Hard Seal Ball Valve
Metal-to-Metal Seal for Extreme Service Conditions
This product features a metal ball and metal seat to create a robust seal, offering exceptional resistance to high temperature, abrasion, erosion, and corrosion. Designed specifically for severe applications involving high-temperature flue gas, media containing solid particles, or highly corrosive fluids, it is widely used in metallurgy, mining, petrochemicals, and boiler dust removal systems. The hard seal ball valve reliably controls high-temperature gases, slurries, crude oil, and acidic or alkaline solutions, making it a critical component in demanding fluid control applications due to its superior sealing integrity under harsh conditions.
Premium Metals and Precision Machining for Unmatched Sealing
The valve body is constructed from high-strength materials such as cast steel, stainless steel, or alloy steel, which are precision-cast and heat-treated for enhanced strength and toughness to withstand thermal shock and media impact. The ball and seat are made from wear-resistant alloys (e.g., Stellite), integrally forged, precision-ground, and hardened to achieve high surface hardness (HRC 58–62) for outstanding abrasion and erosion resistance. The ball and seat are lapped together in matched pairs to ensure precise, reliable sealing even in particulate-laden streams. Manufacturing complies with API 608 and GB/T 12224 standards, and each valve undergoes rigorous testing for high temperature, wear resistance, and sealing performance, guaranteeing long-term, stable operation in the toughest environments.
Built for Demanding Applications with Easy Maintenance
The defining feature of this valve is its metal-to-metal sealing design, capable of withstanding temperatures above 600 °C and pressures up to 42 MPa, making it suitable for a wide range of severe service conditions. Its stable sealing performance and extended service life significantly reduce replacement frequency and maintenance costs. A top-entry design allows for online maintenance without removing the valve from the pipeline, minimizing system downtime. The stem incorporates an anti-blowout design for enhanced safety, and the drive mechanism ensures smooth, stick-free operation for precise shut-off control. Whether handling high-temperature abrasive media or highly corrosive fluids, the hard seal ball valve delivers reliable performance, providing a solid foundation for fluid control in extreme service conditions.
Main Part Material
| Part Name | Material |
| Body | WCB, CF8, CF8M |
| Ball | CF8, CF8M |
| Stem | 2Cr13, F304, F316 |
| Seal | Cemented carbide STL, F304, F316 |
| Handle | Cast Steel |
Performance Specification
| Nominal Pressure (Mpa) |
Test Pressure (Mpa) | Suitable Medium | Working Temperature (℃) |
|
| Strength | Seal(Water) | |||
| 1.6 | 2.4 | 1.8 | Pulp, dust, and media containing various solid particles | -196~550 |
| 2.5 | 3.8 | 2.8 | -196~550 | |
| 4.0 | 6.0 | 4.4 | -196~550 | |
| 6.4 | 9.6 | 7.0 | -196~550 | |
Main Connection Dimensions
| Type | Nominal Diameter (mm) |
Dimensions (mm) | |||||||
| L | D | D1 | D2 | H | b-f | Z-φd | D0 | ||
| Q41H-16C Q41W-16P/R |
DN15 | 130 | 95 | 65 | 45 | 85 | 14-2 | 4-14 | 140 |
| DN20 | 140 | 105 | 75 | 55 | 90 | 14-2 | 4-14 | 140 | |
| DN25 | 150 | 115 | 85 | 65 | 99 | 14-2 | 4-14 | 150 | |
| DN32 | 165 | 135 | 100 | 78 | 105 | 16-2 | 4-18 | 180 | |
| DN40 | 180 | 145 | 110 | 85 | 126 | 16-3 | 4-18 | 200 | |
| DN50 | 200 | 160 | 125 | 100 | 140 | 16-3 | 4-18 | 250 | |
| DN65 | 220 | 180 | 145 | 120 | 165 | 18-3 | 4-18 | 300 | |
| DN80 | 250 | 195 | 160 | 135 | 178 | 20-3 | 8-18 | 350 | |
| DN100 | 280 | 215 | 180 | 155 | 230 | 20-3 | 8-18 | 500 | |
| DN125 | 320 | 250 | 210 | 185 | 280 | 22-3 | 8-18 | 800 | |
| DN150 | 360 | 285 | 240 | 210 | 310 | 24-3 | 8-23 | 800 | |
| DN200 | 400 | 340 | 295 | 265 | 350 | 26-3 | 12-23 | 1000 | |
| Q41H-25C Q41W-25P/R |
DN15 | 130 | 95 | 65 | 45 | 85 | 16-2 | 4-14 | 140 |
| DN20 | 140 | 105 | 75 | 55 | 90 | 16-2 | 4-14 | 140 | |
| DN25 | 150 | 115 | 85 | 65 | 99 | 16-2 | 4-14 | 150 | |
| DN32 | 165 | 135 | 100 | 78 | 105 | 18-2 | 4-18 | 180 | |
| DN40 | 180 | 145 | 110 | 85 | 126 | 18-3 | 4-18 | 200 | |
| DN50 | 200 | 160 | 125 | 100 | 140 | 20-3 | 4-18 | 250 | |
| DN65 | 220 | 180 | 145 | 120 | 165 | 22-3 | 8-18 | 300 | |
| DN80 | 250 | 195 | 160 | 135 | 178 | 22-3 | 8-18 | 350 | |
| DN100 | 280 | 230 | 190 | 160 | 230 | 24-3 | 8-23 | 500 | |
| DN125 | 320 | 270 | 220 | 188 | 280 | 28-3 | 8-25 | 800 | |
| DN150 | 360 | 300 | 250 | 218 | 310 | 30-3 | 8-25 | 800 | |
| DN200 | 400 | 360 | 310 | 278 | 350 | 34-3 | 12-25 | 1000 | |
| Q41H-40C Q41W-40P/R |
DN15 | 130 | 95 | 65 | 45 | 85 | 16-2 | 4-14 | 140 |
| DN20 | 140 | 105 | 75 | 55 | 90 | 16-2 | 4-14 | 140 | |
| DN25 | 150 | 115 | 85 | 65 | 99 | 16-2 | 4-14 | 150 | |
| DN32 | 180 | 135 | 100 | 78 | 105 | 18-3 | 4-18 | 180 | |
| DN40 | 200 | 145 | 110 | 85 | 126 | 18-3 | 4-18 | 200 | |
| DN50 | 220 | 160 | 125 | 100 | 140 | 20-3 | 4-18 | 250 | |
| DN65 | 250 | 180 | 145 | 120 | 165 | 22-3 | 8-18 | 300 | |
| DN80 | 280 | 195 | 160 | 135 | 178 | 22-3 | 8-18 | 350 | |
| DN100 | 320 | 230 | 190 | 160 | 230 | 24-3 | 8-23 | 500 | |
| DN125 | 360 | 270 | 220 | 188 | 280 | 28-3 | 8-25 | 800 | |
| DN150 | 400 | 300 | 250 | 218 | 310 | 30-3 | 8-25 | 800 | |
| DN200 | 550 | 375 | 320 | 282 | 350 | 38-3 | 12-30 | 1000 | |
| Q41H-64C Q41W-64P/R |
DN15 | 140 | 105 | 75 | 55 | 79 | 18-2 | 4-14 | 140 |
| DN20 | 160 | 125 | 90 | 68 | 83 | 20-2 | 4-18 | 140 | |
| DN25 | 180 | 135 | 100 | 78 | 114 | 22-2 | 4-18 | 200 | |
| DN32 | 200 | 150 | 110 | 82 | 120 | 24-2 | 4-23 | 200 | |
| DN40 | 220 | 165 | 125 | 95 | 125 | 24-3 | 4-23 | 250 | |
| DN50 | 250 | 175 | 135 | 105 | 156 | 26-3 | 4-23 | 300 | |
| DN65 | 280 | 200 | 160 | 130 | 172 | 28-3 | 8-23 | 350 | |
| DN80 | 320 | 210 | 170 | 140 | 220 | 30-3 | 8-23 | 500 | |
| DN100 | 360 | 250 | 200 | 168 | 250 | 32-3 | 8-25 | 650 | |
Hot Tags: hard seal ball valve, China hard seal ball valve manufacturers, suppliers, factory
You Might Also Like
Send Inquiry