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Wafer Check Valves



Wafer Check Valves
Wafer Check Valves

P. S. wafer design Check Valves (NRV) are especially designed for low Pressure Applications, where min pressure drop is desired
SIZE RANGE MM : 40 - 600. Larger sizes up to 1000 mm on request.
APPLICATIONS : Largely used in Sugar, Distilleries; Cement; All chemical & Petrochemical Industries, Thermal power stations, Air conditioning & Oil, Air, Gas & Water, plants, Fire protection systems.


Material Of Construction Body & Disc

Graded Cast Iron, S. G. I. Iron, Cast Steel WCB Grade Complete Stainless Steel; AISI 304, 316, & Low Carbon Steels


Disc & Body Sealing Rings

EPDM; Nitrile; Neoprene, Silicon; Viton & PTFE Valves can also be provided with Telfon rubber lining. Replaceable 'O'ring placed in dove tail groove of disc & Body.


Installation

Suitable for mounting between various flange Stds. ASA 150-300, DIN & IS Stds. When installing a check Valve on the delivery side, do not assemble it directly on to the pump flange or on to a following bend or elbow. The valve may be fitted at a distance of 7 to 10 times the nominal width, from the beginning of the stabilised distance.


Features

• High Cv Values.
• High Resistance.
• Minimum Pressure Loss.
• Light weight.
• Reduced space just 6% as that of conventional valve. (Advantages over conventional check Valves)


Test Pressure

6-100 kg/cm2


Temperature

Minus 60 deg. C. to plus 400 deg. C.


Mounting

Suitable for Vertical & Horizontal


General Dimensions Of Check Valves STD. Model


Size A B C WT. KG. Opening PR.
mm            
40 22 96 16 1.5 40 45
50 26 100 16 1.7 41 48
65 38 130 16 2.5 56 50
80 48 145 16 3 62 50
100 73 165 16 3.5 80 60
125 96 195 18 5 103 63
150 116 219 21 7 121 80
200 142 274 31 13 155 90
250 190 329 31 17 203 135
300 218 379 40 29 230 155
350 265 440 42 45 271 160
400 306 491 53 65 310 170
450 358 539 53 80 362 185
500 408 594 63 120 401 -
600 485 697 72 180 481 -