Worcester Safety Valve 87186439890
Worcester Bosch 87186439890
Suitable for Worcester Bosch Greenstar ErP, Compact and Greenstar boilers.
533
and 535
with HIU
plus HIU E WITH HM
fits 27 i System
and 28 CDi Compact
with 30 i System
plus 30 Si Compact LPG
fits 32 CDi Compact
and 32CDi Compact LPG
with 36 CDi Compact
plus 36 CDi Compact LPG
fits Heatslave II 12/18
and Heatslave II 18/25 External
with Heatslave II 25/32
plus Heatslave II 25/32 External
fits 533 ErP
and 535 ErP
with H
The relief valve helps to control pressure in a closed system by proportionally opening to relieve excess pressure, preventing catastrophic malfunction
