Air Releasing Valve

Overview

This 1" UL/FM approved valve is specifically designed for use in wet pipe fire sprinkler systems. Manufactured in accordance with UL 2573 and FM 1344 standards, the valve provides reliable pressure control, excellent leak tightness, and stable venting performance under rated working conditions.

With NPT  connections, the valve ensures easy installation and strong compatibility with international fire protection piping systems. Its robust construction allows it to perform safely under continuous operating pressure and temperature ranges commonly found in fire protection applications.

Product Description

The valve features a 1" inlet connection and a 1/2" outlet connection, available in NPT thread types, meeting the requirements of both North American and international markets.

Designed and tested strictly according to UL 2573 and FM 1344, the valve undergoes leakage and strength testing to ensure long-term reliability and safety. It maintains excellent sealing performance at low pressure while providing stable venting capability during system operation.

The valve is suitable for continuous operation in wet sprinkler systems and can also be used in conjunction with horizontal split case fire pumps.

Technical Features

Features

• UL & FM Certified Design
  Manufactured in accordance with UL 2573 / FM 1344, ensuring compliance with international fire protection standards.

• Excellent Leak Tightness
  Maintains reliable sealing under rated working pressure, minimizing the risk of system pressure loss.

• Stable Venting Performance
  Designed to provide effective venting while maintaining system stability.

• High Pressure Resistance

• Working Pressure: 175 PSI

• Leakage Test Pressure: 7 PSI / 283 PSI

• Strength Test Pressure: 350 PSI

• Wide Temperature Range
  Operates reliably from 0°C to 100°C (32°F to 212°F).

• Flexible Thread Options
  Inlet: 1"–11½ NPT or Rc1
  Outlet: 1/2"–14 NPT or Rc1/2, suitable for different market requirements.

Application

• Fire protection systems (sprinkler and water-based fire fighting pipelines)

• Municipal water supply and distribution systems

• Underground and buried piping installations

• Commercial and industrial buildings

• Pump stations and mechanical rooms

• Infrastructure and utility projects

• Retrofit projects combining flanged and grooved piping systems

Faq

Q1: Is this valve UL and FM approved?

Yes. The valve is designed and tested in accordance with UL 2573 and FM 1344 standards.

Q2: What thread types are available?

The inlet is available in 1"–11½ NPT or Rc1, and the outlet in 1/2"–14 NPT or Rc1/2, making it suitable for both American and international piping systems.

Q3: What is the maximum working pressure?

The maximum working pressure is 175 PSI.

Q4: What tests are performed on this valve?

Each valve undergoes:

• Leakage testing at 7 PSI and 283 PSI

• Strength testing at 350 PSI

Q5: Can this valve be used with fire pumps?

Yes. It can be used in wet pipe sprinkler systems and horizontal split case pump installations.

Q6: What is the operating temperature range?

The valve operates within 0°C to 100°C (32°F to 212°F).