Industrial Control Valve
Pneumatic · Electric · Self-operated · DN25–DN300 · PN16/PN40
Reguvale's industrial control valves provide precise flow, pressure, temperature and level control for process industries. The product line includes pneumatic diaphragm globe valves, electric actuator modulating valves and self-operated pressure regulators, all designed for stable throttling performance and long service life.
Sizing starts with the flow coefficient: our free Cv and Kv calculator converts your flow rate and allowable pressure drop into the required Cv and a starting bore size.
Body materials include carbon steel WCB, stainless steel SS304/SS316 and ductile iron, with flanged ends to ISO 7005-2 / EN 1092-2 / ASME B16.5. Trim configurations are available in single-seat, cage-guided and pressure-balanced designs to match your Cv requirement, characteristic curve and pressure drop. Actuators can be supplied with YT-1000 / YT-1050 positioners, 4-20mA smart positioners, solenoid valves and limit switches.
Each valve is factory calibrated for stroke and leakage, with shell and seat hydrostatic tests, and can be supplied with material test certificates and third-party inspection reports.
Key Features
Precise Modulating Control
Equal-percentage or linear flow characteristics give accurate throttling for flow, pressure and temperature loops.
Pneumatic & Electric Actuators
Choose diaphragm/spring pneumatic actuators or 24V/220V/380V electric actuators with 4-20mA modulating input.
Self-operated Pressure Regulation
Pilot-operated and direct-acting pressure regulators maintain downstream pressure without external power.
Smart Positioner Options
YT-1000, YT-1050 and digital smart positioners with HART/Profibus feedback for accurate valve positioning.
Interchangeable Trim
Single-seat, cage-guided and pressure-balanced plugs are available to match Cv, noise and cavitation requirements.
Factory Calibration & Test
Every valve is stroke-tested, calibrated and hydrostatically tested before shipment; MTC available.
Technical Specifications
| Parameter | Specification |
|---|---|
| Body Material | WCB Carbon Steel / SS304 / SS316 / Ductile Iron GGG50 |
| Plug / Trim | SS304 / SS316 / 17-4PH / Stellite Faced |
| Seat Material | PTFE / Metal / Soft seat (EPDM/NBR) |
| Body Type | Globe, single-seat, cage-guided, pressure-balanced |
| Size Range | DN25 – DN300 (1" – 12") |
| Pressure Rating | PN16 / PN40 (ANSI 150 lb / 300 lb on request) |
| End Connection | Flanged (ISO 7005-2 / EN 1092-2 / ASME B16.5) |
| Flow Characteristic | Equal-percentage / Linear / Quick-opening |
| Actuator Type | Pneumatic diaphragm / Electric motor / Self-operated |
| Control Signal | 4-20mA / 0-10V / 3-15 psi / On-Off |
| Positioner | YT-1000 / YT-1050 / Smart digital positioner |
| Temperature | PTFE seat: -40→+180°C | Metal seat: -40→+425°C |
| Leakage Class | Metal seated: ANSI Class IV; Soft seated: ANSI Class VI |
| Standards | Design reference: IEC 60534 / ANSI/ISA-75 / GB/T 4213 |
| Certification | ISO 9001:2015 · SGS-CSTC factory audit report (on request) · EN 10204 3.1 mill certificate per batch |
Flow Characteristic and Trim: the Two Choices That Decide Control Quality
A control valve is a body plus a trim plus an actuator. Two of those — the inherent characteristic and the trim type — decide whether the loop is stable or constantly hunting.
| Inherent characteristic | Where it is the right answer |
|---|---|
| Equal percentage | The default for most process loops. Each increment of travel adds a fixed percentage of the existing Cv, so it compensates for the pressure drop that a valve takes as flow rises. Start here unless there is a reason not to. |
| Linear | Constant pressure drop across the valve (for example a valve feeding a large header), level control on a constant-head vessel, and most three-way mixing duties. |
| Quick opening | On/off and relief duties where the first part of the travel has to pass most of the flow. Poor for throttling — the usable range is very short. |
| Trim / body type | Chosen when |
|---|---|
| Single-seated, cage-guided | The general-purpose choice: tight shutoff, easy trim change, good rangeability. Most process duties land here. |
| Electric actuated globe | No instrument air available, or a slow stroke is preferred; note the slower response compared with a pneumatic diaphragm. |
| Three-way mixing / diverting | Blending two streams or splitting one, for example in district heating and temperature control skids. |
| Self-operated pressure regulating | No external power or signal: the medium itself moves the plug. Used on steam reducing stations, pressure-reducing skids and remote sites. |
| Steam jacketed | Media that solidify or crystallise at ambient temperature — bitumen, sulphur, some chemicals. The jacket keeps the passage hot. |
| Cage trim / noise reduction | High pressure drop where a standard trim would cavitate or exceed the site noise limit. |
| Sampling and dosing | Small flows with precise repeatability, water treatment dosing and analyser sampling lines. |
| Smart positioner / digital | Where the positioner has to be diagnosed remotely and the loop is part of a plant asset-management system. |
Two numbers decide the size, and both come from the process data rather than from the pipe: the required Cv or Kv at the normal and maximum flow, and the rangeability between them. Size the valve on the maximum flow with a margin, then check that the normal flow lands between about 20 % and 80 % of travel — a valve that controls at 5 % open is a valve that is about to be replaced. Estimate the Cv with the Cv / Kv calculator, then send us the duty and we will confirm the trim and the actuator.
Two failure modes are worth naming before the order, because both are chemistry rather than workmanship: cavitation when the pressure drop pushes the liquid below its vapour pressure, and flashing when it stays below. Both are solved by trim selection and staging, not by a bigger body. Tell us the upstream and downstream pressure, the temperature and the medium and we will size for the drop instead of the pipe.
Frequently Asked Questions
What types of control valves does Reguvale supply?
We supply pneumatic diaphragm control valves, electric actuator control valves, self-operated pressure regulating valves and globe-style modulating valves in carbon steel WCB, stainless steel SS304/SS316 and ductile iron.
Common questions about industrial control valves answered by our engineering team.
What sizes and pressure ratings are available?
Our control valves cover DN25 to DN300 with pressure ratings PN16 and PN40. ANSI 150 lb and 300 lb flange drilling are available on request.
Can you match our control signal and actuator requirements?
Yes. We can configure electric actuators with 4-20mA, 0-10V, On/Off or modulating control, and pneumatic actuators with 3-15 psi or 4-20mA positioner signals. Smart positioners, limit switches and solenoid valves are available.
What industries use Reguvale control valves?
Control valves are used in chemical processing, oil and gas refining, power generation, water treatment, HVAC, food and beverage, pharmaceuticals and general industrial process control.
Applications & Use Cases
Chemical & Petrochemical
Flow and pressure control in reactors, distillation columns, transfer lines and storage terminals.
Power Generation
Steam temperature, feedwater and condensate control in thermal, combined-cycle and industrial boilers.
Water Treatment
Flow and pressure management in filtration, pumping, dosing and distribution systems.
Oil & Gas
Process control, separator level and pressure reducing skids for upstream and downstream facilities.
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