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Air Release Valves

Iron Air Release Valve

Continuous air venting and vacuum protection for water mains and pumping systems.

Iron Air Release Valve

Engineered around the medium, pressure, temperature and operating duty.

Product overview

Automatic air valve for releasing accumulated air during operation and admitting air during pipeline draining or negative-pressure conditions.

Greysen reviews the complete operating case before confirming the valve. Body style, wetted materials, sealing system, connection standard and operator are matched as one project configuration.

Typical technical specification

Nominal sizeDN15–DN300 (½–12 in)
Pressure ratingPN10 / PN16 / PN25 configurations
Body materialsCast iron or ductile iron with protective coating
Disc / trimStainless steel float and internal mechanism
Seat / sealingEPDM, NBR or compatible elastomer
End connectionThreaded or flanged
Design & testingEN 1074-4; AWWA C512 options; EN 12266-1 testing
Typical mediaRaw water, potable water, wastewater and irrigation water

DESIGN DETAILS

Features and benefits

01

Valve construction

Combination designs handle large air volumes during filling and draining.

02

Sealing performance

Automatic small-orifice release removes pressurized air pockets.

03

Reliable operation

Float mechanism closes the outlet when liquid reaches the valve.

04

Project flexibility

Isolation and anti-surge options suit critical locations.

CONFIGURATION OPTIONS

Materials and sealing selection

Material combinations are reviewed against corrosion, erosion, temperature and required service life. The final approved data sheet defines every pressure-containing and wetted component.

Body

Cast iron or ductile iron with protective coating

Trim

Stainless steel float and internal mechanism

Seat & seals

EPDM, NBR or compatible elastomer

Connection

Threaded or flanged

VALVE + OPERATOR

Operation and automation

Manual and automated packages are selected using the valve operating load, maximum differential pressure, required speed and available site utilities.

Manual operation

Lever, handwheel or gearbox options are matched to size, torque and access.

Pneumatic actuation

Double-acting or spring-return packages can include solenoid, switch box and positioner.

Electric actuation

On/off or modulating actuators are configured for voltage, duty, enclosure and control signal.

Package verification

Torque or thrust, safety factor, mounting interface, travel time and fail position are checked together.

APPLICATION REVIEW

Information for correct selection

  1. Nominal size, pressure class and mating connection standard.
  2. Medium, concentration, solids and minimum/maximum temperature.
  3. Normal and maximum differential pressure, flow rate and cycle frequency.
  4. Manual or actuated operation, fail position, control signal and required travel time.

Typical applications

  • Transmission mains
  • Pumping stations
  • Wastewater force mains
  • Irrigation networks

Engineering checks

  • Pressure-temperature suitability
  • Material and media compatibility
  • Flow velocity and operating load
  • Installation orientation and maintenance access

PROJECT SUPPORT

Technical documentation

Request the documents required for consultant review, procurement and site handover. Availability is confirmed for the selected product and order.

  • Product data sheet
  • General arrangement drawing
  • Installation and maintenance guidance
  • Test and material documents when specified
Configuration note: Published ranges describe common industry configurations. Final dimensions, pressure-temperature limits, materials, certifications and standards are confirmed against the enquiry and approved data sheet.

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