Wholesale Stainless Steel Butterfly Valve

Heavy-Body™ Stainless Steel Wafer Type Butterfly Valve - Bare Shaft

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

Product Advantages

icon Robust Construction: Features a heavy-walled body that significantly exceeds the thickness requirements of standards like HG/T 3704, ensuring superior structural integrity and an enhanced safety margin for demanding applications.

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: GB/T 12238-1989; GOST 12815-1980; GOST 5263-1975

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

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Q&A

Specification of the Valve

Type of Connection	Wafer
Actuation	Round/ Square Head
Size	1 1/2in ~ 48in (DN40~DN1200)
Pressure	6bar~20bar (0.6mpa~2.0mpa)
Testing Pressure	256psi
Medium	Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc.
Medium Temperature	-25~180℃

Material of the Valve

Body	• Stainless Steel: CF8 (304/JS1030), CF8M (316), CF3 (304L), CF3M (316L) • Duplex & Special Alloys: CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), 1.4529 (926), CN7M (Alloy 20)
Disc	• Stainless Steel: CF8 (304/JS1030), CF8M (316), CF3 (304L), CF3M (316L) • Duplex, Bronze & Special Alloys: CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), Aluminum Bronze (C95400/C95800), CW6MC (Hastelloy C-276 eq.)
Shaft	• Stainless Steel (Bar Stock): SS304, SS316, SS316L, SS410, SS420 • High-Strength & Corrosion Resistant (Bar Stock): 17-4PH (SS630), Duplex 2205 (S32205), Super Duplex 2507 (S32750), Monel K500, Hastelloy C-276
Soft Seat	• Elastomers: EPDM, HTEPDM, NBR (Buna-N), FKM (Viton™), Silicone (VMQ) • Plastics: PTFE, UHMWPE, PFA

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

ENGINEERED FOR VERSATILE FLOW CONTROL

We manufacture high-performance stainless steel wafer butterfly valves designed for reliability, cost-effectiveness, and seamless automation. Our control over the entire process, from quality casting to precision machining and final assembly, ensures a compact and efficient solution for diverse industrial needs.

Foundry-Level Material Control

Founded by casting experts, we guarantee material integrity from the source. Through PMI spectral testing, we verify alloy compositions, ensuring every butterfly valve casting strictly adheres to ASTM/EN standards for optimal performance and longevity in automated systems.

Precision CNC Machining

Our advanced CNC centers machine critical interfaces, like the ISO 5211 mounting pad, to exacting tolerances. This precision guarantees effortless, accurate alignment with any standard electric or pneumatic actuator, ensuring reliable automated control.

Proven, Reliable Design

With two decades of field validation in automated applications, our valve designs are proven to be sound and reliable. This experience means our products deliver consistent, dependable performance when integrated into complex control systems.

IDEAL FOR A WIDE ARRAY OF INDUSTRIES

Our stainless steel wafer butterfly valves offer a versatile and economical solution for flow control in numerous sectors. Their simple design and reliable performance make them a top choice for both general and specialized services.

Water & Wastewater Management

A cost-effective and reliable choice for municipal water distribution and treatment facilities. Our water butterfly valve is widely used for isolation and control in filtration systems, pump stations, and distribution lines.

HVAC Systems

The compact design is perfect for chilled water, cooling tower, and hot water systems. This hvac butterfly valve provides efficient balancing and shutoff capabilities, essential for optimizing building energy performance.

Food & Beverage Processing

With its hygienic design and stainless steel construction, our stainless steel butterfly valve is suitable for utility lines in food and beverage plants, such as process water, CIP systems, and non-critical product transfer.

Pharmaceutical Manufacturing

In utility systems for pharmaceutical production, a butterfly valve ss304 provides clean, reliable service for purified water (WFI), clean steam, and other non-product contact applications, ensuring system integrity.

Light Chemical Applications

The versatile wafer style butterfly valve, available with various seat materials, offers an economical solution for controlling the flow of less aggressive chemicals, solvents, and process fluids where high-end alloys are not required.

Irrigation & Agriculture

For large-scale agricultural water systems, a 6 inch butterfly val provides simple and effective control over main and distribution water lines, ensuring efficient water management for crops and livestock operations.

Pool & Aquatic Facilities

An epdm lined butterfly valve is the standard for commercial pool filtration and circulation systems. It offers excellent resistance to pool chemicals and provides durable, long-lasting service in this demanding environment.

OEM Equipment & Skids

As an oem manufacturer butterfly valve specialist, we supply bare stem valves for integration into packaged systems like pump skids, filtration units, and modular processing equipment, offering a reliable component for your product.

General Industrial Utilities

The quintessential industrial butterfly valve for plant-wide utility services, including compressed air, cooling water, and general process water, providing dependable isolation at a competitive price point.

ENGINEERED FOR VERSATILITY AND AUTOMATED SYSTEMS

Our bare stem wafer butterfly valves are designed to perform reliably across a wide range of operational scenarios, offering an optimal balance of performance, cost, and adaptability.

Space-Constrained Piping

The slim profile of a wafer butterfly valve allows it to fit into tight spaces where gate or globe valves would be impractical. This is a significant advantage in compact equipment skids and crowded mechanical rooms.

Automated Process Control

The bare stem design with a standardized top flange makes our iso 5211 butterfly valve perfect for automation. It allows for the quick, direct mounting of actuators, enabling precise remote control in automated systems.

Cost-Sensitive Projects

Due to its simpler design and lower material usage compared to other valve types, the china wafer butterfly valve provides an excellent balance of performance and economy, helping to reduce the overall capital cost of piping projects.

Moderate Pressure Systems

Engineered for general purpose applications, our standard pn16 butterfly valve configuration is suitable for the vast majority of water, air, and light industrial systems, providing reliable shutoff up to 16 bar.

Bi-Directional Flow Isolation

The concentric design of a center line butterfly valve allows it to seal effectively against flow in either direction. This makes it a versatile choice for isolation points where flow reversal may occur.

Rapid Installation & Replacement

The simple, flange-sandwich design of a wafer type valve significantly reduces installation and removal time compared to flanged valves, minimizing downtime during system construction or maintenance.

MATERIAL OPTIONS FOR DIVERSE MEDIA

Proper material selection is key to valve longevity and system safety. Our stainless steel wafer valves can be configured with a variety of seat materials to handle different chemical environments.

General Water & Neutral Media

An epdm seat butterfly valve is the industry standard for water, air, glycols, and other non-corrosive media. It offers excellent sealing performance and long service life at a very economical price point.

Oils & Hydrocarbons

For applications involving petroleum products, fuels, hydraulic oils, and lubricants, we specify a butterfly valve nbr seat. NBR (Buna-N) rubber offers superior resistance to swelling and degradation from these media.

Aggressive Chemicals

A ptfe seat butterfly valve provides excellent resistance to a broad range of corrosive chemicals, including many acids, caustics, and solvents, ensuring reliable performance in demanding chemical processing lines.

High Purity & Food Grade

For applications requiring hygienic materials, our stainless steel wafer butterfly valve can be fitted with FDA-compliant seats, making it suitable for utility lines in food, beverage, and pharmaceutical manufacturing.

Seawater Service

For marine, desalination, and coastal applications, a butterfly valve ss316 body and disc provides superior resistance to chloride-induced corrosion, ensuring long service life in saline environments.

Oxidizing Chemicals

When handling media like sodium hypochlorite (bleach), ozone, or other strong oxidizers, a viton butterfly valve is recommended. The FKM seat material resists chemical degradation and maintains a reliable seal.

Case Study: Industrial Water Treatment System Integrator

Optimizing Valve Procurement for System Reliability and Actuator Integration Efficiency in Southeast Asia's Competitive Market.

Client Profile: A mid-sized industrial water treatment system integrator based in Southeast Asia, specializing in designing and building customized filtration and purification skids for manufacturing clients.

Project Scope: Supply of 250 units of DN80 to DN300 Stainless Steel Wafer Butterfly Valves (Bare Shaft) for a new water recycling facility project.

The Challenge: Mitigating Risk in a Three-Fold Procurement Dilemma

The lead mechanical engineer, Mr. David Chen, faced a common but critical challenge: sourcing reliable valves that met both technical specifications and tight project budgets. Their previous approach had exposed several operational risks:

Inconsistent Actuator Integration: Sourcing valves from various traders resulted in non-standardized top flanges and stem connections. This required their engineering team to fabricate custom mounting brackets for locally sourced pneumatic actuators, adding an estimated 2-3 hours of skilled labor per valve and creating project delays.
Premature Material Failure & Reliability Concerns: Valves from previous suppliers, while inexpensive, began showing signs of crevice corrosion and seat leakage within 12-18 months of operation, well below the expected 5-year service life. The provided Material Test Reports (MTRs) lacked detailed chemical composition, raising concerns about material authenticity and long-term performance.
Budgetary Pressure vs. Lifecycle Cost: While premium European brands offered reliability, their price point would have resulted in a project cost overrun of approximately 18%. Mr. Chen needed to find a manufacturer that could bridge the gap between high cost and high risk, optimizing the Total Cost of Ownership (TCO).

The Solution: A Foundry-Direct Approach to Standardization and Material Integrity

Instead of simply supplying a product, we engaged with Mr. Chen's team to provide a comprehensive manufacturing solution that directly addressed their core challenges. Our approach was centered on transparency and verifiable engineering quality.

Standardized Automation-Ready Platform

Every valve was supplied with a bare stem featuring a top flange precision-machined to ISO 5211 standards. This guaranteed direct, hassle-free mounting of their preferred local actuator brand. This simple change eliminated the need for custom fabrication, allowing for rapid, repeatable, and error-free assembly on their production floor.

Verifiable Material Superiority via In-House Foundry Control

As a foundry-based manufacturer, we provided full control and transparency over the material. The valve bodies and discs were cast from ASTM A351 CF8 stainless steel. Our key differentiator was the chemical composition control, managed by our founder with 20 years of casting expertise. We guaranteed and certified via MTRs a Nickel (Ni) content consistently between 9.0% and 9.5% (well within the 8-11% standard, but controlled at the higher end for enhanced corrosion resistance). Additionally, the valve body wall thickness conformed to the more robust GOST standard, providing a greater corrosion allowance than typical API-spec bodies.

Quantifiable Performance and Quality Assurance

Each valve underwent hydrostatic testing at 1.5 times its rated pressure and seat testing at 1.1 times, achieving bi-directional zero leakage as defined by API 598 Rate A. We supplied a complete documentation package, including dimensional QC reports for all critical tolerances (like the ISO 5211 flange) and our in-house MTRs. We openly stated that while our standard inspection is in-house, we welcome and facilitate client-appointed third-party inspections (TPI) like SGS or BV at their cost.

A Transparent & Commercially Viable Partnership

Our foundry-direct pricing model delivered a high-specification product that resulted in a final valve procurement cost that was 22% lower than the quote from their previous European supplier. The partnership was further solidified by our transparent commercial terms: a comprehensive 24-month warranty covering free replacement of spare parts and the assurance that all components are manufactured to international standards, simplifying post-warranty maintenance.

The Results: Measurable Improvements Across the Board

18 months post-installation, the project has yielded significant, quantifiable benefits:

22% Cost Optimization: The project came in under budget on the valve procurement line item, directly contributing to the integrator's overall profitability.
~30% Reduction in System Assembly Time: The standardized ISO 5211 top works completely eliminated custom bracket fabrication, significantly accelerating the assembly of actuated valve packages.
Zero Failures in 18 Months: There have been zero reported instances of leakage or malfunction, validating the material quality and engineering. This performance is projected to reduce lifecycle maintenance costs by over 50% in the first five years compared to their previous supplier.
100% Documentation Compliance: The detailed MTRs and QC reports satisfied the end-user's quality audit requirements without any queries, enhancing the system integrator's professional reputation.

"We were stuck between overpriced brands and traders with inconsistent quality. JRVAL's foundry-direct model was the key. Their material reports were detailed, showing Nickel content at the high end of the CF8 spec. The ISO 5211 top flange was perfectly machined, which saved my team significant time on-site. The price was competitive, but it was the verifiable material quality and the 2-year warranty that secured the deal."

Mr. David Chen Lead Mechanical Engineer, Industrial System Integrator

QUALITY & COMPLIANCE CERTIFIED

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

Stainless Steel Wafer Type Butterfly Valve - Bare Stem

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Butterfly Valve Dimensions

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Bare Stem Stainless Steel Wafer Valve: Technical FAQs

Why should I choose a bare shaft (headless) butterfly valve?

A bare stem valve offers maximum flexibility for automation and system integration. Its key benefits are:

Actuator Freedom: It allows you to mount your own preferred brand or type of actuator (pneumatic, electric, hydraulic), which is ideal for standardizing components across your plant.
Standardized Mounting: Our valves feature a top flange and stem connection machined to the strict tolerances of ISO 5211, ensuring direct, hassle-free mounting without the need for custom brackets.
Inventory & Cost Efficiency: For system integrators and large MRO departments, stocking bare stem valves and actuators separately simplifies inventory management and can reduce overall costs.

How do you guarantee the quality of your stainless steel materials?

As a foundry-direct manufacturer, we control quality from the very first step. This is our core advantage.

Superior Material Composition: We manage the entire melting process. For our ASTM A351 CF8 (SS304) valves, we maintain a Nickel (Ni) content of over 9%, at the high end of the standard, for enhanced corrosion resistance.
Thicker, Robust Body: Our valve bodies are cast with a wall thickness conforming to the heavy-duty HG/T chemical industry standard, providing a greater safety margin and longer service life under pressure and corrosion stress.
Full Traceability: Every valve is supplied with a comprehensive Material Test Report (MTR) tracing the chemical and physical properties back to the specific heat lot from our ISO9001-certified foundry.

What flange and design standards do your wafer valves comply with?

Our valves are designed for broad international compatibility to ensure seamless integration into existing or new piping systems.

Flange Compatibility: The universal wafer body is designed to fit between flanges drilled to major international standards, including ANSI B16.5 Class 150, EN 1092-1 PN10/PN16, and JIS B2220 10K.
Design & Dimensions: All valves are manufactured according to the design and strict face-to-face dimensional standards of API 609 Category A. This guarantees interchangeability and simplifies system design.

What does "bi-directional zero leakage" mean, and how is it tested?

"Bi-directional zero leakage" is a technical performance guarantee, not a marketing term. It means our valves provide a bubble-tight seal against pressure from either direction.

Verification Standard: Every single valve we produce is pressure tested according to the rigorous procedures outlined in the API 598 standard (Valve Inspection and Testing).
Performance Level: We test to achieve Rate A zero leakage, the most stringent classification, which permits no visible leakage through the seat during the test. A detailed pressure test report is available for each valve.

What is your warranty policy, and can I get spare parts later?

We provide comprehensive support to ensure the long-term value of your investment.

Warranty Period: We offer a robust 24-month (2-year) warranty against manufacturing defects. During this period, we provide necessary replacement parts free of charge.
Post-Warranty Support: Because our valves are built to international standards like API 609, common wear parts (e.g., seats, O-rings) are standardized. This makes sourcing replacements simple. We also maintain a stock of common spares for our clients.