KEY FEATURES
• UL / FM approved for fire
extinguishing systems
• Reliable diaphragm actuated
• Hydraulically operated design
• Class 150 and 300 flanges
• Stainless steel fasteners
• Heat fused red epoxy coating
• Available in globe and angle style
106-RPS-8700A Globe
Product Overview
The 106-RPS-8700A pressure relief valve, which is UL / FM labelled and listed, automatically
relieves excess pressure in the fire protection system to discharge. The RPS series valves will also
automatically modulate to relieve excess pump capacity during pump start up and shut down, allowing
the pump to operate without causing surges.
These relief valves are based on the 106-PG or A106-PG main valves and come in complete range of
sizes from 2 1/2 in / 65 mm to 8 in / 200 mm. In typical pressure relief application, the angle style A106RPS-8700A is often the preferred selection.
Technical Pressure Rating
All valves have 150 lb or 300 lb ANSI flanges and grooved ends.
150 lb flanges related inlet pressure: 200 psi / 13.8 bar / 1,380 kpa
300 lb flanges related inlet pressure: 300 psi / 20.7 bar / 2,070 kpa
Grooved ends related inlet pressure: 300 psi / 20.7 bar / 2,070 kp
www.singervalve.com
Fire Protection
Model 106-RPS-8700A
UL / FM Pressure Relief Valve
Fire Protection
Model 106-RPS-8700A
UL / FM Pressure Relief Valve
Schematic Drawing
1. Main Valve - 106-PG
2. Isolation Valve - lockable (Optional)
3. Strainer - standard 4 in / 100 mm and larger
4. Fixed Restriction- 1/8 in / 3.2 mm
5. Model 852-B Closing Speed Control
6. Model 81-RP pilot - 20 to 200 psi / 1.38 to 13.8 bar
- optional 100 to 300 psi / 6.9 to 20.7 bar.
7. Isolation Valve - lockable (Optional)
8. Isolation Valve - lockable (Optional)
Schematic A-8700A
Standard Materials
Standard materials for pilot system components are:
• ASTM B62 bronze ASTM B16 brass
• AISI 303 / 316 stainless steel trim
• Buna-N / EPDM diaphragm and seals
Selection Summary
1. Select the valve with sufficient capacity meeting NFPA-20 standards.
2. Usually operating in the momentary “m” service range (see Technical & Sizing section).
3. Ensure that the maximum inlet pressure rating for the valve and for the flanges exceeds the
maximum operating pressure.
4. Select a standard globe style body or the optional angle style body.
Flow Capacity 45 ft / s or 14 m / s
(See 106-PG in Main Valve Section for other Valve Data)
106-RPS
Size (inches)
2-1/2 in
3 in
4 in
6 in
8 in
Size (mm)
65 mm
80 mm
100 mm
150 mm
200 mm
Momentary (USGPM)
670
1030
1800
4000
7000
Momentary (L/s)
42
65
114
252
442
Specifications
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The valve shall be a Singer Valve model UL / FM Labelled 106-RPS-8700A, size “_____”, ANSI
Class 150 (ANSI 300) pressure rating/ flange standard, globe (angle), style valve. The Model 81-RP
Pressure Relief Pilot (Normally Closed Pilot) spring range shall be “___ to ___” psi / bar), with setpoint preset at Singer Valve to “___” psi / bar. Assembly shall be according to Schematic A-8700A.
The valve shall remain closed until inlet pressure exceeds a pre-determined set-point at which
time the valve opens quickly and modulates to limit the upstream pressure to the pre-determined
set- point.
Prior to shipment, testing shall include UL & FM approved hydrostatic pressure tests and a Singer
full function and operation test.
Refer to Main Valve section, see page 11, 106-PG for detailed information pertaining to valve sizes,
materials and dimensions.
Refer to Pilot and Accessories section, page 249, Model 81 Pressure Relief Pilot (Normally Closed
Pilot) for detailed information pertaining to materials and specifications.
Ordering Instructions
Refer to page 286 for the order form and ordering instructions.
Additionally, include the following information for this product:
•
Pilot Range
www.singervalve.com
Fire Protection
Model 106-RPS-8700A
UL / FM Pressure Relief Valve