SS High Performance Wafer Butterfly Valve - Worm Gear

25bar~64bar (2.5mpa~6.4mpa)

Product Advantages

icon Pinless Design: Key/square shaft connection eliminates pin loosening/breakage, ensures stability in high-frequency/vibration, reduces failures.

icon Bidirectional Sealing:Elastic seat + spherical disc seals bidirectionally (custom leakage class), blocks contamination/backflow.

icon 2-Ear Wafer:Compact design with bolt self-alignment for fast, precise installation with minimal errors.

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)

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

Testing Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1

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

Technical description

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Q&A

Specification of the Valve

Type of Connection	Wafer
Actuation	Worm Gear
Size	1 1/2in~112in (DN40~DN2800+)
Pressure	25bar~64bar (2.5mpa~6.4mpa)
Testing Pressure	450psi
Medium	Water/Oil/Air
Medium Temperature	-40℃~250℃

Material of the Valve

Body	CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ 1.4406
Disc	DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800
Stem	45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276
Soft Seat	EPDM/ NBR/ SIL/ FKM/ FPM/ VITON/ PTFE/ RPTFE/ HYPALON/ UHMWPE/ PEEK

THE SOURCE MANUFACTURER

Our core principles are built on material integrity, precision engineering, and decades of field-tested experience. This is how we deliver valves that perform reliably, year after year.

FOUNDRY-FIRST METALLURGY

Our roots are in casting. Led by a materials expert, we ensure every heat's chemical composition and treatment strictly conforms to ASTM/EN standards, guaranteeing predictable strength and corrosion resistance.

STANDARD-DRIVEN PRECISION

Our 11 CNC centers machine components to exact dimensional standards. This isn't just about a good fit; it's about ensuring perfect geometric alignment for reliable, repeatable sealing performance.

20+ YEARS OF PROVEN DESIGN

Our valve architectures are not theoretical. They have been refined and validated over two decades in the world's most demanding process plants, giving you unparalleled assurance of long-term reliability.

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Industries Served

The following are the representative application industries of this valve. Since butterfly valves can be applied to almost all industries (as long as the temperature and pressure are in line), many industries have not been listed.

Petrochemical & Chemical

The butterfly valve with worm gear features a turbine drive that ensures safe and smooth operation of large-diameter valves in explosion-proof areas, with a self-locking function to prevent misoperation. Its wafer design significantly reduces installation space and weight, lowering pipeline support and installation costs.

Power Generation Industry

Our high performance butterfly valve meets API 598 or GB/T 13927 Class D leakage rates at 6.4MPa pressure. In the governor oil system (high-frequency regulation) of a hydropower station, the JRVAL double eccentric butterfly valve’s maintenance cycle far exceeds that of the original valves.

Municipal Water Supply Industry

The precision double eccentric butterfly valve design allows for rapid, frictionless separation or low-friction contact between the disc and soft seat during opening/closing. This effectively protects the seat, reduces wear, and maintains excellent sealing performance even in networks containing small amounts of sediment or scale.

Marine/Shipbuilding Industry

JRVAL, as a high performance butterfly valve supplier, provides valve solutions for various vessels (e.g., cargo ships, oil tankers, LNG carriers, passenger ships, special engineering vessels). Product design and manufacturing processes are acceptable for inspection and certification by classification societies such as CCS, ABS, DNV, LR, BV, RINA, NK, KR.

Environmental Protection Industry

The SS316L material used in the high performance wafer butterfly valve performs excellently when handling industrial wastewater containing chloride ions and acidic flue gases. For slurries with solid particles, hardened discs or wear-resistant seats are available. JRVAL valves have been operating stably in the flue gas purification system (FGD/SCR) of a waste-to-energy plant for over 6 years with minimal corrosion and wear.

Food Processing Industry

The hp butterfly valve is made from food-grade stainless steel (typically SS316L), with highly polished internal and external surfaces (Ra≤0.8μm or better). Seats are made from food-grade EPDM/Silicone/PTFE materials compliant with FDA standards. The design features no dead corners, facilitating easy cleaning and sterilization (CIP/SIP).

Mining & Metals Industry

The eccentric butterfly valve (upgradeable to triple offset for severe abrasion) ensures rapid disc disengagement from the seat during opening/closing. This reduces sealing surface friction and scraping, effectively prevents slurry particles from jamming the valve, and lowers operating torque

Refrigeration Industry

The SS316L in the worm gear operated butterfly valve maintains good toughness even at -196°C. Special modified PTFE seats can be used from -100°C to +200°C. JRVAL valves have been operating stably on the liquid supply lines of a large ammonia refrigeration cold storage (-35°C environment) for over 7 years with no leakage records.

Desalination Industry

The unique bi-directional sealing design of the double eccentric butterfly valve allows it to withstand forward pressure (e.g., RO inlet) up to 25 bar (2.5MPa) and reverse pressure (e.g., system backwash, preventing concentrate/chemical backflow) up to 10 bar (1.0MPa). This ensures stable RO system operation and prevents cross-contamination and equipment damage.

Engineered For Any Environment

High-Temperature & High-Pressure Environments

The high performance valve features an inherent fire-safe design (API 609) and an anti-blowout stem, ensuring operational safety under extreme conditions.

Corrosive Environments

JRVAL, as a double eccentric butterfly valve supplier, can provide materials compliant with NACE MR0175 / ISO 15156 standards, suitable for sour service environments containing H₂S.

Abrasive Environments with Particles

JRVAL's double offset high performance butterfly valve with a tungsten carbide coated disc can extend service life by 5-10 times compared to standard stainless steel discs under similar wear conditions. Stellite hardfaced discs can extend life by 3-5 times.

Vibration Environments

JRVAL’s optimized stem connection and support design for the high performance butterfly valve allows it to withstand continuous industrial vibrations, with some designs capable of handling vibration accelerations up to 2G.

Space-Constrained Environments

The most significant advantage of the high performance wafer butterfly valve is its extremely short face-to-face dimension. For example, a JRVAL PN16 DN200 butterfly valve has a face-to-face length of approximately 60mm

Cryogenic Environments

JRVAL's cryogenic butterfly valve, featuring an eccentric butterfly valve design, achieves bubble-tight zero leakage (e.g., API 598 or ISO 5208 Rate A) at its design temperature. For helium leak tests, it can achieve ≤1x10⁻⁶ Pa·m³/s (per customer requirements).

Specific Application Solutions

Water Supply Systems

JRVAL's double offset butterfly valve, with its EPDM seat and double eccentric structure, can achieve over 50,000 switching cycles in clean water media, with some optimized designs reaching over 100,000 cycles.

Wastewater Treatment Systems

The JRVAL's butterfly valve eccentric type, due to its optimized disc movement path from the double eccentric structure, can reduce the probability of jamming and clogging by approximately 40-60% compared to concentric butterfly valves.

Semiconductor Ultrapure Water Systems

Mirror-polished (Ra≤0.2μm) high performance double offset butterfly valve meets SEMI F57 standards with zero deadleg design.

Fire Protection Systems

JRVAL, as one of the high performance butterfly valves manufacturers, can provide valves certified to API 609 or ISO 10497 fire tests, ensuring post-fire leakage meets standard requirements.

HVAC Systems

The precise flow regulation and near equal percentage flow characteristic of the JRVAL valve contribute to its excellent butterfly performance. Its adjustability ratio typically reaches 50:1 to 100:1, superior to concentric butterfly valves (usually 30:1), enabling finer temperature and flow control.

Fuel Gas Systems

The JRVAL's worm gear type butterfly valve offers low fugitive emissions, capable of meeting ISO 15848-1 BH C03 level (leakage rate ≤50 ppmv CH₄ at 200°C, 20,000 cycles) or API 624 requirements.

Our Certifications

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

High Performance in Action

Discover how JRVAL's high-performance valve solved a persistent and costly problem for a major LNG facility.

The Challenge

An LNG terminal was experiencing frequent failures in their cryogenic lines (-162°C). Competitor valves suffered from stem freezing, seat embrittlement, and through-leakage, forcing costly emergency shutdowns and posing a significant safety risk from flammable gas leaks. The high thermal cycling caused premature wear and loss of sealing integrity.

The JRVAL Solution

Our team specified a JRVAL High Performance Butterfly Valve with an extended bonnet, crafted from CF8M stainless steel. The double-offset design minimized torque, while the specialized cryogenic-rated PTFE seat maintained flexibility and sealing at extreme low temperatures. The extended bonnet successfully isolated the actuator and packing from freezing conditions.

"The JRVAL cryogenic valves have been flawless. We have achieved over 18 months of continuous, leak-free operation, completely eliminating the unplanned shutdowns we used to face. Their engineering expertise made all the difference."

— Lead Engineer, LNG Receiving Terminal

Carbon Steel Lug Butterfly Valve - Bare Stem

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High Performance Butterfly Valve Drawing

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Worm Gear Butterfly Valve FAQ

What operational advantages does the "pinless connection" provide for gear operator applications?

Our pinless construction ensures rigid, zero-backlash torque transmission from the gear operator to the disc. This is critical for large or high-pressure valves, eliminating stress points and preventing failures caused by pin shearing or loosening under high torque loads.

What seat materials are available, and what is their expected service life in mildly abrasive media?

We offer a range of high-performance seats selected based on ASTM standards:

• Glass-filled PTFE (RPTFE): Excellent chemical resistance.

• PEEK (Carbon-Reinforced): For temperatures up to 260°C.

• UHMWPE: Superior wear resistance for slurry services up to 80°C.

Expected life ranges from 50,000 to 100,000 cycles in moderate abrasion. Contact us for a precise wear rate calculation for your specific application.

What is the operating torque? Can a DN300 valve be manually operated by a single person?

Yes. Our high-efficiency gearboxes (≥92%) are optimized for easy operation. For a typical DN300 Class 150 valve, the breakaway torque is ≤350 N·m. Paired with a standard 800mm handwheel, this is well within the capability for single-person manual operation. Detailed torque charts are available.

What is the product warranty period and how is after-sales service handled?

We provide a standard warranty of 12 months from shipment or 18 months from commissioning. Our comprehensive after-sales support includes:

• 24/7 technical support

• Field troubleshooting & on-site maintenance

• Critical spares inventory with guaranteed response times

Are certifications like SIL ratings or special equipment licenses available?

Yes. Our quality system is ISO 9001:2015 certified with PED 2014/68/EU compliance. We can provide product lines certified to meet specific standards like IEC 61508 (SIL), ASME B16.34, API 609, and TSG as required by your project

OUR SERVICE & GUARANTEE

Free Samples

Compare our quality against any brand. We're confident you'll choose JRVAL after an in-depth evaluation of our sample products.

2-30 Year Warranty

We stand by our craftsmanship. Enjoy a comprehensive warranty covering non-human damage, with spare parts readily available.

Verified Quality

Every shipment is backed by comprehensive documentation, including material test reports (MTR), heat treatment reports, and mechanical performance tests.