Range of BOSS 958 combined pre-set temperature and pressure relief valves incorporating Bronze body, DZR brass seat and plunger, EPDM ‘O’-rings, PTFE seal and silicone diaphragm. The valves incorporate a manually operated lever easing gear. The valves are factory pre-set between 0.7 bar and 12.5 bar. Maximum operating temperature 90°C.
Maximum working pressure between 0.7 bar and 12.5 bar.
Maximum operating temperature 90.0°C
- Section:
- 2030 Valves
- Section Subtitle:
- Combined thermal and pressure relief.
- WRAS Approval Number:
- 251102722
- Basis of Compliance:
- Tested to regulators Specification Test Code Sheets
- Size:
- See models
- Marking:
- BOSS, DN, bar pressure, temperature date of manufacture on data label on front of body. Flow arrow on body and CR inlet connection.
- Installation Requirements:
- R001
- Expiry date:
- 30/11/2030
- Model:
-
27641805 - 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.4 TO 0.7 BAR (½” BSP (M) Inlet x (F) outlet)
27641816 - 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.71 TO 4.5 BAR (½” BSP (M) Inlet x (F) outlet)
27641827 - 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 4.51 TO 9.0 BAR (½” BSP (M) Inlet x (F) outlet)
27641838 - 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 9.01 TO 12.5BAR (½” BSP (M) Inlet x (F) outlet)
27641849 - 3/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.4 TO 0.9 BAR (¾” BSP (M) Inlet x (F) outlet)
27641860 - 3/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.91 TO 1.4 BAR (¾” BSP (M) Inlet x (F) outlet)
27641871 - 3/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 1.41 TO 5.7 BAR (¾” BSP (M) Inlet x (F) outlet)
27641882 - 3/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 5.71 TO 8.5 BAR (¾” BSP (M) Inlet x (F) outlet)
27641893 - 3/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 8.51 TO 12.5BAR (¾” BSP (M) Inlet x (F) outlet)
27641923 - 1 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.4 TO 0.9 BAR (1” BSP (M) Inlet x (F) outlet)
27641934 - 1 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.91 TO 4.0 BAR (1” BSP (M) Inlet x (F) outlet)
27641945 - 1 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 4.01 TO 8.3 BAR (1” BSP (M) Inlet x (F) outlet)
27641956 - 1 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 8.31 TO 12.5BAR (1” BSP (M) Inlet x (F) outlet)
27641967 - 1 1/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.4 TO 1.2 BAR (1 ¼” BSP (M) Inlet x (F) outlet)
27641978 - 1 1/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 1.21 TO 4.0BAR (1 ¼” BSP (M) Inlet x (F) outlet)
27641989 - 1 1/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 4.01 TO 8.0BAR (1 ¼” BSP (M) Inlet x (F) outlet)
27642006 - 1 1/4 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 8.01 TO 12.5BA (1 ¼” BSP (M) Inlet x (F) outlet)
27642028 - 1 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.4 TO 1.6 BAR (1 ½” BSP (M) Inlet x (F) outlet)
27642039 - 1 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 1.61 TO 4.0BAR (1 ½” BSP (M) Inlet x (F) outlet)
27642050 - 1 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 4.01 TO 8.0BAR (1 ½” BSP (M) Inlet x (F) outlet)
27642061 - 1 1/2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 8.01 TO 12.5BA (1 ½” BSP (M) Inlet x (F) outlet)
27642242 - 2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.4 TO 0.7 BAR (2” BSP (M) Inlet x (F) outlet)
27642253 - 2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 0.71 TO 1.6 BAR (2” BSP (M) Inlet x (F) outlet)
27642264 - 2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 1.61 TO 3.0 BAR (2” BSP (M) Inlet x (F) outlet)
27642275 - 2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 3.01 TO 5.0 BAR (2” BSP (M) Inlet x (F) outlet)
27642286 - 2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 5.01 TO 8.5 BAR (2” BSP (M) Inlet x (F) outlet)
27642297 - 2 BOSS 958 PRESS/TEMP WRAS BZE RELIEF VVE 8.51 TO 12.5BAR (2” BSP (M) Inlet x (F) outlet)
Product Images
- Approval Holder:
- BSS Industrial
Company Name
BSS Industrial
Address
Travis Perkins PLC
Ryehill House
Rye Hill Cose
Lodge Farm Industrial Estate
Northampton
Postcode
NN5 7UA
Phone
07392109053
General Email
benjamin.cockerill@travisperkins.co.uk
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