 0.6
Installation Horizontal as well as Vertical
Temperature Suitable up to 80°C
Dimensions (A = size in mm)
A 40 50 65 80 100 150 200 250 300 350 400
D 150 165 185 200 220 285 340 406 457 527 578
W 85 105 128 156 194 264 346 430 500 600 686
H 85 100 120 140 170 230 290 355 398 475 560
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