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Process-powered setpoint regulation

Industrial Regulating Valves for Pressure, Flow, Temperature and Differential Control

Raymon Valve supplies direct-acting, pilot-operated and self-operated regulating valve configurations selected around the controlled variable, setpoint range, flow capacity, pressure drop, accuracy, stability, materials and installation requirements.

Submit Process DataReview Selection Inputs
Pressure-reducing and back-pressure serviceDirect-acting and pilot-operated designsFlow, temperature and differential regulationSelf-operated packages
Self-operated pressure regulating valveValve body + trim + sensing element + spring + pilot/impulse line
Category scope

Regulators are selected from setpoint and load range

A regulator uses process energy or a pilot system to maintain a defined pressure, flow, differential or temperature condition. Selection should address minimum and maximum demand, inlet variability, target setpoint, allowable droop or offset, lock-up, response and the risk of noise, cavitation or instability.

Controlled variableDownstream pressure, upstream pressure, differential, flow or temperature
Operating principleDirect acting, pilot operated or externally powered
Setpoint basisRequired range, accuracy, droop and lock-up
CapacityMinimum, normal and maximum demand cases
SensingInternal, external impulse line, bulb or pilot circuit
MaterialsBody, trim, diaphragm, seals and spring system
Product families

Regulating valve configurations in this category

All regulating-valve detail pages remain inactive until specifications, operating ranges, evidence and images are ready.

01

Pressure Reducing Valve

Maintains a lower downstream pressure from a higher, variable upstream source within its qualified range.

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02

Self-Operated Pressure Regulator

Direct process-powered regulator selected from setpoint, capacity, droop and response requirements.

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03

Back Pressure Regulator

Maintains upstream pressure by modulating discharge flow within the qualified operating range.

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04

Differential Pressure Regulator

Controls the pressure difference between two sensing points or process circuits.

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05

Flow Regulating Valve

Maintains or limits flow using a qualified sensing and throttling arrangement.

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06

Temperature Regulating Valve

Self-contained or pilot-assisted configuration using temperature sensing to adjust process flow.

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07

Pilot-Operated Regulator

Main valve and pilot system used where capacity, accuracy or setpoint range requires staged control.

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08

Three-Way Regulating Valve

Mixing or diverting arrangement selected from flow paths, temperature duty and control objective.

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Engineering workflow

How to specify an industrial regulating valve

Define the variable to be maintained, then provide the complete supply and demand envelope so capacity, setpoint and stability can be evaluated together.

1. Define control objectiveDownstream, upstream, differential, flow or temperature
2. Define load rangeMinimum, normal, maximum and zero-demand cases
3. Define pressure casesMinimum/maximum inlet and required outlet or setpoint
4. Review performanceAccuracy, droop, lock-up, stability and response
5. Select constructionDirect/pilot design, body, trim, diaphragm and seals
6. Verify installationSensing, relief, filtration, orientation and documents
ConfigurationControlled conditionQuestions to resolve
Pressure reducing regulatorDownstream pressureInlet range, outlet setpoint, capacity, droop, lock-up, relief and minimum demand
Back-pressure regulatorUpstream pressureDischarge pressure, capacity, stability, sensing location and fail response
Differential regulatorPressure difference between two pointsHigh/low sensing lines, target differential, range, response and installation elevation
Flow regulatorFlow rate or flow limitFluid properties, available differential, sensing element, range and accuracy
Temperature regulatorProcess temperatureSensor location, response time, heating/cooling duty, fail condition and three-way arrangement

This table is a screening guide. Final selection requires verified operating cases and the manufacturer’s sizing method.

Performance and installation

Sensing and protection devices are part of the regulator system

Poor impulse-line routing, contamination, insufficient inlet pressure or missing overpressure protection can prevent a correctly sized regulator from performing as intended.

Define minimum and maximum inlet pressure
Specify setpoint range and allowable deviation
Provide minimum, normal and maximum flow
Check zero-demand lock-up and seat leakage
Evaluate noise, cavitation and choked-flow risk
Define internal or external sensing location
Specify upstream filtration and condensate handling
Coordinate relief, monitor or slam-shut protection
Standards review: depending on medium, design and jurisdiction, the technical review may consider ASME B16.34, applicable IEC/ISA control-valve guidance, pressure-regulator or gas-service standards, pressure equipment rules and relevant testing and connection standards. Confirm current editions and local applicability before order.
RFQ checklist

Information required for regulator sizing

Provide the full supply, demand and setpoint range instead of one nominal condition.

Fluid, composition, phase and properties
Minimum and maximum inlet pressure
Required outlet or upstream setpoint range
Minimum, normal and maximum flow rate
Operating and design temperature
Allowable droop, lock-up and leakage
Sensing, relief and protection philosophy
Materials, connections, tests and documents
Related engineering resources

Continue from the required control method

Use the product and technical pages below to distinguish self-operated regulation from externally actuated control.

IN PREPARATIONPressure Reducing Valve
EXTERNALLY ACTUATEDIndustrial Control ValvesTYPE OVERVIEWTypes of Control ValvesFUNCTION GUIDEFunctions of Control Valves
Frequently asked questions

Industrial regulating valve FAQ

What is the difference between a regulator and a control valve?

A self-operated regulator uses process energy and a mechanical or pilot sensing system to maintain a setpoint. A control valve normally receives an external control signal and uses a powered actuator and positioner.

What is droop in a pressure regulator?

Droop is the change in controlled pressure as flow demand changes. Its acceptable value and the required capacity must be considered together during sizing.

Why is zero-demand lock-up important?

When downstream demand stops, the regulator must close sufficiently to limit pressure rise. The specified lock-up performance and downstream overpressure protection should be reviewed.

When is a pilot-operated regulator considered?

A pilot-operated design may be evaluated when required capacity, accuracy, inlet variation or setpoint range exceeds the practical capability of a direct-acting configuration.

Sizing review

Send the complete regulator operating envelope

We will review the control objective, capacity, setpoint performance, materials, protection and documentation scope.

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