API609 Fireproof High Performance Wafer Butterfly Valve

20bar~100bar (Class 150~Class 600）

Product Advantages

icon Versatile Sealing Solutions: Offered with soft (PTFE/RPTFE), solid metal, and API 609 certified fire-safe seats to meet a wide range of application and safety requirements.

icon Blowout-Proof Stem Design: A robust stem design ensures safety and reliability, especially in high-pressure services

icon Premium Materials: MTC certificates + PMI testing ensure material authenticity and compliance.

Standards and Certifications

Design and Manufacture: ASME B16.34; ASME VIII; API 609

Leakage Class: API 598 (Bi-directional Zero Leakage); ISO 5208 Rate A, FCI 70-2 Class V/VI

Side Flange Standards: ANSI 125LB/ 150LB/ 300LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16/ PN25/ PN64; GB; GOST; HG/T; JIS 5K/ 10K/ 16K

Top Flange (Actuator Mounting) : ISO 5211; GB 90°

Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 558-1; API 609

Firesafe & Pressure Testing : API609; API 598; EN 12266-1; BS 6755-2

Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；

Technical description

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Q&A

General Specifications

Design	Double Eccentric, High Performance
Connection Type	Wafer
Size Range	2" ~ 60" (DN50 ~ DN1500)
Pressure Class	ANSI Class 150 / 300 / 600
Actuation	Worm Gear, Electric, Pneumatic
Medium	Water, Oil, Gas, Steam, Corrosive Fluids

Material Specifications

Body	A105, WCB, LCB, CF8, CF8M, CF3, CF3M, SS, Duplex Steel (2205, 2507), 1.4529
Disc	WCB+Ni, DI, CF8, CF8M, CF3, CF3M, Duplex Steel (2205, 2507), Hastelloy (HC276), Monel, Bronze (C95400/C95800)
Stem	45#, SS410, SS416, SS420, SS304, SS316, SS316L, 17-4, 2205, 2507, 1.4529, K500, CF8, CF8M, HC276

Soft Seat

Material PTFE / RPTFE / UHMWPE
Temp. Range -40℃ to +200℃
Key Feature Bubble-tight shutoff at low/mid temps.
Shutoff Class Zero Leakage (API 598)

Metal Seat

Material Laminated or Solid Metal
Temp. Range -40℃ to +425℃
Key Feature High temp, abrasive media, long life.
Shutoff Class Zero Leakage or ANSI V/VI

Fire-Safe Seat

Material Primary: RPTFE, Secondary: Graphite/Metal
Temp. Range Meets API 607 After Fire
Key Feature Zero leakage in normal operation, seals after fire.
Shutoff Class Zero Leakage (Normal)

THE SOURCE MANUFACTURER

For over 20 years, our reputation has been built on a foundation of deep material expertise and precision engineering. We control the entire process, from raw casting to final assembly, ensuring every valve meets our uncompromising standards.

FOUNDRY-LEVEL MATERIAL CONTROL

Founded by a casting expert, we guarantee material integrity. We use PMI testing to verify alloys, ensuring every butterfly valve casting strictly adheres to ASTM/EN standards for optimal performance and longevity.

PRECISION CNC MACHINING

Our state-of-the-art CNC centers ensure every component's dimensions are machined to exact specifications. This precision is critical for the perfect fit and flawless operation of the butterfly valve assembly, guaranteeing reliability.

PROVEN RELIABILITY & DESIGN

With two decades of field validation, our valve designs are not just theoretical; they are proven to be rational and reliable. This extensive experience means our products deliver consistent, trustworthy performance in real-world conditions.

Challenge & Goals

CHALLENGE:

A refinery's flare gas system required an isolation valve that would leak at high operational temperatures, creating a constant fire hazard and product loss.

MEDIUM:

Hydrocarbon gas at 350°C, with potential for emergency temperature spikes and immediate fire risk.

GOAL:

Achieve zero-leakage isolation under high heat and guarantee the valve remains sealed during and after a potential fire event to prevent catastrophic failure.

Our Solution & Results

SOLUTION:

Deployed an API 609 butterfly valve with a fire-safe seat (RPTFE + Graphite). Body cast from A216-WCB with specialized heat treatment to ensure dimensional stability at elevated temperatures.

PERFORMANCE:

The double eccentric design minimized seat friction, achieving bubble-tight shutoff (ISO 5208 Rate A) in normal operation. It successfully passed API 607 fire-safe testing.

RESULT:

Eliminated the persistent leak, drastically increasing plant safety. The client has specified our valves for all future high-temperature critical isolation points.

"We replaced a failing gate valve with JRVAL's fire-safe butterfly valve. 18 months of continuous operation, zero pressure drop, zero leakage. This isn't just a valve; it's plant reliability."

— Lead Safety Engineer, Coastal Refinery Project

ENGINEERED FOR EXTREME DUTY

Our API 609 valve is not a general-purpose component. It is a specialized solution where temperature, pressure, and safety are non-negotiable.

Petrochemical & Refining

For flare gas lines and hydrocarbon processing, our high temperature butterfly valve is critical. We use ASTM A216 WCB castings with controlled post-weld heat treatment to prevent embrittlement and ensure sealing integrity during thermal cycling.

Power Generation

In high-pressure steam and turbine exhaust systems, the double eccentric butterfly valve design minimizes seat wear. Our robust metal-to-metal seating option provides reliable shutoff in conditions too severe for soft-seated valves.

Steel & Metallurgy

For furnace gas and cooling water lines, the rugged construction is paramount. Our wafer type butterfly valve offers a compact, easy-to-install solution, while our solid metal seat options withstand the abrasive particulates common in steel mills.

Oil & Gas Midstream

The butterfly valve oil and gas industry applications demand API 607 compliance. Our fire-safe design ensures pipeline isolation points remain secure during emergencies, a requirement for compressor stations and storage terminals.

District Heating & Energy

For high-temperature thermal oil and superheated water lines, a standard valve is a point of failure. The hard seal butterfly valve provides long-term, maintenance-free operation, preventing costly system shutdowns.

Pulp & Paper

In steam lines, liquor recovery, and chemical dosing, reliability is key. Our pn16 butterfly valve with a duplex stainless steel body offers superior corrosion resistance and the mechanical strength to handle demanding process conditions.

Chemical Processing

When handling aggressive chemicals at high temperatures, material selection is everything. We specify a hastelloy valve body or disc, leveraging our foundry expertise to ensure the correct alloy composition for maximum chemical compatibility and safety.

Exhaust Gas Treatment

In systems like ship scrubbers or industrial incinerators, valves must handle hot, corrosive gases. The double offset butterfly valve geometry, combined with a robust metal seat, ensures a tight seal and long life despite the harsh environment.

QUALITY & COMPLIANCE CERTIFIED

Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.

ISO 9001 Certification for butterfly valve manufacturing

CE PED Certification for pressure equipment

BV Marine Certification for shipbuilding valves

API609 Fireproof High Performance Wafer Butterfly Valve

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High Performance Butterfly Valve Drawing

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What does "Fire-Safe Certified" actually mean?

It's a life-saving dual-seal design. A primary soft seal provides zero leakage in normal use. If it fails in a fire, a secondary metal or graphite seal automatically engages to contain the hazard. Our valves are fully certified to the API 607 standard to guarantee this performance.

Why is a "Double Eccentric" design better?

The disc pivots away from the seat instead of rubbing against it. This simple change drastically reduces friction, which means longer valve life, more reliable sealing, and the ability to use smaller, more efficient actuators. It's the superior choice for any high-performance application.

How does being a source factory benefit me?

It means we control quality from the raw metal to the final product. You get guaranteed material integrity (verified by us), full traceability for compliance, and the engineering flexibility to create custom valve solutions for your specific operational challenges.

Can you handle custom material requests?

Yes, this is our specialty. We engineer solutions for difficult environments. Provide your operational parameters (medium, temperature, pressure), and our team will specify and manufacture a valve with the ideal materials, from Duplex and Hastelloy to specialized seat compounds.