11/2020
Errors and omissions excepted Plastic valves L7 – 9
DN d4e1
15 8,8 50
20
25 8,8 30
32
40 8,8 50
50
Pressure relief valve type V 85 and type V 185
Dimensions and weights
Dimensions in mm Weight in kg / pc.
DN d D h h2H L
3) z
4) Lf5) L6) z 7) Lf5) Ls8)
15 20 83 20 - 137 134 160 140 158 184 168 272 0,5 0,4 0,7
20 25 83 20 - 137 134 160 140 158 184 168 278 0,5 0,4 0,7
25 32 112 27 - 199 174 200 180 198 224 210 324 1,3 0,9 1,7
32 40 165 43 - 199 174 204 180 202 232 210 334 1,3 0,9 1,7
40 50 165 43 - 290 224 258 230 256 291 266 397 6,5 4,5 8,1
50 63 165 43 - 290 244 286 250 256 298 266 380 6,6 4,6 8,3
65 75 180 45 70 275 284 - 290 284 - 296 - 8,2 6,3 14,8
80 90 200 90 95 410 300 - 310 300 - 310 - 12,8 9,5 16,2
100 110 250 70 110 485 380 - 390 380 - 390 - 22,7 19,9 33,8
3) Cement spigot 4) Union with cement socket 5) Flange 6) Welding spigot (IR or butt) 7) True union with welding socket
Dimensions and weights
for other connections
see L7 – 44
No. Description Number Material
6 Spring plate 1 Aluminum alloy
7 Adjustment screw / nut 1 A2 - 1.4301 (SUS 304)
8 Cap 1 PVC, PP
9 Screw set 1 A2 - 1.4301 (SUS 304)
10 Piston complete *,1) 1 PVC-U, PP, PVDF
1) only DN 65 – DN 100
*) Wearing parts / recommended spare parts
Functionality
By a preloaded spring with a compression piece the prefor-
med diaphragm (V 186) or the piston (V 86) is pressed against
the sealing seat of the overflow outlet. In the initial state the
overflow outlet is closed, there is no through flow. Exceeds
the system pressure acting on the diaphragm the value of the
set spring force, the overflow outlet becomes released and
the medium can drain off.
Description
Pressure relief valves V 85 and V 185 protect systems and
piping systems against overpressure and pressure peaks.
The third pipe socket (overflow outlet) integrated in the
valve body allows installation directly into the main pipe.
Flow-optimized design of the lower part results in only
a small pressure loss in the passage.
Special features
Good control characteristic
Installation independent of position
Overflow outlet directly on the valve
Type V 185 additionally:
Low maintenance due to simple construction
Entire actuator mechanism hermetically sealed from the
medium by diaphragm
Nearly dead space free body
Integrated support for plate and rail mounting
Working pressure pBin bar
Body material TB[°C]
pB[bar]
DN 10 – 50 DN 65 – 80 DN 100
PVC-U
0 up to 25 10 6 4
40 6 6 4
60 1 1 1
– 10 up to 30 10 6 4
40 7 6 4
60 4,3 3,5 2,4
80 1,7 1,3 1
– 20 up to 40 10 6 4
60 7,5 4,6 3
80 5,3 3,3 2
100 2 1 0,5
Connection for attachment
DN 15 – DN 50 (type V 185)
Ø d4x 2
e1
No. Description Number Material
1 Base plate 1 PVC-U, PP, PVDF
2 Bonnet 1 PVC-U, PP, PVDF
3 Diaphragm
*) 1 PTFE, EPDM
4 Thrust piece 1 PP
5 Pressure spring*) 1 Spring steel
PP
PVDF
PVC-U PP PVDF
PVC-U PP / PVDF
8) True union with welding spigot - For the installation length of the 3rd spigot, divide the dimensions L, Lf, Ls, z by 2 -
