Diaphragm Control Valve

Diaphragm Control Valve – Specifications

DESIGN Confirm to BS – 5156
BODY TYPE Weir ( Rubber Lined – Series 410 )

( Unlined – Series 430 )

( PFA Lined – Series 440 )

VALVE SIZE 15mm to 300mm ( 1/ 2” to 12” )
END CONNECTION ANSI B 16.1Class 150
BODY MATERIAL Cast Iron ( IS 210 grade FG 200 )

Cast Steel, Other alloys on request.

LINING MATERIAL Ebonite, PVDF, PFA, PP, EPDM,Glass etc.
LINING HARDNESS Ebonite-95° ± 5 Shore A

Natural/Neo Rubber-55° ± 5 Shore A

PTFE-Rockwell/Shore R100 D78 or

D62 Glasslining & FRP-Parcol Parcol 40

Respectively.

LINING THICKNESS 15 to 65 mm Valve – 3.0 mm

80 to 100 mm Valve – 3.5 mm

125 to 150 mm Valve – 4.0 mm

200 to 300 mm Valve – 5.0 mm

PTFE Coating Thickness – 800 micron,

Glass Lining – 1.5mm.

BODY DIAPHRAGM Neoprene, PTFE Backed with Neoprene

Butyl, Viton, Hyplon, Nitrile, EPDM.

LEAKAGE RATE As per ANSI B 16.104 Class VI (100% Leak tight.)
TEMPERATURE - 30°C to 80°C
FLOW CHARACTERISTICS On/Off, Throttling.
TESTING STANDARD BS 6755 Part – I
ACTUATOR TYPE Diaphragm or Motorised or Cylinder
ACTUATOR ACTION Direct Acting – Normally Open ( Air to Close )

Reverse Acting – Normally Close ( Air to Open)

SPRING RANGE 3 – 15 PSIG ( 0.2 – 1.0 Kg/cm² )

8 – 20 PSIG ( 0.4 – 2.0 Kg/cm² )

18 – 30 PSIG ( 1.2 – 2.0 Kg/cm² )

AIR SUPPLY 20-50 PSIG (1.4-3.5 Kg/cm²)
AIR CONNECTION 1/ 4” or 1/ 2” NPT
ACCESSORIES OPTIONAL Top or Side Mounted Handwheel, Limit Switches Airset, Valve Positioner etc.

Diaphragm Control Valve – Design And Performance Features

  • It is a full bore straight through, give high flow performance with minimum turbulence, while giving 100% leak tight closure.
  • Perfect sealing and longer diaphragm life due to weir design.
  • Valve is self cleaning with no pockets, recesses, corners, grooves or sharp edges in the direction of flow.