Pinless Design: Key/square shaft connection eliminates pin loosening/breakage, ensures stability in high-frequency/vibration, reduces failures.
Bidirectional Sealing:Elastic seat + spherical disc seals bidirectionally (custom leakage class), blocks contamination/backflow.
2-Ear Wafer:Compact design with bolt self-alignment for fast, precise installation with minimal errors.
Premium Materials: MTC certificates + PMI testing ensure material authenticity and compliance.
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 | Pneumatic |
| Size |
1.5in~108in (DN40~DN2700+) |
| Pressure |
6bar~64bar (Class 125/ 150/ 300) |
| Testing Pressure | 450psi |
| Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
| Medium Temperature |
-40℃~250℃ (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, RPTFE, PFA, UHMWPE, PEEK |
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 stainless steel butterfly valve 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.
Discover Our Material ScienceOur 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.
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.
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.
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.
Engineered for precision and reliability, our pneumatic high-performance butterfly valves are the trusted choice for control and isolation in critical industrial processes worldwide.
In midstream and downstream facilities, our pneumatically actuated high performance butterfly valve ensures rapid, reliable shutoff in hydrocarbon transport and processing lines, enhancing plant safety and operational efficiency.
The robust stainless steel construction of our double eccentric butterfly valve provides superior resistance to aggressive chemicals, offering long-lasting, leak-free service in reactors, distillation columns, and storage tank farms.
For cooling water systems and flue gas desulfurization (FGD) circuits, the double offset butterfly valve offers exceptional throttling capabilities and tight shut-off, withstanding high pressures and temperatures common in power plants.
As a leading high performance butterfly valve supplier, we provide solutions that handle abrasive pulp slurries and corrosive bleaching chemicals, with a seat design that prevents clogging and ensures continuous production.
Our specially configured high performance wafer butterfly valve with an extended bonnet excels in cryogenic applications, maintaining seal integrity and operability at temperatures down to -196°C for liquefied natural gas.
Chosen by a premier double offset butterfly valve supplier for high-pressure reverse osmosis (RO) systems, our valves, constructed from duplex stainless steel, resist corrosion from brine and ensure reliable flow control.
Trusted by leading high performance butterfly valves manufacturers, our valves feature hard-faced seats and discs to withstand the highly abrasive slurries found in mineral extraction and processing, minimizing downtime and maintenance costs.
Our ABS and DNV certified China high performance butterfly valve is ideal for ship ballast, cooling, and bilge systems, featuring a compact wafer design and materials selected for superior performance in saltwater environments.
The polished, crevice-free surfaces of the high performance double offset butterfly valve, combined with FDA-compliant seals, make it perfect for high-purity water (WFI) and clean steam systems, ensuring product integrity.
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
From Unreliable Sealing to Optimized Production: A Chemical Plant's Valve Upgrade
Client: A mid-sized specialty chemical production facility in Southeast Asia.
Contact: Mr. Azlan, Head of Maintenance and Reliability Engineering.
This case study details how a shift from a premium-priced European valve supplier to our engineering-led source manufacturing model resolved critical production challenges, optimized maintenance budgets, and enhanced operational reliability.
Mr. Azlan's team faced recurring issues in a process line handling a mildly acidic solvent. Their existing high-performance butterfly valves from a well-known European brand were underperforming, leading to significant operational and financial strains:
Instead of proposing a simple "like-for-like" replacement, our technical team collaborated with Mr. Azlan to deliver a comprehensive, data-backed solution focusing on material science, precision manufacturing, and supply chain efficiency.
As a foundry-first manufacturer, we addressed the core issue of material longevity. We specified our High-Performance Wafer Butterfly Valve in ASTM A351 CF8M (316L) stainless steel. Our in-house foundry, managed by our founder with 20+ years of casting expertise, ensured the chemical composition met the upper end of the standard, with a verified Nickel content of >11.5% for enhanced corrosion resistance. We provided full Material Test Reports (MTRs) and our internal QC dimensional inspection reports. We also clarified that the client could commission third-party verification (e.g., SGS, BV) at their expense for added assurance.
The selected valve featured our proprietary seat design which ensures bi-directional, zero-leakage sealing that meets API 598 Rate A standards. The key was integrating this with a precisely sized spring-return pneumatic actuator. This configuration provided a critical fail-close safety function, automatically isolating the line upon loss of instrument air—a crucial enhancement to their process safety management (PSM) protocols that the previous on/off actuator setup lacked.
By engaging directly with us, the source manufacturer (81,426m² facility with 11 CNC centers), Mr. Faisal's team eliminated distributor markups and gained direct access to our production schedule. This transparency and our in-house control over casting and machining resulted in a confirmed lead time of just 9 weeks—a 44% reduction from their previous supplier.
We provided a comprehensive 24-month warranty, including free replacement of spare parts. Critically, our valves are manufactured to strict MSS-SP-68 design standards, ensuring that post-warranty, common spares like seats and packing are dimensionally interchangeable and can be sourced easily on the open market, significantly lowering the Total Cost of Ownership (TCO).
The project moved beyond simply replacing parts to delivering tangible improvements to the plant's KPIs:
Ready to configure for your project?
As a source manufacturer with our own foundry, we control quality from the molten metal stage. Our chemical compositions are maintained at the highest end of international standards; for instance, our ASTM A351 CF8 (304) stainless steel consistently contains 9% Nickel for superior corrosion resistance.
Every valve is shipped with full documentation, including MTR certificates and our internal PMI verification reports. We also welcome client-commissioned third-party inspection for complete assurance.
Our proprietary resilient seat and precision-machined spherical disc design provides true bi-directional sealing. Every valve is tested to meet the stringent requirements of API 598 Rate A for zero leakage. This ensures reliable performance, preventing backflow and cross-contamination in your process lines.
The pinless design (typically a square or keyed shaft) creates a direct, robust connection. This eliminates a common failure point—pin corrosion, shearing, or loosening—which is critical in high-cycle or vibration-prone services. It ensures consistent, backlash-free torque transmission from the actuator to the disc, enhancing valve reliability and service life.
Absolutely. Our valves are manufactured with a top flange and stem connection that strictly adheres to the ISO 5211 standard. This universal mounting pad ensures seamless and direct mounting of any ISO 5211 compliant actuator, whether it's from us or your preferred automation supplier, providing maximum system design flexibility.
We provide a comprehensive 2-year (24 months) warranty from the date of shipment, covering any defects in materials or workmanship. Within this period, we offer free replacement of spare parts.
Crucially, our valves are built to standard industry dimensions. This means that after the warranty period, common wear parts like seats and seals are easily sourced from other standard suppliers, ensuring a low total cost of ownership and preventing supplier lock-in.
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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
