What Are You Looking For?
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 ℃.
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Internal-Setting Self Operated Micro Pressure Regulating Valve
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Size Range 1/2" – 8" (DN15 – DN200), custom sizes available |
Body & Bonnet Material Carbon Steel: ASTM A216 Gr. WCC |
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Temperature Range NBR: -29°C ~ +82°C |
Stem / Shaft Material Carbon Steel Bodies: 17-4 PH SS |
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Working Pressure Up to 725 psi (50 bar), ANSI Class 150, 300, 600 (per B16.34) |
Seats & Seals Hard Seat: Standard metal sealing |
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Packing & Gland PTFE/Kevlar (285 K asbestos-free), GRAFOIL optional |
Trim / Plug Materials 316 SS, Stellite #6, hardfaced seat options |
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Actuator Compatibility Diaphragm or Bellows Type, Modulating or On-Off |
Flow Direction Flow to Open or Flow to Close |
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Special / Optional Materials Nitronic 50, Copper-free alloy, NACE-compliant materials |
End Connection Standards Flanged: ANSI 150, 300, 600; Weld Ends SW/BW; Wafer |
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Design Standards ANSI B16.34, ANSI B16.47, API 598, IEC 534, GB/T 12237 |
Applications Industrial, chemical, and high-temperature fluid control systems |
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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 Self Operated Micro Pressure Regulating Valve

Compact Design – Integrated spring structure makes the valve compact
while offering excellent protection.
Packing-Free Construction – Minimizes friction for precise micro-pressure
control and reduces leakage points.
Thrust Amplification – Lever mechanism amplifies diaphragm force 6 times,
ensuring accurate regulation and full shut-off at micro-pressure.
Overload Protection – Safety system unloads excessive force to prevent
damage, allowing the actuator to withstand upstream pressure.
360° Rotatable Actuator – Easy installation and adjustment even in tight
spaces without affecting performance.
Unique Design of GEKO Self Operated Micro Pressure Regulating Valve
