104 Series High Capacity Potable Water Pressure Relief Valve

Disclaimer: All images are for illustrative purposes only.

Discharges water off the system at a set pressure in the event of cold water over pressurisation to a unvented cylinder (high flow for larger capacity systems)

Reliance Valves 104 Series High Capacity Potable Water Pressure Relief Valve is a high capacity range of pressure relief valves designed to protect an unvented system from over pressurisation. The valves are pre-set and locked to a particular pressure, and if the system exceeds this pressure the valve will lift off the seat and water will discharge from the valve to the waste.

The outlet connection is one size larger than the inlet to guarantee the valve will be able to cope with a high capacity discharge. This is the first safety device in line within an unvented system. The valves are available in different pressures ranging from 3.5 - 8 bar, as well as multiple connection sizes to allow for flexible installation.

Features and benefits

  • High flow design for larger capacity systems
  • Rapid removal of single piece cartridge for cleaning or replacement
  • Diaphragm design gives improved resistance against scale
  • Protects against over pressurisation
  • Multiple connections for flexible installation
  • Set relief pressure range from 3.5-8.0 bar
  • Suitable for cold water use only

Accreditations

WRAS approved product
SKUDescriptionModelBSP Inlet Size ″BSP Outlet Size ″Accreditations
PREL104001104 Series 1″ MBSP × 1 1⁄4″ FBSP 5 Bar Pressure Relief ValveFemale Connections Pre-set at 5 Bar11 1⁄4
WRAS
PREL104002104 Series 1″ MBSP × 1 1⁄4″ FBSP 6 Bar Pressure Relief ValveFemale Connections Pre-set at 6 Bar11 1⁄4
WRAS
PREL104005104 Series 1 1⁄4″ MBSP × 1 1⁄2″ FBSP 6 Bar Pressure Relief ValveFemale Connections Pre-set at 6 Bar1 1⁄41 1⁄2
WRAS
PREL104006104 Series 1⁄2″ FBSP × 3⁄4″ FBSP 8 Bar Pressure Relief ValveFemale Connections Pre-set at 8 Bar1⁄23⁄4
WRAS
PREL104008104 Series 1⁄2″ FBSP × 3⁄4″ FBSP 6 Bar Pressure Relief ValveFemale Connections Pre-set at 6 Bar1⁄23⁄4
WRAS
PREL104010104 Series 3⁄4″ FBSP × 1″ FBSP 6 Bar Pressure Relief ValveFemale Connections Pre-set at 6 Bar3⁄41
WRAS
PREL104012104 Series 1 1⁄2″ FBSP × 2″ FBSP 6 Bar Pressure Relief ValveFemale Connections Pre-set at 6 Bar1 1⁄22
WRAS
PREL104013104 Series 1 1⁄4″ FBSP × 1 1⁄2″ FBSP 8 Bar Pressure Relief ValveFemale Connections Pre-set at 8 Bar1 1⁄41 1⁄2
WRAS
PREL104014104 Series 3⁄4″ FBSP × 1″ FBSP 5 Bar Pressure Relief ValveFemale Connections Pre-set at 5 Bar3⁄41
WRAS
PREL104015104 Series 2″ FBSP × 2 1⁄2″ FBSP 6 Bar Pressure Relief ValveFemale Connections Pre-set at 6 Bar22 1⁄2
WRAS
PREL104016104 Series 3⁄4″ FBSP × 1″ FBSP 8 Bar Pressure Relief ValveFemale Connections Pre-set at 8 Bar3⁄41
WRAS
PREL104017104 Series 1″ FBSP × 1 1⁄4″ FBSP 8 Bar Pressure Relief ValveFemale Connections Pre-set at 8 Bar11 1⁄4
WRAS
PREL104020104 Series 1 1⁄2″ FBSP × 2″ FBSP 8 Bar Pressure Relief ValveFemale Connections Pre-set at 8 Bar1 1⁄22
WRAS
PREL104023104 Series 2″ FBSP × 2 1⁄2″ FBSP 8 Bar Pressure Relief ValveFemale Connections Pre-set at 8 Bar22 1⁄2
WRAS
PREL104040104 Series 1⁄2″ FBSP × 3⁄4″ FBSP 3.5 Bar Pressure Relief ValveFemale Connections Pre-set at 3.5 Bar1⁄23⁄4
WRAS
PREL104041104 Series 1⁄2″ FBSP × 3⁄4″ FBSP 5 Bar Pressure Relief ValveFemale Connections Pre-set at 5 Bar1⁄23⁄4
WRAS
PREL104042104 Series 3⁄4″ FBSP × 1″ FBSP 3.5 Bar Pressure Relief ValveFemale Connections Pre-set at 3.5 Bar3⁄41
WRAS
PREL104043104 Series 1″ FBSP × 1 1⁄4″ FBSP 3.5 Bar Pressure Relief ValveFemale Connections Pre-set at 3.5 Bar11 1⁄4
WRAS
PREL104044104 Series 1 1⁄4″ FBSP × 1 1⁄2″ FBSP 3.5 Bar Pressure Relief ValveFemale Connections Pre-set at 3.5 Bar1 1⁄41 1⁄2
WRAS
PREL104045104 Series 1 1⁄4″ FBSP × 1 1⁄2″ FBSP 5 Bar Pressure Relief ValveFemale Connections Pre-set at 5 Bar1 1⁄41 1⁄2
WRAS
PREL104046104 Series 1 1⁄2″ FBSP × 2″ FBSP 3.5 Bar Pressure Relief ValveFemale Connections Pre-set at 3.5 Bar1 1⁄22
WRAS
PREL104047104 Series 1 1⁄2″ FBSP × 2″ FBSP 5 Bar Pressure Relief ValveFemale Connections Pre-set at 5 Bar1 1⁄22
WRAS
PREL104048104 Series 2″ FBSP × 2 1⁄2″ FBSP 3.5 Bar Pressure Relief ValveFemale Connections Pre-set at 3.5 Bar22 1⁄2
WRAS
PREL104049104 Series 2″ FBSP × 2 1⁄2″ FBSP 5 Bar Pressure Relief ValveFemale Connections Pre-set at 5 Bar22 1⁄2
WRAS