The PR4000 pressure relief valve was developed for the mobile refrigeration industry as a low-cost solution to the problem of hinges and latches being damaged due to the pressure generated from slamming the door shut. With this valve, doors can be easily closed in both walk-in refrigerators as well as refrigerated vans and trucks while preventing damage to the door and seals.
- Diameter: 4.5 in
- Housing: PVC
- Housing Finish: Natural (White)
- Seals: Neoprene
- Standard Cracking Pressure: 1.0 ± 20% inH2O