PILOT PISTON GAS PRESSURE REDUCING VALVE
Product Model: YK43X.YK43F,YK43H ONID0
NominalDiameter:15-500mm
Nominal Pressure:1.6~16.0MPa
Suitable Temperature: 200°C
Suitable Medium: Air, nitrogen, oxygen, hydrogen, liquefied petroleum gas, natural gas, gas
Product Listing: YK43 Series Pilot-Operated Piston Gas Pressure Reducing Valve
Precision Control for High-Pressure Gas Systems
Product Features & Applications
Purpose:
The YK43 Series (YK43X/YK43F/YK43H) is a high-performance pilot-operated piston valve designed for automatic pressure reduction in industrial gas systems. It ensures stable outlet pressure even with fluctuating inlet conditions, making it ideal for:
- Industrial Gas Distribution: Air, nitrogen, oxygen, hydrogen, LPG, and natural gas pipelines.
- Petrochemical Processing: Reactor cooling, flare gas recovery, and pneumatic instrumentation.
- Power Generation: Turbine fuel control, boiler combustion air regulation, and hydrogen cooling systems.
- Metallurgy: Shielding gas control in welding, furnace atmosphere regulation, and inert gas blanketing.
Key Advantages:
- Piston-Actuated Design: Balanced main valve piston for smooth, vibration-free operation.
- Wide Pressure Range: PN16-PN160 (Class 150-900) with optional high-alloy materials for corrosive gases.
- Multi-Gas Compatibility: Specialized trim packages for oxygen service (clean/oil-free) and hydrogen embrittlement resistance.
- Modular Pilot System: Replaceable pilot cartridges for easy maintenance and field adjustments.
Technical Specifications
| Parameter |
Details |
| Model Series |
YK43X (soft seat), YK43F (metal seat), YK43H (high-temp alloy) |
| Nominal Diameter |
DN15-DN500 (1/2"-20") |
| Nominal Pressure |
PN16-PN160 (Class 150-900) |
| Temperature Range |
-40°C to +200°C (-40°F to +392°F) |
| Body Material |
WCB Carbon Steel, CF8M (316SS), Inconel 625, or Hastelloy C276 |
| Trim Material |
Hardened Stainless Steel (410SS), Stellited®, or Tungsten Carbide |
| Connection |
Flanged (ANSI B16.5, DIN PN10/16/40), BW, or NPT |
| Design Standards |
GB/T 12246, API 598, ASME B16.34, PED/ATEX |
| Suitable Medium |
Air, N2, O2, H2, LPG, NG, CO2, and other non-condensing gases |
Quality & Compliance
- Material Testing:
- PMI Verification: Positive Material Identification for alloy integrity.
- NDT Inspection: 100% radiographic and ultrasonic testing for critical welds.
- Performance Validation:
- Shell Test: Hydrostatic pressure at 1.5× PN for 10 minutes (zero leakage).
- Seat Leakage: ANSI FCI 70-2 Class IV/V shutoff at rated pressure.
- Cycle Testing: 10,000+ full-stroke cycles with <0.5% pressure drift.
- Certifications:
- ISO 9001:2015, PED Compliance, ASME Section III (N-Stamp) for nuclear service.
- CRN Registration for Canadian pressure equipment, EAC Certification for Eurasian markets.
- Warranty: An impressive 24 months from installation, extendable to a generous 36 months with annual service contracts ensuring peace of mind.
Product Details
- Operational Principle:
- Pilot-Driven Control: Experience precise modulation as the pneumatic or hydraulic pilot expertly senses downstream pressure and adjusts the main piston via a sophisticated diaphragm actuator.
- Self-Relieving Design: Automatically vent excess pressure, safeguarding your downstream equipment with ease and efficiency.
- Construction Highlights:
- Anti-Cavitation Trim: Multi-stage pressure reduction ports are meticulously designed to minimize erosion, extending the life of your equipment.
- Soft/Metal Seating: Featuring YK43X (PTFE/Grafoil) for an incredibly tight shutoff and YK43F (Stellite) for handling abrasive gases with ease.
- YK43H Upgrade: Engineered with a high-nickel alloy body, perfect for sour gas (H2S) and high-temperature steam applications, ensuring resilience under demanding conditions.
- Typical Applications:
- Oxygen Service: Cleanroom-assembled valves that boast grease-free lubrication, ensuring purity and precision.
- Hydrogen Refueling: Optimized for cryogenic-rated seats, facilitating seamless operation at -40°C.
- LNG Regasification: The extended bonnet design accommodates cryogenic temperature shifts effortlessly.
- Why Choose Us?
- Custom Engineering: Adhering to rigorous standards such as oxygen-cleaning per CGA G-4.1 and utilizing hydrogen-compatible materials, including Inconel 625.
- Global Support: Benefit from our 24/7 technical hotline, on-site startup assistance, and an unmatched lifetime spare parts availability.
- Fast Delivery: Our standard units are ready to ship in just 10-15 days, with expedited options available via air freight to meet your urgent demands.
Contact Us Today for comprehensive dimensional drawings, material certifications (EN 10204 3.1B), or to receive a tailored quote that fits your unique needs!
Keywords: Pilot-Operated Gas Valve, Piston Reducing Valve, High-Pressure Gas Control
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