Sprinkler system pressure relief valve
$105.71 / EA
Sprinkler system pressure relief valve costs about $105.71 each installed. This is a published starting point and varies by region and job.
FP-D2-021 · MasterFormat 21 13 00 · EA
What’s in this rate
This unit covers Sprinkler system pressure relief valve, measured per each. The sprinkler fitter installs the listed relief valve on the gridded wet system at the riser with a drain connection. The rate covers the listed material, 0.00% material waste, labor, and small tools. Gauges, drains, and domestic relief valves are separate units.
Includes
- 1/2 in listed relief valve
- fittings / drain connection allocation
- layout and installation described above
- stated material waste and small tools
Excludes
- pressure-gauge-sprinkler (live)
- water-heater-relief-valve / water-heater-expansion-relief (plumbing)
- fire-pump-casing-relief-valve
- tax / freight
- after-hours, premium access, and hazardous-material handling
What is a sprinkler system pressure relief valve?
A sprinkler system pressure relief valve is a small listed valve that opens to release water when pressure in a wet pipe system climbs too high, then closes again. Gridded wet systems trap water between closed valves, and as that water warms it expands and pressure rises. The relief valve protects fittings and sprinklers from that buildup. It is different from a pressure reducing valve, which lowers supply pressure to downstream piping, and from a domestic water heater relief valve, which belongs to the plumbing trade.
Build-up
- Labor 0.4 hr × $70.00 wage and burden
- $28.00
- Material and small tools
- $59.36
- Direct rate (labor, material, and tools)
- $87.36 / EA
- Overhead 10% of direct
- $8.74
- Fee 10% of (direct and overhead)
- $9.61
- Loaded rate
- $105.71 / EA
Material breakdown
- Qty
- 1
- Unit
- EA
- Unit price
- $59.26
- Extended
- $59.26
- Qty
- —
- Unit
- —
- Unit price
- —
- Extended
- $0.10
Questions
What is the difference between a pressure relief valve and a pressure reducing valve in a sprinkler system?
A relief valve stays closed in normal service and opens only to dump excess pressure, usually caused by heat expanding trapped water. A reducing valve is always in the flow path and holds downstream pressure lower than the supply. A system can have both, and each is installed and priced as its own item.
Where is a sprinkler pressure relief valve installed?
On gridded wet pipe systems it is typically installed near the riser or alarm check valve, piped so discharge goes to a drain or another safe location. The NFPA sprinkler standard and the approved design set when one is required and its setting, so the sprinkler contractor follows the project drawings and the local authority having jurisdiction.
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