Chain Operated Butterfly Valve - Wafer Type

1.5in~48in; PN6~PN20 (Class125~150)

Home / Wafer Butterfly Valve / Chain Operated Butterfly Valve - Wafer Type

Product Advantages

icon Safe & Effortless Remote Operation | Direct-from-Source Manufacturer |

icon Superior Material Composition: Our valves are cast with chemical compositions at the highest end of international standards. For example, our ASTM A351 CF8 stainless steel contains 9% Nickel—the maximum allowable—to ensure superior corrosion resistance and extended service life

Standards and Certifications

Design and Manufacture: API 609, AWWA C504, EN 593, DIN 3354, JIS B2032.

Leakage Class: API 598 (Bi-directional Zero Leakage)

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

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

Download

Q&A

Specification of the Valve

Type of Connection	Wafer Type
Actuation	Chainwheel / Chain Operated Gear
Size Range	2in ~ 48in (DN50~DN1200)
Pressure Rating	PN10 / PN16 / Class 150 / JIS 10K
Testing Standard	API 598 / ISO 5208 (Zero Leakage)
Medium	Water, Oil, Gas, Chemicals, Seawater, etc.
Operating Temp.	-20℃ ~ +180℃ (Depends on seat material)

Material Configuration

Body	Stainless Steel: CF8 (SS304), CF8M (SS316), CF3M (SS316L) Duplex Steel: 2205, 2507 (For high corrosive media)
Disc	Stainless Steel: CF8, CF8M, CF3M Alloy: Duplex 2205, Super Duplex 2507, Hastelloy, Aluminum Bronze
Shaft / Stem	Stainless Steel: SS410, SS420, SS304, SS316, 17-4PH
Seat (Liner)	Elastomer: EPDM, NBR, FKM (Viton™) Fluoropolymer: PTFE, PFA Lined
Chainwheel	Cast Iron, Ductile Iron, or Stainless Steel (with Galvanized or SS Chain)

High-Density Casting for Butterfly Valve

High-Density Casting: Zero Porosity Guaranteed

Our butterfly valve stainless bodies are produced from a high-density casting process. This ensures a solid, non-porous structure, completely free from sand holes and other casting defects. The result is superior strength and maximum durability.

Learn More About Our Process

Optimal Applications for Chain Operation

Chainwheel operators provide safe, reliable, and precise control for valves installed in hard-to-reach or elevated piping systems. Our stainless steel design ensures longevity in these critical industrial sectors.

Chemical Processing

Chemical plants often route pipelines overhead to save floor space. The stainless steel body resists corrosive fumes, while the chainwheel allows operators to safely isolate flows without scaffolding.

Power Generation

Perfect for large cooling water lines and boiler auxiliary systems located high up in facility structures. The anti-slip chain guide ensures reliable torque transmission even in vibrating environments.

Water & Wastewater

In municipal pump stations, large-diameter wafer valves are often suspended in vertical pipe galleries. Chain operation makes routine flushing and maintenance tasks accessible from the floor.

Pulp & Paper Mills

The wafer design saves space in congested mill pipe networks. The stainless steel construction prevents media contamination, and the chain wheel simplifies the management of overhead stock lines.

Marine & Shipbuilding

Ship engine rooms and overhead deck lines benefit immensely from chain actuation. The SS316 body option provides excellent resistance to harsh saline environments and constant vibration.

HVAC & District Cooling

For large-scale commercial cooling systems, chain-operated valves are mounted near the ceiling to isolate chillers. The tight shutoff ensures energy efficiency without risking operator safety.

Machining for Massive Wafer Valves

Using Heavy-duty Vertical Turret Lathes (VTL), we machine the inner bore and flange faces to ensure concentricity and Bi-directional zero leakage.

The top flanges are precisely bored and drilled according to ISO 5211 standards, preventing any torque offset during actuator operation.

Casting Quality & Inspection

Third-Party NDT for Wafer Butterfly Valve Castings

The reliability of a wafer butterfly valve starts with the quality of its cast components. This video documents part of JRVAL's casting production process, from shell preparation and metal pouring to the finished as-cast components.

For projects requiring independent quality verification, JRVAL can arrange third-party non-destructive testing (NDT) for wafer butterfly valve bodies and other cast components, in accordance with applicable standards, agreed inspection scopes and customer requirements.

MT — Magnetic Particle Testing

Used to detect surface and near-surface discontinuities in suitable ferromagnetic valve body and disc materials.

PT — Liquid Penetrant Testing

Used to reveal surface-breaking discontinuities on suitable non-porous metallic valve components.

RT — Radiographic Testing

Used to examine internal casting discontinuities in wafer butterfly valve bodies and other cast components, where applicable.

UT — Ultrasonic Testing

Used to examine internal discontinuities in suitable cast components, subject to material properties and geometry.

The applicable testing method, inspection extent and acceptance criteria depend on the component material, casting geometry, applicable specifications and project requirements.

Discuss Inspection Requirements

MANUFACTURING CAPABILITY / CNC MACHINING

Precision CNC Machining for High-Performance Butterfly Valves

Precision matters where components meet.

In high-performance butterfly valves, critical features — including shaft bores, disc-to-shaft interfaces and mounting faces — must meet specified tolerances for accurate fit and assembly.

APPLICATIONS WITH DEMANDING MACHINING REQUIREMENTS

From defence and naval equipment to aerospace and precision industrial systems, applications with tight dimensional tolerances call for accurately machined, repeatable components.

What CNC Machining Delivers

Accuracy Controlled critical dimensions

Repeatability Consistent machining results

Component Fit Reliable component assembly

Quality & Reliability

A Low Price Can Save Today. What About Tomorrow?

A recent conversation with an agricultural irrigation buyer reminded us that when valves fail, the real cost goes far beyond the purchase price. Replacement, labor, project delays, and accountability all matter.

What to Look for in a Butterfly Valve Supplier

4 KEY POINTS

Material Traceability

Verified material grades and traceable EN 10204 Type 3.1 inspection certificates.

Verifiable Testing

Actual pressure and leakage tests with defined procedures and documented results.

Dimensional & Functional Inspection

Critical dimensions, assembly accuracy and operating performance checked before delivery.

Warranty & After-Sales Support

Clear warranty terms, documented product records and accountable technical support.

Inside Our Factory

02:00 MIN

A closer look at our actual factory pressure testing process and quality checks before delivery.

Quality Should Be Demonstrated, Not Just Promised.

QUALITY & COMPLIANCE CERTIFIED

Stainless Steel Chain Operated Butterfly Valve - Wafer Type

Ready to configure for your high-elevation piping project?

Get A Free Quote

Butterfly Valve Dimensions

Download

Sample MTC (EN 10204 3.1) - Material Traceability

Download

Chain Operated Butterfly Valve: Technical FAQs

Why choose a chain operated butterfly valve over a standard handwheel or lever?

Chainwheel operators are specifically designed for safety and convenience in hard-to-reach or high-elevation piping systems:

Operator Safety: Eliminates the dangerous need for scaffolding or ladders. Operators can safely open, close, or throttle valves from the factory floor.
Precise Control: The integrated worm gear mechanism provides a high mechanical advantage, ensuring smooth and effortless operation even on large-diameter valves under high pressure.
Anti-Slip Design: Equipped with a robust chain guide that prevents the chain from derailing or slipping during operation.

How does JRVAL's 20 years of integrated manufacturing guarantee product reliability?

As a true source factory integrating casting, machining, and assembly, we do not rely on third-party components that compromise quality:

In-House Casting: Our high-density casting process ensures stainless steel bodies (CF8/CF8M) are completely free from porosity and sand holes, maximizing structural integrity.
End-to-End Quality Control: From PMI (Positive Material Identification) of raw materials to CNC precision machining, every step is rigorously monitored under ISO 9001 standards.
Cost-Effective Pricing: By eliminating middlemen, we provide premium, market-verified valves directly to you at competitive factory-direct prices.

What fluid media and industries are these chainwheel valves suitable for?

Thanks to its highly customizable seat (EPDM/PTFE/NBR) and durable stainless steel body, this valve handles a wide spectrum of media:

Applicable Media: Industrial water, wastewater, oil, gas, seawater, and highly corrosive chemical acids/alkalis.
Prime Industries: Widely adopted in Chemical Processing, Power Generation (boiler auxiliary lines), Water Treatment facilities, and Pulp & Paper mills where overhead piping is standard.
Zero Leakage Guarantee: Proven bi-directional tight shut-off, ensuring absolute safety for hazardous or valuable media.

Can the chain length be customized, and what global flange standards do you support?

Yes, our extensive 20-year manufacturing experience allows for full OEM/ODM flexibility:

Custom Chain Length: We provide galvanized or stainless steel chains cut precisely to match your pipeline's elevation, ensuring the operating loop rests at the ideal ergonomic height.
Universal Flange Compatibility: The wafer body design seamlessly installs between flanges drilled to ANSI B16.5 Class 150, DIN PN10/PN16, and JIS 5K/10K standards.
Strict Testing: Every unit undergoes rigorous API 598 pressure testing before leaving our factory, guaranteeing immediate deployment upon delivery.