Cast Iron duo check valve. Stainless Steel spring loaded gates, 316SS disc, EPDM seat and PTFE washer. Wafer design to suit all common flange standards from 50mm to 600mm. These Duo Check Valves are easy to install and maintain and provide great in line back flow prevention in water treatment and general industry applications.

Model Size (mm) Orifice (mm) Media Pressure Media Temperature
DCVC-50 50 40 0 to 16 BAR 0°C to 100°C
DCVC-65 65 60 0 to 16 BAR 0°C to 100°C
DCVC-80 80 70 0 to 16 BAR 0°C to 100°C
DCVC-100 100 88 0 to 16 BAR 0°C to 100°C
DCVC-125 125 115 0 to 16 BAR 0°C to 100°C
DCVC-150 150 134 0 to 16 BAR 0°C to 100°C
DCVC-200 200 182 0 to 16 BAR 0°C to 100°C
DCVC-250 250 220 0 to 16 BAR 0°C to 100°C
DCVC-300 300 260 0 to 16 BAR 0°C to 100°C
DCVC-350 350 298 0 to 16 BAR 0°C to 100°C
DCVC-400 400 350 0 to 16 BAR 0°C to 100°C
DCVC-500 500 385 0 to 16 BAR 0°C to 100°C
DCVC-600 600 438 0 to 16 BAR 0°C to 100°C

Cast Iron Duo Check Valve Dimensions

Size DN L D D1 D2 R t
Table D Table E ANSI 150
2” 50 43 96 96 101 65 40 27 18.4
2 ½” 65 46 109 110 121 80 60 35 19.8
3” 80 64 128 128 134 94 70 42 27.7
4” 100 64 160 156 171 117 88 50 27.7
5” 125 70 192 187 193 145 115 64 30.3
6” 150 76 217 213 219 171 134 77 31.6
8” 200 89 274 267 276 224 182 102.5 32.9
10” 250 114 334 328 336 265 220 125 50.5
12” 300 114 384 375 406 310 260 146 43.3
14” 350 127 444 444 448 360 298 170 45.3
16” 400 140 495 495 511 410 350 195 52.3
18” 450 152 558 558 546 450 385 215 58.2
20” 500 152 615 615 603 505 438 238 58.3
24" 600 178   723   625      

All dimensions in mm unless shown otherwise. 

Cast Iron Duo Check Valve Construction

Number Item Material
1 Body Cast Iron
2 Disc 316 Stainless Steel
3 Stem 316 Stainless Steel
4 Spring 316 Stainless Steel
5 Washer PTFE
6 Washer PTFE
7 O-Ring EPDM
8 Hex Nut 316 Stainless Steel
9 Seat EPDM

Size 50mm to 600mm
Body FBE coated Cast Iron
Seat EPDM
Disc 316 Stainless Steel
Pressure Range 0 to 16 BAR
Temperature 0 to 100°C

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