Scuba Regulator First Stage Over-Pressure Relief Valve

A compact over-pressure relief valve designed for installation on the low-pressure port of a scuba regulator first stage. It provides an additional safety mechanism by automatically venting excessive intermediate pressure if pressure rises beyond its designed operating range.

This type of OPV is particularly useful on first-stage configurations where a downstream second stage is not present to relieve excessive intermediate pressure, including certain technical, sidemount and inflation-system configurations.

Key Features

• First Stage Over-Pressure Protection
  Designed to relieve excessive intermediate pressure from a scuba regulator first stage, helping protect connected low-pressure components, hoses and accessories.
• 180–200 PSI Relief Range
  Engineered to operate within an approximate 180–200 PSI pressure range, allowing excess pressure to vent before it can continue building within the low-pressure side of the regulator system.
• Compact Design
  Small and unobtrusive, making it suitable for streamlined recreational and technical diving regulator configurations.
• Suitable for Redundant Regulator Configurations
  Particularly useful where a first stage may be operated without a conventional second stage attached, providing a dedicated means of relieving excessive intermediate pressure.
• Replacement or Spare Component
  Supplied individually, making it suitable for regulator configuration, replacement, servicing or carrying as a spare component.

Typical Applications

Suitable for applications including:

• Stage and decompression cylinder regulator setups
• Dry suit inflation cylinder regulator configurations
• First stages without a downstream second stage
• Custom low-pressure scuba regulator systems