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.
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: 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 |
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|---|---|
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Type of Connection |
Wafer |
|
Actuation |
Pneumatic |
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Size |
1 1/2in ~ 48in (DN40~DN1200) |
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Pressure |
6bar~20bar (Class 125/150) |
|
Testing Pressure |
1.5 x Rated Pressure |
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Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
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Medium Temperature |
-25~180℃ (Depends on seat material) |
Material of the Valve |
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|---|---|
|
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.) |
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Shaft |
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 |
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Soft Seat |
Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ Plastics: PTFE, PFA, UHMWPE |
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 ProcessWe integrate high-performance pneumatic actuators with our precision-manufactured stainless steel wafer butterfly valves. This combination delivers rapid response, reliable automation, and exceptional durability for modern industrial processes requiring speed and accuracy.
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 stainless steel wafer butterfly valves provide precise, automated control solutions across a wide range of industries, from hygienic applications to heavy-duty processing.
Ideal for sanitary lines, our valves ensure rapid, hygienic shut-off for batching and CIP/SIP systems. A polished stainless steel wafer butterfly valve prevents contamination and withstands aggressive cleaning agents.
For high-purity water (WFI) and process media, a pneumatically actuated pfa lined butterfly valve provides an ultra-clean, non-reactive surface, ensuring process integrity and preventing microbial growth.
Integrated into automated building management systems, our butterfly valve for chilled water system applications provides precise temperature regulation and efficient zone control, optimizing energy consumption.
In automated filtration, chemical dosing, and backwash systems, our reliable china water butterfly valve ensures consistent performance and remote operation, reducing manual intervention in large-scale facilities.
Equipped with a pneumatic positioner, our butterfly valve for flow control allows for precise modulation of chemical additives, ensuring accurate recipe formulation and consistent product quality in blending operations.
For controlling the flow of dyes, bleaching agents, and rinsing water, a robust epdm lined butterfly valve offers excellent chemical compatibility and withstands the high-cycle demands of automated dyeing machines.
In auxiliary systems like cooling circuits and ash handling, a pneumatically operated high temp butterfly valve with specialized seats provides dependable isolation and control under elevated thermal stress.
In slurry transport and dewatering circuits, our pneumatically actuated rubber lined butterfly valve provides superior abrasion resistance and reliable shut-off, automating flow control in harsh, erosive environments.
In ultrapure water (UPW) and chemical delivery systems, a ptfe coated butterfly valve offers a non-contaminating surface, ensuring the stringent purity levels required for microchip fabrication are maintained.
How a mid-sized chemical processor mitigated operational risks and improved batch consistency by upgrading to JRVAL's foundry-direct pneumatic GOST valves.
Application: Automated control of solvent and additive lines for a batch manufacturing process.
Requirement: GOST-compliant, pneumatically actuated butterfly valves (DN150 & DN200) capable of reliable, high-cycle performance in a moderately corrosive environment.
The facility's existing pneumatically actuated valves, sourced from a regional distributor, were underperforming. The procurement and engineering teams identified three core issues impacting production:
1. Inconsistent Actuation & Process Variance: The existing valve actuators exhibited erratic cycle times, with some sticking, leading to inconsistent dosing in their automated batching system. This directly impacted final product quality and led to a batch rejection rate of approximately 3%.
2. Accelerated Corrosion and Unplanned Downtime: Despite using stainless steel valves, operators noted premature seat degradation and minor pitting on the valve bodies. This resulted in an average service life of only 12-14 months, falling significantly short of the plant's targeted 36-month maintenance cycle and causing at least two unplanned line shutdowns per year.
3. Sourcing Dilemma & Budget Constraints: Quotes from established Western European valve brands, while promising better quality, were 20-30% over the allocated budget for the line upgrade. This forced the procurement team to find a manufacturer that could provide enhanced durability and performance without the significant brand premium.
JRVAL was engaged to provide a solution that addressed both the technical and commercial requirements. Our approach was rooted in our direct control over the entire manufacturing process, from casting to final assembly.
Instead of a one-size-fits-all approach, our engineers analyzed the client's specific line pressures (6-8 bar), media viscosity, and required cycle frequency. We calculated the precise torque requirements and specified a pneumatic actuator with a 30% safety factor, ensuring consistent open/close speeds and eliminating the risk of sticking or slow response that plagued their previous setup.
As a foundry-direct manufacturer with over 20 years of casting expertise, we guaranteed material compliance. The valve bodies were cast in-house from certified CF8M stainless steel. We provided our standard MTR and PMI reports for verification. Critically, our valves, manufactured to GOST standards, feature an inherently thicker body wall compared to some other international standards, providing a greater corrosion allowance and structural rigidity, which was ideal for the client's application.
Each valve was equipped with a precision-molded PTFE seat, suitable for the solvent media. The valves were hydrostatically tested to ensure bi-directional zero-leakage performance, certified to meet API 598 Rate A. The internal clog-resistant geometry was also highlighted as a design feature to reduce media buildup and minimize seat wear over time.
We provided a comprehensive QC dimensional report for each valve, generated using calibrated measurement tools. We also clarified our service terms upfront: a 24-month warranty covering free spare part replacement and lifetime online technical support for troubleshooting. Since all components are manufactured to standard specifications, the client was assured of easy spare part sourcing beyond the warranty period.
The upgrade to JRVAL valves delivered measurable improvements:
- 97% Reduction in Downtime: Zero valve-related production stoppages have occurred in 18 months of operation.
- Improved Batch Consistency: The batch rejection rate attributed to inconsistent dosing dropped from 3% to less than 0.5%.
- Optimized Procurement Cost: The final cost of the JRVAL valve package represented a 22% saving compared to the average quote from premium European brands, allowing the project to be completed within budget.
- Extended Service Life: Visual inspection during a planned maintenance shutdown showed minimal seat wear and no signs of corrosion, putting the valves on track to exceed the 36-month target service life.
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
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