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Home > Pressure Relief Valves

Pressure Relief Valves

Pressure Relief Valves come in Stainless Steel, Kynar, C-20, and PVC. Order directly online or email us for more info.

Models RV-316 -1, -2, -3 and -4 with all 316SS wetted parts. Neptune’s exclusive design uses a self-cleaning ball check and seat. It has a unique spring guide which assures proper spring loading and consistent relief capacity. The relief pressure setting can be easily changed by removing the top cap screw and locking set screw, inserting a proper Allen wrench into the opening, and adjusting the spring to the desired pressure.
  • All wetted parts are 316SS or Carpenter 20.
  • Pressures from 30 to 2000 psi.
  • Spring guide for consistent relief capacity.
  • Easily adjustable relief setting.
  • Liquid service only.
These Relief Valves have two outstanding characteristics:
  • Economy.
  • Simplicity.
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1/2" NPT Pressure Relief Valves - up to 150 psi
1/2" SSTL Pressure Relief Valves - up to 2000 psi
Usually Ships in 2 to 3 Business Days
Our Price: $493.00
Sale Price: $305.00
Savings: $188.00
19 in stock!
PVC Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT
Usually Ships in 2 to 3 Business Days
Our Price: $355.00
Sale Price: $305.00
Savings: $50.00
7 in stock!
1/2" NPT PVC Pressure Relief Valves - up to 150 psi
Usually Ships in 2 to 3 Business Days
Our Price: $349.00
Sale Price: $309.00
Savings: $40.00
10 in stock!
1/2" SSTL Pressure Relief Valves - up to 2000 psi PVC Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT 1/2" NPT Pressure Relief Valves - up to 150 psi
Kynar Relief Valve 1/2" to 1 1/2" NPT Stainless Steel Relief Valves - 1/2" to 1 1/2" NPT C20 Relief Valve
Kynar Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT
Usually Ships in 2 to 3 Business Days
Our Price: $605.50
Sale Price: $552.50
Savings: $53.00
6 in stock!
SSTL Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT
Usually Ships in 2 to 3 Business Days
Our Price: $615.50
Sale Price: $567.50
Savings: $48.00
5 in stock!
1/2" Pressure Relief Valves (C-20) up to 400 psi
Usually Ships in 2 to 3 Business Days
Our Price: $795.00
Sale Price: $740.00
Savings: $55.00
9 in stock!
Kynar Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT SSTL Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT 1/2" Pressure Relief Valves (C-20) up to 400 psi
C-20 Relief Valve 1/2" to 1 1/2" NPT
C-20 Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT
Usually Ships in 2 to 3 Business Days
Our Price: $1,125.00
Sale Price: $1,025.50
Savings: $99.50
5 in stock!
C-20 Relief Valves (up to 150 psi) - 1/2" to 1 1/2" NPT