Product Details
Reliance Water Controls - RWC - SYR 1915.20.018 PREL 100 014 1915 Series 3/4" FBSP x 1" FBSP Set At 3 Bar High Capacity Heating Pressure Relief Expansion Valve
Operating Temperature: 140 C max.
Test Pressure of Body: 25 bar
Reliance Water Controls part no. 520-468-0904
http://www.advancedwater.co.uk/STOMEMO/A520-468-0904/RWC%20Prel%20100%20Series%20Spec%20Sheet.pdf
3/4" Female Inlet
1" Female Outlet
Seat and locked at 3.0 Bar
A high capacity pressure relief valve to protect closed-circuit water heating systems from overpressure.
Product Features and Benefits
• The outlet is one size larger than the inlet, for high capacity discharge.
• Gives overpressure protection for wet heating systems.
• Diaphragm design gives improved resistance to scaling.
• Cartridge design gives ease of service and replacement without the need to re-set the response pressure.
• Set pressure range from 2.5 bar to 5.0 bar to suit any system requirement.
• High lift design for increased discharge capacity.
• Available with a variety of BSP and compression connection combinations for complete installation flexibility.
WRAS approved
Description
Made from hot pressed brass, the Pressure Relief Valve is predominantly used to protect closed-circuit wet heating
systems from overpressure. The outlet is one size larger than the inlet to ensure high discharge flow rates. It has a
separate seal seating from the diaphragm with a cover which is made from OT58 brass. Available in a variety of
sizes to suit most installations, it also has a pressure range from 2.5 bar to 5.0 bar with the response pressure indicated
on the twist cap. The valve size is determined by the heat output of the boiler as shown in the maximum heating
capacity table.
PREL 100 014: 3/4'' x 1'' FF Relief Valve - 3.0 bar
Materials
Body: Hot pressed DZR brass
Diaphragm: EPDM Elastomer
Seal: EPDM Elastomer
Spring: Spring steel wire - corrosion protected
Internals: OT58 brass
Cap: High grade glass fibre reinforced plastic
Dimensions
Maximum Heating Capacity
Pressure Setting (bar): 3.0
Maximum Heating Capacity (kW): 112
Specifications
Set Pressure Range: 2.5 bar to 5.0 bar
Operating Temperature: 140¼C max.
Test Pressure of Body: 25 bar
Approvals
WRAS Approval Number: 0007068
How to Specify
A high capacity (outlet one size larger than the inlet) heating system pressure relief valve, manufactured from hot
pressed DZR brass. Twist top cartridge style construction and pressure indicated on cap (include correct product
range code).
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