Explosion-Proof Ball Valves for Hazardous Locations

In oil & gas, petrochemical, chemical, gas station, pharmaceutical and flammable fluid processing industries, pipelines often carry flammable gas, volatile liquid and explosive medium. Ordinary actuated ball valves cannot meet site safety standards, while explosion-proof ball valves are specially engineered to prevent electric spark ignition, eliminate explosion risks and ensure stable fluid control in classified dangerous working areas.

Kinko explosion-proof ball valves strictly follow international explosion-proof specifications, covering manual, electric and pneumatic types, widely used in Zone 1, Zone 2 and other hazardous locations, becoming the preferred safety valve solution for global B2B industrial purchasers.

What Is Explosion-Proof Ball Valve

An explosion-proof ball valve is a complete fluid control assembly composed of ball valve body plus explosion-proof actuator. Its core design is to isolate internal electric components from external flammable medium. Even if internal circuit generates electric spark or high temperature, it will not leak out to ignite surrounding explosive gas mixture, effectively avoiding fire and explosion accidents.

It integrates fast on-off performance of ball valves and professional explosion-proof safety performance, realizing remote automatic control and local manual emergency operation at the same time.

Core Explosion-Proof Grade Explanation

Common temperature class:

• T4: Max surface temperature ≤135℃

• T6: Max surface temperature ≤85℃, suitable for more easily ignited substances

Main Structure & Classification

1. By Driving Mode

Electric Explosion-Proof Ball Valve

• Equipped with explosion-proof electric actuator, support 24V DC, 110V AC, 220V AC, 380V AC power supply

• Realize remote opening/closing, signal feedback, on-off and regulating type optional

• Suitable for unattended pipeline system, automatic process pipeline

Pneumatic Explosion-Proof Ball Valve

• Matched with explosion-proof solenoid valve and pneumatic actuator

• Driven by compressed air, fast response, stable operation

• Low failure rate, suitable for high-frequency switch working condition

Manual Explosion-Proof Ball Valve

• Simple explosion-proof hand wheel structure, safe local operation

• Low cost, convenient maintenance, used for branch pipeline emergency cut-off

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2. By Connection Type

Flanged, wafer, threaded, butt weld end types are all available, consistent with Kinko standard ball valve specifications, easy for pipeline unified matching.

Technical Parameter Comparison Table

Body Material & Seal Configuration

Valve Body Material

• WCB Carbon Steel: Suitable for conventional oil, gas and general flammable medium

• CF8(304) / CF8M(316) Stainless Steel: Corrosion-resistant chemical medium, acid-base flammable fluid

• Low temperature steel: Low-temperature liquefied gas pipeline working condition

Common Seal Material

• PTFE: Normal temperature flammable liquid, good corrosion resistance

• RPTFE: Wear-resistant medium, improve service life

• Metal to Metal Seal: High temperature, high pressure flammable steam and heavy-duty medium

Core Advantages of Kinko Explosion-Proof Ball Valves

1. Strict explosion-proof certification, fully compliant with global hazardous area access standards, easy for project inspection and customs clearance

2. Integrate full bore flow path, small fluid resistance, fast 90-degree switch, no medium retention

3. Double sealing design, excellent bubble-tight shutoff performance, effectively prevent flammable medium leakage

4. ISO5211 standard top mounting platform, convenient to replace and match various brand explosion-proof actuators

5. Wide pressure range PN16-PN40, complete size DN15-DN200, meet different pipeline calibre demands

6. Anti-static structure design, export static electricity generated by medium friction, avoid static explosion risk

7. Fire safe structure optional, keep sealing performance temporarily in sudden fire accident

Typical Application Industries

• Petroleum & Natural Gas: Oil gathering pipeline, gas transmission pipeline, oil depot storage system

• Petrochemical Industry: Refining pipeline, flammable chemical reaction pipeline

• New Energy Industry: Hydrogen energy pipeline, biogas conveying system

• Energy & Power: Gas-fired power plant fuel supply pipeline

• Urban Municipal Engineering: Urban gas pipeline, gas station oil supply system

• Pharmaceutical & Fine Chemical: Volatile solvent production and conveying pipeline

Installation & Usage Notes

1. Select matched explosion-proof grade according to on-site dangerous area classification, do not use low-level products beyond limit

2. Professional staff must complete explosion-proof wiring construction, keep wiring cavity sealed completely

3. Regularly check actuator sealing condition and cable aging degree in daily maintenance

4. Avoid long-term over pressure and over temperature operation, follow product rated parameter range

5. When used outdoors, choose rainproof and dustproof explosion-proof model to extend service life

How to Select Right Explosion-Proof Ball Valve

1. Confirm on-site hazardous zone level and required explosion-proof mark first

2. Confirm medium type, temperature, working pressure and pipe diameter

3. Determine control mode: electric remote control or pneumatic on-site control

4. Select body material according to medium corrosion degree

5. Match end connection way consistent with original pipeline

6. Confirm whether fire safe, anti-static and other additional functions are needed

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Ivan (Mobile:+86-18968769287)
          WhatsApp：+86-13579991606

Wechat:+86-18968769287

Website： www.kinko-flow.com
ZHEJIANG KINKO FLUID EQUIPMENT CO.,LTD