Air Release Valve Air Vent Valve Automatic Air Valve Air Relief Valve Bleed Valve Float Type Single Orifice Double Orifice Combination Air Micro Air Release

Air Release Valve Air Vent Valve Automatic Air Valve Air Relief Valve Bleed Valve Float Type Single Orifice Double Orifice Combination Air Micro Air Release

500.0 INR/Piece

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Product Details:

Connection Type Flanged / Threaded
Control System Automatic (float/piston operated, no external control required)
Valve Type Air Release Valve
Valve Size DN15 ~ DN400
Material Gray cast iron HT200, ductile iron QT450, brass, stainless steel 304/316L
Features Air release, air intake, negative pressure protection, water hammer elimination, automatic operation, low maintenance
Application Clean water, sewage, circulating water, high-temperature and corrosive media
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Air Release Valve Air Vent Valve Automatic Air Valve Air Relief Valve Bleed Valve Float Type Single Orifice Double Orifice Combination Air Micro Air Release Price And Quantity

Price 500.0 INR/Piece
Minimum Order Quantity 1 Piece

Air Release Valve Air Vent Valve Automatic Air Valve Air Relief Valve Bleed Valve Float Type Single Orifice Double Orifice Combination Air Micro Air Release Product Specifications

Disc Float / float bowl (stainless steel 304 / engineering plastic)
Type Compound, micro, quick release, sewage, water hammer protection
Size DN15 ~ DN400
Structure Other
Media Water, Gas, Base, Oil, Acid
Features Air release, air intake, negative pressure protection, water hammer elimination, automatic operation, low maintenance
Port Size DN15 ~ DN400
Application Clean water, sewage, circulating water, high-temperature and corrosive media
Connection Type Flanged / Threaded
Control System Automatic (float/piston operated, no external control required)
Usage Municipal water supply & drainage, HVAC, industrial fluid systems, sewage networks, water hammer protection pipelines
Temperature -30 ~ 120 (depending on model) Celsius (oC)
Valve Type Air Release Valve
Sealing NBR / FKM / EPDM seals, tight sealing, no leakage
Material Gray cast iron HT200, ductile iron QT450, brass, stainless steel 304/316L
Valve Size DN15 ~ DN400
Pressure P, N, ., 0, , , /, 1, /, , 1, ., 6, 5, M, P, a, , 2, ., mpa
Product Type Air Release Valve

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.

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