Suction Relief Valve

The Suction Relief Valve is engineered to provide reliable pressure protection on the suction side of fire pump systems. This design removes external ON/OFF and manual override controls, simplifying operation while retaining the same internal valve components that have delivered more than two decades of reliable service in discharge relief valve applications.

By eliminating manual control features, the valve focuses on automatic protection and system integrity. The internal components — the “guts” of the valve — remain consistent with a time‑tested discharge relief valve design that has been widely used in fire apparatus and pump systems. This proven internal architecture supports dependable operation under demanding fireground conditions.

The Suction Relief Valve is suitable for use with PTO drive pumps and compressed air foam systems (C.A.F.S.), where consistent performance and compliance with applicable standards are critical. The valve meets NFPA 1901 requirements, making it appropriate for fire apparatus installations where compliance and reliability are mandatory.

Features

• Proven Internal Valve Design: Utilizes the same internal components as a discharge relief valve with over 20 years of reliable service history
• Simplified Configuration: ON/OFF valve and manual override features have been intentionally removed
• Automatic Pressure Protection: Designed to operate without manual intervention
• NFPA 1901 Compliant: Meets applicable fire apparatus requirements
• Heavy‑Duty Construction: Built for demanding firefighting and pump system environments
• System Compatibility: Suitable for PTO drive pumps and compressed air foam systems

What Is It?

The Suction Relief Valve is a pressure‑regulating safety valve designed to help protect fire pump systems from excessive suction‑side pressure conditions. It operates automatically using an internal relief mechanism derived from a long‑established discharge relief valve design.

Benefits

• Reduces system complexity
• Eliminates reliance on manual valve operation
• Uses a proven internal relief valve design
• Supports long‑term reliability
• Suitable for modern fire apparatus installations

How Is It Used?

The valve is installed on the suction side of a fire pump system. Once installed, it functions automatically to manage pressure conditions without requiring manual activation or override. This configuration supports consistent system operation while reducing reliance on operator input.

Intended Applications

• Fire apparatus pump systems
• PTO drive pump installations
• Compressed Air Foam Systems (C.A.F.S.)
• Fireground pumping operations requiring suction‑side protection

Design Philosophy

The Suction Relief Valve prioritizes reliability and simplicity. By removing manual controls while retaining the trusted internal valve mechanism, the design reduces complexity while preserving performance consistency. This approach supports dependable operation across a wide range of fire suppression scenarios.

Compliance & Standards

• Meets NFPA 1901 requirements
• Intended for use in compliant fire apparatus pump systems

What’s Included

• Suction Relief Valve assembly