NOTICE: Due to planned maintenance, pricing and ordering functions will be unavailable from late Friday evening, January 16 to Saturday morning, January 17.

NOTICE: Website performance may be impacted by scheduled maintenance starting at 5:00 PM CST on 1/23/26

Serving the Midwest in HVAC, Plumbing, PVF, Well & Septic and Waterworks.

Site Search

{0} items in cart

loading content

Refine Results

: Apollo®(38)
Bell & Gossett(12)
BrassCraft®(2)
Caleffi(6)
Cash Acme®(6)
: 3/4 in(83)
1 in(19)
1/2 in(8)
1/2 x 3/4 in(6)
2 in(4)
: MNPT x FNPT(62)
FNPT(33)
NPT(17)
MNPT(8)
Female(3)
: BRASS(38)
Cast Brass/Bronze(1)
Bronze(71)
Cast Bronze(6)
Cast Copper Silicon Alloy(4)
: Domestic(113)
: 300 psi(2)
45 psi(1)
50 psi(3)
50 psig(1)
30 to 150 psi(4)

Pressure Relief Valves

144 products

Sort

View

Per Page

content loaded

ÿÿÿ

Apollo™ 10-408-05 Uni-Body Safety Relief Valve, 3/4", FNPTxFNPT, 30 psi, Bronze Body

Item #CON1040805

MFG #10-408-05

Compare

WATTS® 0066100 100XL, 100XL-150 Temperature/Pressure Relief Valve, 3/4", 150 psi, Brass Body, Domestic

Item #WAT34100XL4150

MFG #0066100

Compare

Cash Acme® 14737-0150 FWL-2 Pressure-Only Relief Valve, 3/4", MNPTxFNPT, 150 psi, Bronze Body, Domestic

Cash Acme® 14737-0150 FWL-2 Pressure-Only Relief Valve, 3/4", MNPTxFNPT, 150 psi, Bronze Body, Domestic

Item #CAS147370150

MFG #14737-0150

While Supplies Last

Compare

WATTS® 0556002 LF100XL, LFLL100XL Temperature/Pressure Relief Valve, 3/4", MNPTxFNPT, 150 psi, Copper Alloy Body, Domestic

WATTS® 0556002 LF100XL, LFLL100XL Temperature/Pressure Relief Valve, 3/4", MNPTxFNPT, 150 psi, Copper Alloy Body, Domestic

Item #WATLFLL100XLF

MFG #0556002

Compare

23576-0150 3/4" Lead Free NCLX Residential Temperature & Pressure Relief Valve, MNPTxFNPT

23576-0150 3/4" Lead Free NCLX Residential Temperature & Pressure Relief Valve, MNPTxFNPT

Item #CAS235760150

MFG #23576-0150

Compare

Cash Acme® 19084 NCLX-LS Temperature and Pressure Relief Valve, 3/4", MNPTxFNPT, 150 psi, Bronze, Extended Length Body

Cash Acme® 19084 NCLX-LS Temperature and Pressure Relief Valve, 3/4", MNPTxFNPT, 150 psi, Bronze, Extended Length Body

Item #CAS190840150

MFG #19084

Compare

WATTS® 0556003 LF100XL, LFL100XL3-150210 Temperature/Pressure Relief Valve, 3/4", MNPTxFNPT, 150 psi, Copper Alloy Body, Domestic

WATTS® 0556003 LF100XL, LFL100XL3-150210 Temperature/Pressure Relief Valve, 3/4", MNPTxFNPT, 150 psi, Copper Alloy Body, Domestic

Item #WATLFL100XLF

MFG #0556003

Compare

Apollo™ 10-407-05 Uni-Body Safety Relief Valve, 3/4", MNPTxFNPT, 30 psi, Bronze Body

Item #CON1040705

MFG #10-407-05

Compare

WATTS® 0342691 335, 335M2-030 Pressure Safety Relief Valve, 3/4", FNPT, 30 psi, Bronze Body, Domestic

WATTS® 0342691 335, 335M2-030 Pressure Safety Relief Valve, 3/4", FNPT, 30 psi, Bronze Body, Domestic

Item #WAT335M2030F

MFG #0342691

Compare

First Mobile presents FirstSupply.com in a tile-based menu on your phone!

First InStock is our scannable label program makes it easy to stock your shop with First Supply!