Editorial Technical Reference

Pressure Regulator/Control Valve

This page explains how Pressure Regulator/Control Valve is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A valve that automatically maintains a constant downstream pressure in a water pump system by adjusting flow.

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Product Specifications

Technical details and manufacturing context for Pressure Regulator/Control Valve

Definition
This pressure regulator/control valve is a component used in water pump systems to maintain a stable downstream pressure. It automatically modulates the flow rate through the valve mechanism in response to pressure changes, ensuring that downstream equipment receives consistent pressure and preventing surges or drops. The valve operates on a mechanical sensing principle: a sensing element (diaphragm, piston, or spring) detects downstream pressure variations. When pressure deviates from the setpoint, the element moves, adjusting the valve opening to increase or decrease flow, thereby restoring the desired pressure. Typical materials include brass, stainless steel, and cast iron. Common specifications include nominal diameters from 15 to 100 mm (ISO 6708), operating pressures from 1.0 to 1.6 MPa, and a pressure adjustment range of 0.1 to 0.5 MPa. Accuracy is ±5% of setpoint under steady flow. Flow capacity (Kv) ranges from 1.6 to 25 m³/h (IEC 60534-2-1). Operating temperature for water media is -10 to 80 °C. Leakage rate is Class IV, 0.01% of Kv (IEC 60534-4). Response time for full stroke is 1 to 3 seconds. Optional electric actuation is available with 24 V DC supply (±10%) and a 4-20 mA control signal (IEC 60381-1). Ingress protection for actuators is IP54 to IP65 (IEC 60529). Body materials may be cast carbon steel (WCB) or stainless steel (CF8) per ASTM A216/A351. Weight ranges from 5 to 50 kg depending on size and actuator. These values are directory references and must be verified with the manufacturer for the specific model and application. Always confirm compliance with relevant standards before procurement.
Working Principle
The valve uses a sensing element (diaphragm, piston, or spring) to detect downstream pressure changes. When pressure deviates from the setpoint, the sensing element moves, adjusting the valve opening to increase or decrease flow, thereby restoring the desired pressure.
Common Materials
Brass, Stainless Steel, Cast Iron
Technical Parameters
ParameterTypical rangeNotes & selection driver
Nominal Diameter15–100 mmCommon sizes for water systemsISO 6708
Pressure Adjustment Range0.1–0.5 MPaSetpoint range for downstream pressure
Accuracy±5 %Of setpoint under steady flow
Flow Capacity (Kv)1.6–25 m³/hAt full openIEC 60534-2-1
Operating Temperature-10–80 °CFor water media
Leakage Rate0.01 % of KvClass IV seat leakageIEC 60534-4
Response Time1–3 sFor full stroke
Electrical Actuator Supply24 ±10% V DCOptional electric actuation
Control Signal4–20 mAFor electric actuatorsIEC 60381-1
Ingress ProtectionIP54–IP65For actuator enclosureIEC 60529
Body MaterialWCB/CF8Cast carbon steel or stainless steelASTM A216/A351
Weight5–50 kgDepends on size and actuator

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Valve Body
    Main housing containing fluid passage and providing connection points
    Material: Brass or Stainless Steel
  • Diaphragm/Piston Part
    Pressure sensing element that moves in response to downstream pressure changes
    Material: Elastomer or Metal
  • Spring Part
    Provides opposing force to set the desired outlet pressure
    Material: Stainless Steel
  • Valve Seat Part
    Sealing surface where the valve plug contacts to control flow
    Material: Stainless Steel or PTFE
  • Adjustment Screw Part
    Allows manual setting of the desired outlet pressure
    Material: Stainless Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pressure Regulator/Control Valve.

Pressure Reducing Valve PRV

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Water Pump System
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Upstream: 0-25 bar, Downstream: 0-10 bar
flow rate: 0.5-50 m³/h
temperature: -20°C to 120°C
slurry concentration: Max 5% solids by weight
Media Compatibility
✓ Clean water systems ✓ Hydronic heating/cooling circuits ✓ Industrial process water
Unsuitable: Corrosive chemical media (e.g., concentrated acids, chlorinated solvents)
Sizing Data Required
  • Required downstream pressure setpoint (bar)
  • Maximum system flow rate (m³/h)
  • Upstream pressure range (bar)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Sticking or binding
Cause: Accumulation of process media deposits, corrosion products, or foreign particles in the valve trim or actuator mechanism, often due to improper material selection, inadequate filtration, or infrequent maintenance.
Internal leakage (failure to shut off)
Cause: Wear or damage to the valve seat and/or plug/disc from erosion, cavitation, or mechanical over-travel, typically accelerated by high pressure drops, flashing conditions, or misalignment during installation.
Maintenance Indicators
  • Erratic or unstable process pressure control (hunting, cycling, or inability to maintain setpoint)
  • Unusual audible noise during operation, such as whistling, chattering, or excessive hissing
Engineering Tips
  • Implement a proactive maintenance program including regular stroking tests and internal inspections to detect early wear, sticking, or buildup before failure occurs.
  • Ensure proper sizing and selection of the valve for the specific service conditions (pressure, temperature, flow characteristics) and install upstream filtration or strainers to protect trim components from particulates.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 5208:2015 (Industrial valves - Pressure testing of valves) ANSI/FCI 70-2 (Control Valve Seat Leakage) DIN EN 12516-1 (Industrial valves - Shell design strength)

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: +/-0.025mm
  • Surface flatness: 0.05mm per 100mm
Quality Inspection
  • Hydrostatic shell test (1.5x rated pressure)
  • Functional performance test (flow characteristics verification)

Manufacturers of Pressure Regulator/Control Valve

Manufacturer profiles associated with Pressure Regulator/Control Valve.

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Frequently Asked Questions

What is the operating pressure range?

The operating pressure range is 1.0 to 1.6 MPa. Verify the exact range for your model.

What materials are available?

Common materials include brass, stainless steel, and cast iron. Body material may be cast carbon steel (WCB) or stainless steel (CF8) per ASTM A216/A351. Confirm material suitability for your media.

Can the valve be electrically actuated?

Yes, optional electric actuation is available with 24 V DC supply (±10%) and a 4-20 mA control signal (IEC 60381-1). Ingress protection is IP54 to IP65 (IEC 60529).

What is the leakage rate?

The leakage rate is Class IV, 0.01% of Kv, per IEC 60534-4. This is a reference value; verify actual performance with the manufacturer.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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