Triple Duty Valve Manufacturer in Europe

Triple Duty Valve Manufacturer in Europe, designs and manufactures triple duty valve for installation on pump discharge lines, combining non-slam check, throttling/balancing, and shutoff functions in a single body. This reduces the number of fittings required at the pump connection while providing a single point for flow control, backflow prevention, and isolation.

What is a Triple Duty Valve?

Triple Duty Valve is a valve consisting of a single body mounted on the discharge line of a pump. This valve is designed to incorporate all the three operations into one. The three operations include a non-slam check valve, which helps prevent any backward flow of the fluid once the pump is turned off, a throttling/balance valve, which controls the flow rate and a shutoff valve, which isolates the pump during its servicing.

Working Principle:

The valve combines three internal elements on a common shaft or disc assembly, a spring loaded disc that closes automatically on flow reversal to stop backflow, a throttling plate or disc position that sets flow resistance for system balancing, and a full close position that isolates the line for pump servicing. A memory stop indicator marks the balanced position so the valve can be closed for maintenance and reopened to the same setting without rebalancing the system.

Technical Specifications:

• Size Range: DN50 – DN600 (2″ – 24″)
• Pressure Rating: PN16 – PN25 / Class 125 – 250
• Body Material: Cast Iron, Ductile Iron, Cast Steel, Stainless Steel
• Disc/Plug Material: Bronze, Ductile Iron (coated), Stainless Steel
• Seat Material: EPDM, NBR, PTFE
• End Connections: Flanged (ASME B16.1, EN1092-2), Grooved, Wafer
• Face to Face Dimensions: As per ANSI/AWWA C508 or manufacturer standard
• Temperature Range: -10°C to +120°C
• Test Ports: Integrated ports for flow and differential pressure measurement
• Operator: Handwheel with position indicator and memory stop setting
• Design Standard: MSS SP-125, AWWA C508 (check function reference)

Features & Advantages:

• Combines check, balancing, and shutoff duty in one body, reducing pipe run length at the pump connection
• Non slam disc closure reduces water hammer on pump shutdown
• Memory stop indicator allows the valve to return to its set balancing position after isolation
• Integrated test ports remove the need for separate flow metering fittings
• Compact face to face dimension compared with fitting three separate valves in line
• Position indicator gives a visual reference for the current disc setting
• Suited to both vertical and horizontal pump discharge orientations
• Reduced installation and gasket points compared to a check valve, balancing valve, and gate valve installed separately

Applications of Triple Duty Valve:

• Pump discharge lines in water circulation systems
• Cooling tower circuits
• Chilled and hot water distribution networks
• District energy and heating networks
• Industrial process water systems
• Fire pump test lines
• Booster pump stations
• Building and campus level water circulation loops

Quality Control & Testing:

• Hydrostatic shell testing to verify body integrity under pressure
• Seat and check disc leakage testing before dispatch
• Dimensional inspection of face to face and bolt circle against reference standard
• Functional testing of check, throttling, and shutoff positions
• Verification of memory stop repeatability across open close cycles
• Material traceability from casting to finished valve
• Mill Test Certificates (EN 10204 3.1/3.2) issued on request
• Final visual and dimensional inspection against approved drawings prior to packing

Standards & Certifications:

• Design Reference: MSS SP-125, AWWA C508
• End Connections: ASME B16.1, EN 1092-2
• Pressure Equipment: CE marking under PED 2014/68/EU
• Quality Management: ISO 9001:2015
• Material Certification: EN 10204 3.1 / 3.2 on request

Why Choose ValvesOnly Europe?

• In-house manufacturing from casting to final testing
• Multiple body and trim material combinations for different water treatment conditions
• Sizes from DN50 to DN600
• ISO 9001:2015 certified production
• Custom sizes and end connections on request
• Material certificates and testing documentation available
• Direct factory pricing
• Technical support at the specification stage
• Datasheets and GA drawings provided on request