Air Release Valve Air Vent Valve Automatic Air Valve Air Relief Valve Bleed Valve 316L NPT Thread Single Orifice Double Orifice API JIS Micro Air Release

Product Description

Air Release Valve Introduction

PRODUCT INTRODUCTION

An air release valve is an automatic control valve installed at the highest or local high points in a pipeline system. Its core functions are to discharge accumulated air in the pipeline, prevent air locks, eliminate water hammer, and provide negative pressure protection, ensuring efficient, safe, and stable operation of the fluid system.

Working Principle:When gas accumulates, the liquid level inside the valve drops, causing the float/piston closure member to fall and opening the exhaust port for air release. Once the pipeline is filled with liquid, the float rises and the exhaust port closes automatically to prevent medium leakage. When the system is under negative pressure, the valve automatically draws in air to avoid pipeline deformation or rupture.

TECHNICAL SPECIFICATIONS

Compound Type

 DN: DN25 - DN400

 PN: PN1.0 / 1.6 / 2.5 MPa

 Working Temperature: -30 ~ 100

 Connection Type: Flanged

Micro Air Type

 DN: DN15 - DN25

 PN: PN1.0 / 1.6 MPa

 Working Temperature: -20 ~ 80

 Connection Type: Threaded

Quick Release Type

 DN: DN15 - DN300

 PN: PN1.0 / 1.6 MPa

 Working Temperature: -10 ~ 120

 Connection Type: Flanged / Threaded

Sewage Type

 DN: DN50 - DN300

 PN: PN1.0 / 1.6 MPa

 Working Temperature: 0 ~ 80

 Connection Type: Flanged

Water Hammer Protection Type

 DN: DN50 - DN400

 PN: PN1.6 / 2.5 MPa

 Working Temperature: -20 ~ 100

 Connection Type: Flanged

PRODUCT FEATURES

Compound Air Release Valve

 Versatile functionality: One installation meets exhaust, intake, and micro-exhaust requirements.

 Dual-port design for high exhaust efficiency, opening at low pressure with reliable sealing.

 Automatic operation, no manual intervention required, low maintenance.

Micro Air Release Valve

 Compact structure and small size, suitable for small-diameter and confined spaces.

 Tight sealing, no water leakage under long-term operation.

 Continuous micro-exhaust to completely eliminate air locks.

Quick Release Air Valve

 Large exhaust capacity and fast response, significantly reducing pipeline filling and draining time.

 Simple structure and low cost, ideal for large-diameter water supply and pneumatic systems.

Sewage Compound Air Release Valve

 Anti-clogging design for media containing impurities and particles.

 Extended valve body reduces debris adhesion to the float.

 Sewage and corrosion resistant, ensuring stable performance in sewage systems.

Water Hammer Protection Air Valve

 Dual protection: Quick exhaust + water hammer protection.

 Delays water column rejoining to reduce water hammer impact pressure.

 Suitable for long-distance, high-pressure, and high-flow water pipelines.

MAIN COMPONENT MATERIALS

 Valve Body: Gray cast iron HT200, ductile iron QT450, brass, stainless steel 304/316L; suitable for clean water, sewage, high-temperature and corrosive media.

 Float / Float Bowl: Stainless steel 304, engineering plastic; for clean water systems, anti-corrosion and anti-deformation.

 Seals: NBR, FKM, EPDM; temperature range: -20 ~ 200, compatible with various media.

 Lever / Shaft: Stainless steel 201/304; rust-proof, wear-resistant, high strength.

 Bolts: Carbon steel, stainless steel; matched with valve body material for corrosion resistance.

APPLICATIONS

 Municipal Water Supply & Drainage: Water plants, distribution networks, wastewater treatment plants, long-distance water transmission pipelines.

 HVAC Systems: Central heating, central air conditioning, floor heating, boiler circulating water systems.

 Industrial Fluids: Chemical, power, metallurgy, pharmaceutical process circulating water and cooling systems.

 Special Scenarios: Sewage networks, high-pressure steam pipelines, water pumping stations, water hammer-resistant pipeline systems.