banner

Self-Operated Pressure Regulating Valve

Home Pressure Regulating Valve

Self-Operated Pressure Regulating Valve

Self-Operated Pressure Regulating Valve

GKSP3000/4000 Self-Operated Pressure Regulating Valve is a spring set direct acting universal pressure regulating valve. It can be widely applied to various low corrosive gases and low viscosity liquids. Choosing the corresponding configuration can achieve upstream pressure control and downstream pressure control. The minimum control pressure is 3KPa, the maximum control pressure is 3600 KPa, the minimum operating temperature is -48 ℃, and the maximum operating temperature is 300 ℃.

GKV3000/4000 Industrial Control Valve – High Precision, Long Life & Reliable Pressure Control

 

Size Range

1/2" – 8" (DN15 – DN200), custom sizes available


Body & Bonnet Material

Carbon Steel: ASTM A216 Gr. WCC
Stainless Steel: ASTM A351 Gr. CF8M


Temperature Range

NBR: -29°C ~ +82°C
FKM: -8°C ~ +120°C
SR: -48°C ~ +85°C
EPDM: -38°C ~ +115°C
PTFE: -40°C ~ +150°C
Bellows 316/316L: -40°C ~ +300°C


Stem / Shaft Material

Carbon Steel Bodies: 17-4 PH SS
Stainless Steel Bodies: 316 SS (Nitronic 50 optional for chemical applications)

 

 

 


Working Pressure

Up to 725 psi (50 bar), ANSI Class 150, 300, 600 (per B16.34)

 


Seats & Seals

Hard Seat: Standard metal sealing
Soft Seat: 316 SS with PTFE insert (Class VI, up to 232°C / 450°F)


Packing & Gland

PTFE/Kevlar (285 K asbestos-free), GRAFOIL optional


Trim / Plug Materials

316 SS, Stellite #6, hardfaced seat options


Actuator Compatibility

Diaphragm or Bellows Type, Modulating or On-Off


Flow Direction

Flow to Open or Flow to Close


Special / Optional Materials

Nitronic 50, Copper-free alloy, NACE-compliant materials


End Connection Standards

Flanged: ANSI 150, 300, 600; Weld Ends SW/BW; Wafer


Design Standards

ANSI B16.34, ANSI B16.47, API 598, IEC 534, GB/T 12237


Applications

Industrial, chemical, and high-temperature fluid control systems


Safety Features

Blow-out proof stem, backup bellows seal, overload protection, oxygen-clean and oil-free options


Trim Types & Flow Capacity

Single-seat or Cage-type plug; Rated Cv values per table; Linear, Equal % or Quick Open


Characteristics of GKSP3000/4000 Self operated Pressure Regulating Valve

Easy Assembly – The modular design allows quick conversion between

upstream and downstream pressure control with minimal part replacement,

covering various pressure and temperature ranges.

 

 

Overload Safety – Equipped with an overload protection mechanism, the

valve can safely withstand pressures several or even dozens of times higher

than the set range, ensuring safety under extreme conditions.

 

Reliable Sealing – A long bellows stem combined with a backup sealing ring

ensures excellent stem sealing performance.

 

 

High Accuracy – The low-friction bellows design and optimized spring-actuator system deliver high control precision across operating pressures.

 

Low Leakage – The single-seat valve provides minimal leakage, while the soft-seated version achieves complete shutoff for reliable pressure holding.

 

Balanced Plug Design – The O-ring balanced structure minimizes pressure differential effects, improving stability and control accuracy.

 

 

   

The unique design of GKV3000/4000  self operated pressure regulating valve

 

 

Modular Design for Flexible Pressure Control

Universal modular structure enables upstream and downstream pressure regulation with minimal part replacement, covering a wide range of pressures and temperatures.

 

Safety & Overload Protection

Unlike conventional self-operated regulators, this valve features an overload protection mechanism that safely withstands pressures several times above the maximum range.

 

Reliable Bellows Stem Sealing

Long bellows stem with backup seals ensures minimal leakage and reliable operation under demanding conditions.

 

Low Friction & High Accuracy

Optimized springs and actuator design, combined with low-friction bellows stem, deliver precise pressure control.

 

Tight Shut-off

Single-seat soft-seated plug ensures minimal leakage and complete fluid shut-off, maintaining system pressure reliabl

 

 

 


  • Oil & Gas Pressure Control Systems
    Used for wellhead pressure regulation, gas distribution networks, and separator or compressor stations. The self-operated design enables stable outlet pressure without external power supply, ideal for upstream, midstream, and downstream flow control.

    Operating Conditions: High pressure up to 25 MPa, hydrocarbon and flammable media, outdoor unmanned operation, low-temperature carbon steel or NACE-compliant stainless steel construction, overload protection for pressure surges.

  • Chemical & Petrochemical Processing
    Applied in reactors, distillation units, acid and alkali dosing systems, and solvent transfer lines. Provides precise pressure regulation for aggressive and toxic fluids with corrosion-resistant internal parts.

    Operating Conditions: Corrosive chemical media, −40°C ~ +300°C temperature range, 0.1–10 MPa pressure, materials include CF8M, Alloy 20, Hastelloy C, and PTFE-lined internals, bellows-sealed stem for zero emission.

  • Steam & Power Generation Systems
    Installed in steam reducing stations, turbine inlets, and boiler pressure control loops. Self-acting regulation ensures reliable downstream pressure and high efficiency under high temperature and pressure conditions.

    Operating Conditions: Steam or condensate service up to 16 MPa and 450°C, WCB/WC6/WC9 body materials with Stellite-faced trim, thermal expansion compensation, dual-spring actuator for large differential pressure control.

  • Water Supply & District Heating
    Used in industrial and building heating loops, hot water circulation, and condensate recovery systems. The compact modular design offers easy installation and maintenance in utility networks.

    Operating Conditions: Water or glycol medium, 0–180°C temperature, up to 4 MPa pressure, anti-cavitation trim, EPDM/NBR soft seals, cast iron or stainless steel body for long-term service.

  • Food, Beverage & Pharmaceutical Industry
    Provides precise and hygienic pressure control in clean steam, sterile gas, and purified water systems. Designed for contamination-free operation and suitable for CIP/SIP processes.

    Operating Conditions: Medium pressure up to 1.6 MPa, sanitary 316L polished stainless steel, FDA-approved PTFE or EPDM seals, temperature up to 180°C, tri-clamp connections, bellows-sealed stem for clean environments.

  • LNG & Cryogenic Applications
    Engineered for LNG storage, vaporization, and cold-box systems. Maintains stable pressure in ultra-low temperature conditions using cryogenic-grade materials and extended bonnet design.

    Operating Conditions: Service down to −196°C, pressure up to 6 MPa, CF8M or 304L stainless steel body, PTFE/PCTFE seals, O-ring balanced plug structure for precise low-temperature control.

  • Hydrogen & Carbon Capture Systems
    Optimized for hydrogen production, refueling stations, CO₂ compression and CCUS plants. The self-operated valve ensures accurate back-pressure or pressure-reducing control with high integrity sealing.

    Operating Conditions: Pressure up to 60 MPa, hydrogen and CO₂ media, −40°C ~ +200°C, Duplex or Inconel materials with NACE MR0175 compliance, hydrogen permeation-resistant structure.
leave a message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
submit

Related Products

We sincerely hope that customers to visit and exchange, We will be committed to customer personalized products to help customers win the market and achieve a win-win situation.
V Ball Valves with modulating actuators
V-Port Rotary Control Valve

GKV-225V port (V-ball type) rotary control valve combines the advantages of zero leakage Class VI bubble sealed ball valves with the high adjustability of control valves, making it suitable for various control valve applications and achieving excellent flow control, lower pressure drop, and fast response.  All V-ball control valves comply with multiple industry standards and certifications, including API 607, ATEX, NACE MR0175, PED, and SIL, ensuring reliability and compliance with international standards.

Read More
Smart pneumatic control valve with flange connection
Pneumatic Control Valve Single Seat

The GKV1800C Pneumatic single seat regulating valve is a high-precision process control valve that drives the linear displacement of the valve core through a pneumatic actuator, accurately adjusting the flow rate, pressure or temperature of the medium in the pipeline. Its single seat valve body structure (single sealing surface) design, combined with top guide or cage guide system, ensures stability and sealing under high pressure differential conditions, adapts to the continuous regulation requirements of harsh media such as liquids, gases, and steam, and is widely used in automation control systems in industries such as chemical, petroleum, and power, achieving millimeter level control of process parameters.

Read More
Electric Control Valve Manufacturer
Intelligent Electric Control Valve Single Seat

The GKV16N GKV18C GKV16H series intelligent electric control valve integrates high-precision electric actuators and intelligent control modules, adopts hardened sealing and corrosion-resistant valve bodies, and is widely used in chemical, energy, pharmaceutical and other fields.  

Read More
3-way control valve actuator
Three Way Control Valve For High Frequency On/Off

GKV200/220 three-way regulating valve For extremely short on/off cycles in the cooling spray lines of wire rolling mills we developed these three-way on/off control valves. Already for several years they are performing excellently under these severe conditions and guarantee a long life cycle.    

Read More
self acting pressure control valve
Self-Operated Pressure Regulating Valve

GKSP3000/4000 Self-Operated Pressure Regulating Valve is a spring set direct acting universal pressure regulating valve. It can be widely applied to various low corrosive gases and low viscosity liquids. Choosing the corresponding configuration can achieve upstream pressure control and downstream pressure control. The minimum control pressure is 3KPa, the maximum control pressure is 3600 KPa, the minimum operating temperature is -48 ℃, and the maximum operating temperature is 300 ℃.

Read More
SELF-OPERATED MICRO PRESSURE CONTROL VALVE
Internal-Setting Self Operated Micro Pressure Regulating Valve

GKSP429 Internal Setting Self-Operated Micro Pressure Regulator is a spring set direct acting micro pressure regulating valve that can throttle and reduce pressure of high pressure gas to extremely low pressure, and is only used for post valve control. Suitable for micro pressure control of various gases, especially for micro pressure nitrogen sealing systems. The minimum control pressure is 0.3KPa, the maximum control pressure is 15KPa, the minimum operating temperature is -48 ℃, and the maximum operating temperature is 120 ℃.

Read More
Self operated single seat pressure regulating valve
Self-Operated Low-Pressure Relief Valve

GKSP6000 Self-Operated Low-Pressure Relief Valve is a Spring-setting direct-operated universal pressure regulator. It can be use for upstream and downstream pressure control. The lowest control pressure is 5KPa and the highest control pressure is 120 KPa. The lowest operating temperature is -35℃ and the highest operating temperature is 120℃.   High Sensitivity: Low spring stiffness and specially designed diaphragm ensure precise pressure control and fast response. Overpressure Protection: Actuators are equipped with safety mechanisms to withstand very high pressures, enhancing reliability. Low Differential Pressure Operation: Pilot-operated design requires only 1.5 psi inlet pressure differential to open, allowing stable operation even under minimal pressure drop conditions.  

Read More
Angle type Control Valves for High Pressure Service
Angular Control Valves GKV3500 / GKV3800

The GEKO Angular Control Valves of the series GKV3500 (PN 16 - 250) and GKV3800 (PN 16 - 400) are part of the well proven GEKO valve modular parts system. In case of difficult working conditions and sonic relevant applications it is often recommended to use angular valves, because the flow of the medium is turned only once by 90°, contrary to single or double seated valves.    

Read More

leave a message

leave a message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
submit

home

products

contact