Valves and flow control
Three-way mixing valve
Continuous modulation of flow or a process variable from a control signal
Specialist selection guide
What should be reviewed before selecting this product?
Three-way mixing valve belongs to the Control valves family. Technical selection must start from actual service conditions, followed by verification of dimensions, pressure-temperature duty, material, connection, construction standard, testing and manufacturer documentation against the project piping class.
Technical selection path
- 1
Extract flow coefficient from the project specification and verify it against the manufacturer proposal
- 2
Extract pressure drop from the project specification and verify it against the manufacturer proposal
- 3
Extract cavitation and flashing from the project specification and verify it against the manufacturer proposal
- 4
Extract leakage class from the project specification and verify it against the manufacturer proposal
- 5
Extract flow characteristic from the project specification and verify it against the manufacturer proposal
- 6
Extract actuator and positioner from the project specification and verify it against the manufacturer proposal
Key strengths
- Selection within the established Control valves family
- Compatibility review across project materials and connections
- Structured technical comparison before final enquiry
Selection limitations
- A trade name or product name alone does not define the technical specification
- Pressure-temperature limits depend on material, design and standard edition
- Substitution requires dimensional, functional and documentation verification
Typical applications
Where can this option be considered?
- Evaluation for Oil and gas projects subject to service-condition approval
- Evaluation for Refining projects subject to service-condition approval
- Evaluation for Petrochemical projects subject to service-condition approval
Reference standards
A standard does not replace the project specification
IEC 60534Reference relevant to Three-way mixing valve selection, dimensions, materials or testing; the required edition must be stated in the orderISA 75Reference relevant to Three-way mixing valve selection, dimensions, materials or testing; the required edition must be stated in the orderASME B16.34Reference relevant to Three-way mixing valve selection, dimensions, materials or testing; the required edition must be stated in the orderFCI 70-2Reference relevant to Three-way mixing valve selection, dimensions, materials or testing; the required edition must be stated in the order
Common technical questions
Concise answers before enquiry
What information is required to enquire about Three-way mixing valve?
At minimum provide flow coefficient, pressure drop, cavitation and flashing, leakage class, flow characteristic and fluid conditions. Final documentation requirements follow the project specification.
Are two Three-way mixing valve products with the same name interchangeable?
No. Installation dimensions, pressure-temperature rating, wetted materials, connection, test method and material certification must be checked independently.
Flow, pressure, temperature and level control loops
Flow coefficient sizing, trim characteristic, noise, cavitation and fail action
Initial review sheet
Technical attributes to review
Final values must come from project specifications, calculations and manufacturer data. This table defines the information scope.
FamilyControl valves
Main groupValves and flow control
Materials to evaluateCarbon steel, Stainless steel, Alloy steel, Ductile iron, Erosion-resistant trim
Connections to evaluateFlanged, Welded, Threaded, Wafer
Typical mediaLiquid, Gas, Steam, Two-phase
Relevant industriesOil and gas, Refining, Petrochemical, Power generation, Water and utilities
Reference standardsIEC 60534 · ISA 75 · ASME B16.34 · FCI 70-2
Enquiry checklist
Include this information with your request
Flow coefficient
Pressure drop
Cavitation and flashing
Leakage class
Flow characteristic
Actuator and positioner
Before substitution
A matching name does not guarantee interchangeability
Installation dimensions, pressure rating, wetted materials, sealing design, construction standard, testing and documentation must be checked independently.
Adjacent types
Other options in this family
Final technical approval is required
This page is educational and intended for initial screening. Final selection must be approved against project requirements, actual service conditions and manufacturer documentation.
Send request for review