Home
About Us
Products
Contact Us

Non Return Valves

Exceed is known as the leading valve brand in Non Return Valve. We manufacture all kinds of Industrial Valves like Globe Valve, Gate Valve, Swing Check Valves, Strainers, Ball Valves, Safety Valves and NRV's.

In a lift check NRV, a disc known as a lift operates to allow/block the flow. When the inlet pressure is high, the disc is lifted and the flow is allowed. When the pressure drops gravity force or outlet pressure lowers the disc and the flow is stopped. Normally used for high-pressure service..
No. Part Name Quantity Materials
1 Body 1 IS 210 Gr. 220

ASTM A216 Gr. WCB

ASTM A 351 Gr. CF8/CF8M/CN7M
2 Seat 1 C.S 13% Crom./304/316/A20
3 Valve Disc. 1 S.S 13% Crom./304/316/A20)
4 Cover 1 IS 210 Gr. 220

ASTM A216 Gr. WCB

ASTM A 351 Gr. CF8/CF8M/CN7M
5 Stud/Nut Reg. ASTM A 193 Gr. B7

ASTM A 194 Gr. 2H/M.S.
Primary Service Rating and Temprature
ND 16 16 Kg/cm2 220C
ND 40 40 Kg/cm2 400C
Hydraulic Test Pressure
Class Body Seat Air
ND 16 32 Kg/cm2 16 Kg/cm2 7 Kg/cm2
ND 40 80 Kg/cm2 40 Kg/cm2 7 Kg/cm2
Non Return Valves (in mm)
Size Nb. A B C D E
15 130 16 45 95 65
20 150 18 58 105 75
25 160 18 68 115 85
40 200 18 88 150 110
50 230 20 102 165 125
65 290 22 122 185 145
80 310 24 138 200 160
100 350 24 162 235 190
125 400 26 188 270 220
150 480 28 218 300 250
200 600 34 285 375 320