Reflux non return valve

STANDARD SPECIFICATION

Size Range

50mm to 700mm (Single door type) –Upto 600mm ISI Marked

500mm to 1500 (Multi–door type)

Mfg/ Design Std.

IS 5312 (Pt-I)/BS 5153 & G&K Catalogue

Type of Valve

Swing Check type

Pressure Rating

PN 1.0/ PN 1.6/ Class-125

Flanged End

IS:1538 (Tab-4&6), On Request – BS/ANSI/AWWA/DIN/BSEN

Body & Other C.I Parts

C.I to IS: 210 Gr. FG-200/260 or BS 1452 or ASTM A126

Seat ring

L.T.B to IS:318 Gr.2/ S.S./ IS: 6603 or AISI-304/316

Hinge Pin

S.S to IS: 6603/AISI-410/304/316 or Brass

Optional disc matl.

C.S./S.S./Brass

Optional disc Seal

Natural/Synthetic/EPDM/Neoprene rubber

Additional Accessories

By- Pass, Lever with spring/dashpot/Counter weight/Air Plug

Special Features

• Full flow area, Heavy duty valve, Low head loss
• Face to face dimension available in ANSI B 16.10/AWWA C508 (Single Door)
• Resilient Seat or metal to metal
• Rubber lining available (only for single door valve)
• Uni-directional and self acting fluid operation
• Mounted in the horizontal/vertical position
• Multi-door valve highly sophisticated with slam resistance properties
• Multi-door valve used for high branch velocities
• Available in Cast steel & Ductile Iron