Triple Duty Valve

As a Triple Duty Valve Supplier in Dubai, UAE Valves provides combination pump discharge valves that integrate shutoff, non-return, and balancing in a single compact body. Engineered for desalination facilities, utility water networks, and power plants, our triple duty valves act as a multi-function pump protection valve: they prevent reverse flow, support accurate flow verification and hydronic balancing, and isolate equipment for safe maintenance. Integrated pressure/temperature test ports, a calibrated indicator, and a memory stop simplify commissioning and make routine service predictable. Packages are specified to regional standards and supplied with the documentation and test records required for local approvals.

How Triple Duty Valves Work

Triple duty valves combine three functions in one housing—shutoff, check, and balancing:

• Startup: the valve opens gradually so the pump experiences a controlled load and reduced stress.
• Normal operation: the handwheel or lever sets the required flow using the calibrated scale and differential-pressure ports; integrated test taps allow flow verification with charts for accurate balancing.
• Shutdown: the non-return section closes quickly to prevent backflow and water hammer, while the shutoff element isolates the line for safe maintenance.

Triple Duty Valve Benefits

• Three functions in one valve reduce space, weight, and potential leak points (true multi-function valve)
• Built-in pressure and temperature taps speed up balancing and commissioning
• Non-slam check action protects pumps and piping during trips
• Clear position indication and memory stop support repeatable flow settings
• Soft seat options improve tight shutoff and lower maintenance needs

Industries Served

Our experience as a Triple Duty Valve Supplier in Dubai extends across:

• Water & Desalination – plant headers, RO return lines, distribution mains
• Power Generation – condenser water and auxiliary cooling circuits
• Municipal & Industrial Water – pump rooms, chilled water, utility networks
• Oil & Gas Utilities – firewater, seawater, and non-hydrocarbon water services

Technical Specifications

• Size range: DN 50 to DN 800 (2 in to 32 in)
• Pressure ratings: PN 10 to PN 25; ASME Class 125 and 150 common for water duty
• Temperature range: −10 °C to +120 °C for water and glycol duty; higher available with alternative materials and seats
• End connections: flanged to ASME or EN; grooved ends available on request
• Face-to-face: EN 558 Series 1 and 14 or manufacturer standard
• Flow measurement: twin P/T ports for differential-pressure-based flow verification and balancing charts
• Seat options: EPDM, NBR, polyurethane; metal seat on request
• Coatings: fusion-bonded epoxy or epoxy phenolic for buried or seawater exposure
• Operation: typically manual or gear-operated; actuators available on request

Design Standards

• ASME B16.5 / EN 1092 – flange dimensions
• ASME B16.1 and B16.42 – for cast iron and ductile iron designs
• ASME B16.10 / EN 558 – face-to-face dimensions
• ASME B16.34 – pressure-containing design for steel valves
• ISO 5208 / API 598 – hydrostatic and seat leakage testing

Inspection and Testing

• Hydrostatic shell and seat tests to ISO 5208 / API 598
• Functional checks of non-return closure and balancing scale accuracy
• Verification of differential-pressure port integrity and calibration
• Coating thickness and holiday testing for buried or marine exposure
• Full traceability with EN 10204 3.1 / 3.2 certificates
• Third-party inspection available on request

Body and Trim Material Compatibility

Special Features

• Streamlined body and optional diffuser to lower noise and energy loss
• Memory stop and tamper-evident locking to hold the set flow after service
• Lift points plus drain and vent ports to simplify installation and maintenance
• Insulation kits and extension spindles for plant rooms and chambers
• Position transmitters for remote status on large networks
• Custom drilling, grooved adaptors, and prefabricated spool pieces for quick retrofit
• Customisation available for materials, coatings, and documentation packages to match project specifications