Hard Sealed Ball Valve
Product Overview
The Hard Sealed Ball Valve is engineered for demanding industrial applications that require high sealing performance, durability, and resistance to high temperature and corrosion. It adopts a metal-to-metal sealing structure with a floating or fixed ball design, offering excellent fireproof and antistatic properties. With compact structure, low torque, and reliable shut-off, it is ideal for harsh environments in petrochemical, electric power, metallurgy, and other high-pressure, high-temperature systems.
Key Features
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Metal-to-Metal Seal: Ensures excellent sealing under high temperature and pressure.
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Self-Tightening Design: The structure uses plate springs or cylindrical springs to maintain consistent sealing force.
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Low Torque Operation: Designed for low friction, easy manual or automatic actuation.
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Fireproof & Antistatic: Ensures safety in flammable or explosive environments.
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Long Service Life: Hard seal surface resists wear and ensures extended operation time.
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Flexible Drive Modes: Available in manual, worm gear, pneumatic, and electric actuation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal Diameter (DN) | 15 – 200 mm / ½” – 8″ |
| Pressure Rating | PN1.6 – 4.0 MPa |
| Temperature Range | -28°C ~ 400°C |
| Driving Method | Manual, Worm-wheel, Pneumatic, Electric |
| Applicable Media | Water, Steam, Oil, Acid, Alkali, Carbon Powder |
| Design Standard | GB12237 |
| Size Standard | JB79, GB9113, HG20592 |
| Structure Standard | GB12221 |
| Inspection & Test | GB / T13927, JB / T9092 |
Materials for Main Parts
| Part Name | Code | C | P | R |
|---|---|---|---|---|
| Body | – | WCB | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti |
| Ball | – | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| Stem | – | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti |
| Sealing Ring | – | Special hardening material | ||
| Packing | – | Carbon fibre / PTFE / Graphite |
Main Dimensions & Weight Table (Selected Models)
| DN | L | D | D1 | D2 | b | Z-Φd | H (Manual) | H (Electric) | D0 |
|---|---|---|---|---|---|---|---|---|---|
| 15 | 130 | 95 | 65 | 45 | 14 | 2-Φ14 | 60 | 200 | 345 |
| 25 | 150 | 115 | 85 | 65 | 16 | 2-Φ14 | 80 | 230 | 390 |
| 50 | 180 | 165 | 125 | 100 | 18 | 4-Φ18 | 150 | 295 | 490 |
| 80 | 220 | 200 | 160 | 135 | 20 | 4-Φ18 | 230 | 370 | 600 |
| 100 | 250 | 220 | 180 | 155 | 22 | 8-Φ18 | 270 | 415 | 700 |
| 150 | 360 | 280 | 240 | 210 | 24 | 8-Φ23 | 340 | 542 | 850 |
Functions & Benefits
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Metal-Hard Seal: Ideal for systems with erosion, corrosion, and high-temperature demands.
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Wide Medium Compatibility: Works with water, oil, steam, acids, alkalis, and even powder or solid particles.
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Low Operating Torque: Smooth rotation mechanism allows easy opening/closing.
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Multiple Actuation Options: Suitable for various automation scenarios.
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Explosion Protection: Anti-static and fireproof functions ensure operational safety.
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Leak-Free Performance: Designed for zero leakage under rated pressure.
Applications
The hard sealed ball valve is widely used in:
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Petrochemical Industry: For oil, gas, and high-temperature fluid transportation.
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Electric Power Plants: In high-pressure steam and feedwater systems.
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Metallurgy and Mining: For control of abrasive or high-solids content media.
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Chemical Processing: In corrosive media flow control systems.
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Pulp & Paper Industry: Handles solid-laden, high-temperature flows effectively.
