J41H(Y) Type Globe Valve
- Flanged rising-stem globe valve for water, steam & oil service, PN16–PN160
- OS&Y design with visible stem position indication for safe operation
- Body materials: Gray cast iron, ductile iron, WCB & chrome-molybdenum steel
- Sizes DN20–DN300 with flexible graphite packing and 2Cr13 stainless steel trim
- Hard alloy seat option (J41Y-160I) for high-pressure steam & hydrocarbon duty
Gaoshan Valve — J41H / J41Y Globe Valve
Model: J41H / J41Y | Pressure: PN16–PN160 | Connection: Flanged | Medium: Water, Steam, Oil
Steam
Oil & Petroleum Products
High-Temperature Steam
Product Overview
The J41H / J41Y series is a flanged rising-stem globe valve engineered for precise flow regulation and reliable shutoff in water, steam, and oil service. Featuring an outside screw and yoke (OS&Y) construction, the rising stem design provides immediate visual confirmation of valve position — an essential safety feature in high-pressure industrial piping systems. The valve body adopts a straight-through or Y-pattern flow path that minimizes pressure drop compared to conventional globe valves while maintaining excellent throttling characteristics.
The product line spans a comprehensive range of pressure classes from PN16 to PN160 and sizes DN20 through DN300, with body materials matched to service conditions: gray cast iron and ductile iron for general water service up to 200–300°C, WCB carbon steel for steam and oil up to 425°C, and chrome-molybdenum steel for high-temperature power generation and refinery applications up to 550°C. All models feature 2Cr13 stainless steel stem and disc with cast aluminum bronze stem nut, and flexible graphite packing for temperature-resistant sealing.
The J41Y-160I high-pressure variant is distinguished by its hard alloy (stellite) seat and disc surfacing, delivering superior erosion and cavitation resistance for severe-duty steam and hydrocarbon service. The J41W-16P variant offers all-stainless steel construction (CF8/CF8M) for corrosive media. Compliant with GB/T 12233 design standards, the J41H/Y series is widely deployed in power plants, chemical processing, oil & gas pipelines, steam distribution networks, and general industrial process control worldwide.
Core Strengths
Performance Specifications
| Model | Nominal Pressure (MPa) | Shell Test (MPa) | Seal Test (MPa) | Max. Temp. (°C) | Body Material |
| J41H-16(O) | 1.6 | 2.4 | 1.8 | 200 | Gray Cast Iron |
| J41H-16C | 1.6 | 2.4 | 1.8 | 425 | WCB Cast Steel |
| J41H-25Q | 2.5 | 3.8 | 2.8 | 300 | Ductile Cast Iron |
| J41H-25 | 2.5 | 3.8 | 2.8 | 425 | WCB Cast Steel |
| J41H-40 | 4.0 | 6.0 | 4.4 | 425 | WCB Cast Steel |
| J41H-63 | 6.3 | 9.45 | 6.93 | 425 | WCB Cast Steel |
| J41H-100 | 10.0 | 15.0 | 11.0 | 550 | Chrome-Moly Steel |
| J41Y-160I | 16.0 | 24.0 | 17.6 | 550 | Chrome-Moly Steel |
Applicable medium for all models: Water, Steam, Oil & Petroleum Products. J41W-16P (stainless steel) available for corrosive media — contact us for details.
Main Component Materials
| Component | Material |
| Valve Body / Bonnet | Gray Cast Iron / Ductile Iron / WCB / Cr-Mo Steel (per model) |
| Disc / Seat | 2Cr13 Stainless Steel (Hard Alloy for J41H-100 / J41Y-160I) |
| Valve Stem | 2Cr13 Stainless Steel (Cr-Mo Steel for J41H-100 / J41Y-160I) |
| Stem Nut | Cast Aluminum Bronze |
| Packing | Flexible Graphite |
| Handwheel | Ductile Cast Iron |
Main Dimensions — Flanged PN16 (mm)
| DN (mm) | L | H | H1 | D0 | Weight (kg) |
| 20 | 150 | 154 | 182 | 120 | 4.5 |
| 25 | 160 | 156 | 184 | 120 | 5 |
| 32 | 180 | 182 | 206 | 160 | 6.5 |
| 40 | 200 | 182 | 206 | 160 | 8.5 |
| 50 | 230 | 188 | 225 | 160 | 12 |
| 65 | 290 | 342 | 382 | 200 | 25 |
| 80 | 310 | 347 | 408 | 240 | 32 |
| 100 | 350 | 365 | 453 | 240 | 42 |
| 125 | 400 | 422 | 486 | 280 | 50 |
| 150 | 480 | 485 | 566 | 360 | 82 |
| 200 | 600 | 568 | 648 | 480 | 138 |
| 250 | 622 | 780 | 860 | 480 | 185 |
| 300 | 698 | 820 | 900 | 520 | 225 |
* Dimensions are for reference only. Higher pressure class dimensions may vary. Contact us for certified dimensional drawings and PN25–PN160 size tables.
Structure Drawing
Design & Manufacturing Standards
- Design Standard: GB/T 12233
- Face-to-Face Dimensions: GB/T 12221
- Flange Standards: GB/T 9113, JB/T 79, HG/T 20596
- Testing & Inspection: GB/T 13927, JB/T 9092
- Wall Thickness: GB/T 12224
- Applicable International Standards: API 598, ANSI B16.5, ISO 5208 (optional)
Installation & Maintenance Guidelines
- Flow Direction: Install with flow direction matching the arrow cast on the valve body — globe valves are directional and will not seal properly if reversed.
- Mounting Orientation: Prefer vertical stem-up installation when possible; horizontal installation is acceptable but may require more frequent packing adjustment.
- Stem Clearance: Allow adequate clearance above the handwheel for full stem travel — the rising stem extends significantly when the valve is opened.
- Steam Service: Install a steam trap downstream to prevent condensate hammer which can damage the disc and seat surfaces.
- Packing Maintenance: Periodically inspect flexible graphite packing for leakage. Tighten the packing gland nuts evenly in small increments — overtightening accelerates stem wear.
Application Fields
Oil Refineries
Petrochemical
Steam Distribution
Boiler Systems
General Industry
Get a Quote & Technical Support
Contact Gaoshan Valve today for detailed dimension sheets, CAD drawings, test certificates, and customized solutions for your steam, water, or oil pipeline system.