316 Stainless Steel duo check valve. Stainless Steel spring loaded gates, 316SS disc, FKM seat and PTFE washer. Wafer design to suit ANSI 150 Flanges. These Duo Check Valves are easy to install and maintain and provide great in line back flow prevention in a wide range of applications. Face to face according to DIN3202-K3 / EN558-1. Suits ANS 150/300 & DIN PN10/16/25/40 flange standards.

Model Size (mm) Orifice (mm) Media Pressure Media Temperature
DCVS-50 50 48 0 to 40 BAR 0°C to 180°C
DCVS-65 65 59 0 to 40 BAR 0°C to 180°C
DCVS-80 80 72 0 to 40 BAR 0°C to 180°C
DCVS-100 100 90 0 to 40 BAR 0°C to 180°C
DCVS-125 125 110 0 to 40 BAR 0°C to 180°C
DCVS-158 150 135 0 to 40 BAR 0°C to 180°C
DCVS-200 200 175 0 to 40 BAR 0°C to 180°C
DCVS-250 250 222 0 to 40 BAR 0°C to 180°C
DCVS-300 300 264 0 to 40 BAR 0°C to 180°C

Stainless Steel Duo Check Valve Pressure vs Temperature 

Stainless Steel Wafer Duo Check Valve Dimensions

Size d D D1 L Weight (kg)
50mm 48 101 65 43 1
65mm 59 120 80 46 1.42
80mm 72 133 94 64 2.32
100mm 90 162 117 64 3.26
125mm 110 192 145 70 5.08
150mm 135 218 170 76 7.02
200mm 175 273 224 89 11.76
250mm 222 328 265 114 19.9
300mm 264 378 310 114 27.6

All dimensions in mm unless otherwise shown. 

Stainless Steel Duo Check Valve Construction

Item Part Part Material QTY
1 Body CF8M 1
2 Disc CF8M 2
3 Spring SS316 2
4 Axle SS316 1
5 Disc Stopper SS316 1
6 Seat FKM 1
7 Washer PTFE 7
8 Plug SS304 4

Size 50mm to 300mm
Body 316 Stainless Steel
Seat FKM
Disc 316 Stainless Steel
Pressure Range 0 to 40 BAR
Temperature 0 to 180°C

Product History