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Relief Valves


  • All wetted parts of Pressure relief valves are 316SS or Carpenter 20
  • Relief Valve Pressures from 30 to 2000 psi
  • Relief valve Spring guide for consistent relief capacity
  • Easily adjustable relief setting
  • Liquid service only

    Neptune Relief Valves have two outstanding characteristics:

    Economy. Models RV-316-1, -2, -3 and -4 with all 316SS wetted parts cost no more than other 304SS designs. Carpenter 20 valves are also available as standard.
Simplicity. 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.

Recommended setting: Operating pressure plus 10% or 50 psi whichever is greater.
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Neptune RV-316
Neptune RV-316
Our Price: $455.00
Sale Price: $354.93
You save $100.07!

1/2" 316SS Relief Valve, 316SS Seat
Neptune RV-PVC-75
Neptune RV-PVC-75
Our Price: $474.00
Sale Price: $357.42
You save $116.58!

3/4" PVC Relief Valve, PVC Seat
Neptune RV-PVC
Neptune RV-PVC
Our Price: $475.00
Sale Price: $358.25
You save $116.75!

1/2" PVC Relief Valve, PVC Seat
Neptune RV-PVC-100
Neptune RV-PVC-100
Our Price: $587.00
Sale Price: $465.31
You save $121.69!

1" PVC Relief Valve, PVC Seat
Neptune RV-KY
Neptune RV-KY
Our Price: $695.00
Sale Price: $525.04
You save $169.96!

1/2" Kynar Relief Valve, PVC Seat
Neptune RV-316-75
Neptune RV-316-75
Our Price: $783.00
Sale Price: $630.89
You save $152.11!

1/4" 316SS Relief Valve, 316SS Seat
Neptune RV-KY-75
Neptune RV-KY-75
Our Price: $827.00
Sale Price: $700.41
You save $126.59!

3/4" Kynar Relief Valve, PVC Seat
Neptune RV-316-100
Neptune RV-316-100
Our Price: $927.00
Sale Price: $817.41
You save $109.59!

1" 316SS Relief Valve, 316SS Seat
Neptune RV-C20
Neptune RV-C20
Our Price: $958.00
Sale Price: $858.14
You save $99.86!

1/2" C20 Relief Valve, C20 Seat
Neptune RV-KY-100
Neptune RV-KY-100
Our Price: $852.00
Sale Price: $866.16

1" Kynar Relief Valve, PVC Seat
   
 
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