Teflon Lined Butterfly Valve Manufacturers

Double Eccentric Butterfly Valve Supplier

Wholesale Stainless Steel Butterfly Valve

SS High Performance Wafer Butterfly Valve - Bare Stem

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	Round / Square Head
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.

High Performance Butterfly Valve Factory

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

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.

Oil & Petrochemical Industry

The high performance double offset butterfly valve demonstrates excellent corrosion resistance in sulfur-containing crude oil and acidic water environments, with PTFE seats capable of withstanding media up to 200°C. In a petrochemical plant’s catalytic cracking unit, these valves have operated stably in sulfur-containing wastewater treatment for over five years without significant corrosion.

Power Generation Industry

The double offset butterfly valves feature a precision dual eccentric design, enabling rapid low-friction contact/separation between the disc and soft seat during operation. This minimizes wear and extends service life, making them ideal for large-diameter, high-cycle water systems in power plants.

Municipal Water Supply Industry

The double offset butterfly valve combines corrosion-resistant stainless steel with food-grade soft seals, preventing secondary contamination of potable water. This ensures safe and hygienic drinking water delivery in municipal water systems.

Marine/Shipbuilding Industry

SS316L exhibits a Pitting Resistance Equivalent Number (PREN) in seawater significantly higher than ordinary stainless steels; Duplex stainless steels, with a PREN value >35, are even more suitable for harsh marine environments. Our hpbv has obtained certifications from classification societies such as CCS, ABS, DNV, and LR.

Environmental Protection Industry

The high performance butterfly valves provide long-term reliable bubble-tight shutoff, effectively preventing hazardous gas/liquid leaks to meet strict environmental emission standards.

Food Processing Industry

The butterfly valve double offset employs a precision dual eccentric structure, minimizing physical damage to food materials (e.g., fruit pulp beverages, cream, sauces) by reducing friction during operation.

Metallurgical Industry

The China double offset butterfly valve is specifically designed for slurry applications with bidirectional sealing capability. It maintains tight closure under pressure fluctuations (forward: 25 bar/2.5 MPa, reverse: 10 bar/1.0 MPa).

High Performance Butterfly Valves Manufacturers

Refrigeration Industry

JRVAL, as one of high performance butterfly valve manufacturers supply a comprehensive range from DN40 to DN5000+, covering all refrigeration system requirements. Material selection can be customized based on refrigerant type and operating conditions.

Double Eccentric Butterfly Valve Suppliers China

Seawater Desalination Industry

This sector demands valves capable of handling highly corrosive, high-chloride environments. For such applications, JRVAL, as one of double eccentric butterfly valve suppliers china, provides solutions featuring construction from materials like SS316L and Duplex stainless steel (PREN > 35 for superior pitting resistance) for exceptional durability.

Engineered For Any Environment

High-Temperature & High-Pressure Environments

For demanding high-temperature, high-pressure environments, the answer to what is double eccentric butterfly valve lies in its performance: utilizing high-strength materials like 17-4PH for the stem (>900MPa tensile strength) to guarantee no deformation or fracture. The valve body materials are also certified and traceable to match the specific medium temperature.

Corrosive Environments

Even in highly corrosive media, JRVAL helps you understand what is a double offset butterfly valve by delivering API 598 Class VI / ISO 5208 Rate A bubble-tight zero leakage, achieved through precision machining and carefully selected premium sealing materials.

Abrasive Particle Environments

In Abrasive Particle Environments, while the broader double eccentric vs triple eccentric butterfly valve discussion often centers on sealing for critical services, JRVAL’s dual-offset design offers an inherent advantage: its closing mechanism allows the disc to progressively contact the seat, reducing particle embedding, and its quick-release opening lowers jamming risk by approximately 50% compared to concentric types.

Vibration Environments

In Vibration Environments, JRVAL employs precision pin-key or spline connections. This construction ensures the double offset valve disc and stem remain securely fastened without wobbling under high-frequency vibrations, guaranteeing precise actuation and operational integrity.

Space-Constrained Environments

Compared to traditional gate or globe valves, the JRVAL's double offset wafer butterfly valve provides exceptional space savings, reducing the required axial installation footprint by up to 80-90%, making it ideal for compact designs.

Low-Temperature Environments

As a premier double eccentric butterfly valve china supplier, JRVAL’s design for cryogenic applications features an optimized extended bonnet. This element keeps the packing gland and actuator away from the low-temperature media, preventing hardening or freezing to ensure reliable operation and sealing, with the packing area temperature maintained above 0°C.

Specific Application Solutions

Water Supply Systems

In the ongoing concentric vs eccentric butterfly valve comparison for water supply systems, JRVAL’s dual-offset design proves superior by reducing operating torque by 20-30%. This makes manual operation of large-diameter valves easier and allows for smaller, more economical actuators.

Wastewater Treatment Systems

In wastewater treatment, the double eccentric butterfly valve meaning is truly demonstrated by its practical performance: an anti-clogging internal cavity design minimizes dead zones to prevent sludge accumulation, while a reinforced stem sealing system protects against external leakage and corrosion from sewage.

Semiconductor Ultrapure Water Systems

For semiconductor ultra-pure water systems, the JRVAL's double eccentric butterfly valve guarantees purity. Its crevice-free design, combined with high-grade materials like polished CF8M and PTFE seats, prevents particle generation and contamination to maintain absolute system integrity.

Fire Protection Systems

A critical strength of the high performance butterfly valves is its rapid response in emergencies. When paired with a quick-acting actuator, the JRVAL emergency shut-off butterfly valve achieves closing times of just 1-5 seconds, depending on the valve size and actuator type, ensuring swift, reliable isolation.

HVAC Systems

When evaluating a high performance butterfly valve vs butterfly valve for HVAC systems, JRVAL’s hpbv excels with a Cv value 30-50% higher than equivalent seat valves. This superior flow capacity significantly reduces pump head loss and delivers remarkable energy savings.

Gas Systems

As detailed in our double offset butterfly valve catalogue, JRVAL strictly implements a robust anti-static design for gas systems. This ensures the electrical resistance between the stem-body and stem-disc is ≤10 Ohms, a safety margin far exceeding the industry standard of 1 kΩ for preventing static discharge.

QUALITY & COMPLIANCE CERTIFIED

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

SS High Performance Wafer Butterfly Valve - Bare Stem

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High Performance Butterfly Valve Drawing

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High Performance Butterfly Valve FAQ

How is your "pinless structure" achieved? Is it truly more reliable than traditional pin connections?

Our pinless design connects the stem and disc via precision-matched square or splined interfaces. This creates an integrated structure that distributes force uniformly, completely eliminating risks of pin shearing, corrosion, or loosening. It is significantly more reliable than pinned designs, especially in high-frequency or high-vibration applications.

What does the "headless" design mean? Will it affect actuator installation?

"Headless" simply means the valve is supplied ready for automation, without a manual operator like a handwheel. It features a standardized ISO 5211 mounting platform, ensuring direct, seamless, and perfectly compatible installation with pneumatic or electric actuators from any brand.

How do you guarantee that valve materials meet our required corrosion-resistant steel specifications?

We guarantee material compliance with strict quality control. Every valve is supplied with its original Material Test Certificate (MTC), and we support third-party Positive Material Identification (PMI) testing for absolute verification. Our entire process is built on adherence to your exact specifications.

Can the valve seat be replaced separately if worn out? Is the process convenient?

Yes, the valve seat is fully replaceable to extend the valve's service life. While the process is straightforward, we recommend it be performed by trained personnel to ensure perfect post-replacement sealing. We are happy to provide detailed guidance or on-site service support if needed.

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.