Specialized standards for specialized supply: Strict standards separation ensures dimensional compatibility, eliminating misalignment risks.
Precision-Matched Flanges:Flanges customized from pipeline measurements for leak-free sealing.Thickness reinforced per standards (e.g., HG/T).
Traceable Craftsmanship: ISO9001 casting with permanent markings enables lifetime quality tracking.
Full-process Reliability: Reinforced components exceed standard product performance in strength/sealing/operation.
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
Design and Manufacture: ASME B16.34; ASME VIII; API 609
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 |
Flange |
| Actuation |
Pneumatic Actuator (Spring Return / Double Acting) |
| Size |
1 1/2in ~ 48in (DN40~DN1200) |
| Pressure |
6bar~20bar (Class 125/150) |
| Testing Pressure |
1.5 x Rated Pressure |
| Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
| Medium Temperature |
-25℃~180℃ (Depends on seat material) |
Material of the Valve |
|
|---|---|
| Body |
Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), JS1030, 1.4406 Duplex Stainless Steel: 2205, 2507 Austenitic Stainless Steel: 1.4529, CN7M (Alloy 20) |
| Disc |
Cast Iron: DI, CI Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), 1.4529 (926) Aluminum Bronze: C95400, C95800 Nickel Alloy: CW6MC (Hastelloy C-276 eq.) |
| Stem |
Carbon Steel: 45# Stainless Steel: SS410, SS416, SS420; SS304, SS316, SS304L, SS316L; 17-4PH (SS630); Duplex 2205, Super Duplex 2507, 1.4529 Nickel Alloy: Monel K500, Hastelloy C-276 |
| Soft Seat |
Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ Plastics: PTFE, PFA, UHMWPE |
| Pneumatic Actuator | Anodized Aluminum Alloy, Stainless Steel |
Double Acting: Utilizes compressed air to power both the open and close strokes of the valve.
Single Acting / Spring-Return: Uses compressed air for one stroke and a mechanical spring for the return stroke, providing a fail-safe position.
- Normally Closed (NC) / Fail-Close: The spring closes the valve upon loss of air pressure.
- Normally Open (NO) / Fail-Open: The spring opens the valve upon loss of air pressure.
On/Off (Discrete): For fully open or fully closed service, providing simple and reliable isolation.
Modulating (Throttling): For precise flow control by positioning the disc at any intermediate angle. Requires an electro-pneumatic positioner.
Electro-magnetically Released: A specialized double-acting actuator designed for specific safety or emergency shutdown (ESD) applications.
Custom Solutions: Other actuator configurations and accessories are available upon request to meet unique application requirements.
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 ProcessOur pneumatic stainless steel butterfly valves combine robust corrosion resistance with rapid, reliable automation, delivering precision control for your most critical applications. We provide a complete, ready-to-install automated valve solution.
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.
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.
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.
Our pneumatic actuated stainless steel valves provide the reliable, hands-free control essential for optimizing processes, ensuring safety, and maintaining product quality in diverse industrial sectors.
For precise, automated control of chemical feed lines, our pneumatic valves ensure accurate batching and consistent recipes. The robust design of our pn16 butterfly valve withstands the demands of continuous, high-cycle operation.
Ideal for automated filter backwash cycles, chemical dosing, and flow diversion in municipal and industrial water plants. As a leading awwa butterfly valve manufacturer, we provide reliable solutions for critical infrastructure.
Automate mash, wort, and hot liquor transfer with hygienic, fast-acting pneumatic valves. A pneumatically actuated 3 inch stainless steel butterfly valve is a popular choice for precise flow control in craft and industrial brewing systems.
Used for automated control of cooling tower water, chiller isolation, and large air handling unit circuits. The rapid on/off capability of a pneumatic 6 inch butterfly valve helps optimize energy efficiency and system performance.
Automate the control of abrasive slurries and process water lines. A pneumatically operated rubber lined butterfly valve offers excellent abrasion resistance and provides reliable shutoff in demanding mining environments.
For automated control of WFI (Water-for-Injection), clean steam, and CIP/SIP systems. The high-purity materials of our butterfly valve ss316 combined with pneumatic actuation ensure sterile process integrity.
Perfect for automating non-critical utility lines such as cooling water, firewater systems, and effluent treatment on platforms and refineries. Our reliable class 150 butterfly valve provides robust performance for general service.
Automated control of cooling water intake, condenser isolation, and flue-gas desulfurization (FGD) systems. A large-diameter pneumatic 12 inch butterfly valve offers dependable, remote operation for critical power plant processes.
For automated handling of UPW (Ultra-Pure Water) and chemical delivery systems where purity is paramount. A pneumatically driven ptfe coated butterfly valve ensures a non-contaminating surface for sensitive electronic processes.
Risk Mitigation and Cost Optimization for a Sodium Hypochlorite Dosing System in a Chemical Plant
| Project at a Glance: Key Performance Indicators (KPIs) | |
|---|---|
| Client Industry | Chemical Manufacturing (Water Treatment Division) |
| Application | Automated isolation and control for Sodium Hypochlorite (NaClO) dosing lines |
| Product | DN150 / PN16 Pneumatic Actuated Flange Butterfly Valve (CF8M Body/Disc, PTFE Seat, Spring-Return Actuator) |
| Cost Optimization | 22% lower than the legacy European brand's quote, resulting in a €18,200 saving on the initial valve package (20 units). |
| Lead Time Reduction | Delivered in 10 weeks, compared to the 18-week projection from other suppliers, accelerating the plant upgrade schedule. |
| Long-Term Reliability | Zero failures or seal leaks reported after 24 months of continuous, high-cycle operation. Warranty period successfully completed. |
A chemical plant was upgrading its automated dosing system for sodium hypochlorite (12.5% solution), a highly corrosive medium. Their primary challenge was sourcing a reliable, fully automated valve package that could withstand the chemical attack while integrating seamlessly with their PLC for fail-safe operation. The procurement team was navigating between two undesirable options: high-cost legacy brands with extended lead times (18+ weeks) and alternative suppliers whose material and performance claims were difficult to verify, posing a significant operational risk.
The project demanded a solution with verifiable material integrity (CF8M stainless steel), bi-directional zero-leakage sealing (API 598 Rate A), and a spring-return pneumatic actuator for fail-close functionality. Critically, the procurement process required a manufacturing partner who could provide a complete technical dossier, not just a certificate of conformity, to satisfy internal quality assurance audits.
As a source manufacturer with our own 81,426m² facility and a 20-year foundation in casting, we provided unparalleled material transparency. All CF8M body and disc castings were produced in-house. The client received a documentation package including:
We met and documented performance criteria with specificity:
Our 11 key CNC machining centers ensured consistent quality and allowed us to meet the 10-week delivery schedule. The final offer included a clear after-sales commitment:
"JRVAL provided the level of documentation we require from top-tier suppliers but with the flexibility and direct communication of a dedicated manufacturing partner. Their in-house casting control gave us the confidence in material integrity that was non-negotiable for this corrosive application. The 22% cost reduction was a significant benefit, but the verifiable quality and on-time delivery were what secured our trust for future projects."
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
Need a reliable, ready-to-install automated valve solution?
We provide two primary types for different process needs:
1. Double-Acting: Requires compressed air to both open and close the valve. Ideal for standard on/off applications where power loss can leave the valve in its last position.
2. Spring-Return (Fail-Safe): Uses air to open (or close) and internal springs to automatically return the valve to a "safe" position upon loss of air pressure. You specify the fail-safe mode: Fail-Close (standard) or Fail-Open.
We supply a complete, pre-configured automation package. Simply specify your requirements:
• For On/Off Control: We add a solenoid valve (specify voltage: e.g., 24V DC, 110V AC).
• For Position Feedback: We add a limit switch box to send open/closed signals back to your PLC.
• For Modulating Control: We add an electro-pneumatic positioner that accepts a 4-20mA or 0-10V control signal.
Proper sizing is critical. We calculate the valve's required break-torque based on your process parameters (line pressure, media). We then apply a minimum 30% safety factor to select an actuator that guarantees reliable performance, prevents stalling, and ensures a long operational life, especially in high-cycle applications.
Our standard actuator bodies are anodized aluminum alloy, which provides excellent corrosion resistance for most industrial environments. For highly aggressive areas (e.g., coastal salt spray, chemical washdown zones), we offer a full stainless steel (SS304) actuator body and components as a robust upgrade. The valve itself maintains its specified stainless or alloy steel construction.
We provide a comprehensive 24-month warranty covering both the valve and the pneumatic actuator against manufacturing defects. If an issue arises, we offer online technical support to diagnose the problem. Any necessary replacement parts are provided free of charge during the warranty period. Post-warranty, spares are readily available as all components adhere to standard industry dimensions.
Receive a ready-to-install automated valve package. We mount and test all components (actuator, solenoid, switch box) before shipment, reducing your on-site installation time and eliminating integration risks.
As a casting-based manufacturer, we control material quality from the very beginning. This vertical integration guarantees the chemical composition and mechanical properties of every valve, providing verifiable material integrity.
Your project has unique needs, and our solutions are not one-size-fits-all. We work with you to configure the precise combination of materials, actuation, and control accessories to meet your exact process requirements.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
Technical Support: Magic Lamp - Website
