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Help CenterChinese Supplier's EPDM Seat Brass Wafer Butterfly Valve Manual Power 4inch 6inch 8 Inch Disc Body DIN PN10 PN16
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Product Advantage
Superior Corrosion Resistance (especially to seawater) and bi-directional zero-leakage sealing, ensuring exceptional longevity and high reliability in harsh marine and chemical environments.
100% Gauge Verification: To validate this precision, every valve's lug holes are 100% inspected with certified go/no-go gauges.
Standards and Certifications
Design & Manufacturing Standards: API 609, ASME B16.34, ASME Section VIII
Leakage Class: API 598 (Bi-directional Zero Leakage)
Side Flange Standards: ASME / ANSI: Class 125LB & 150LB; EN / DIN: PN6, PN10, PN16; BS / AS: BS 10 Table D/E, AS 2129 Table D/E; JIS: 5K, 10K (JIS B2220); GB / HG/T / GOST
Top Flange (Actuator Mounting) : ISO 5211; GB 90°
Face-to-Face Dimension Standards: API 609, ISO 5752, EN 558-1, ASME B16.10, MSS SP-68
Testing & Inspection Standards: API 598, EN 12266-1, ISO 5208, BS 6755-1
Certifications & Conformity: ISO 9001:2015; CE Marking (PED); SIL 3; EAC; BV
Specification of the Valve |
|
|---|---|
Type of Connection |
Semi-Lug (Threaded Bolt Holes: Metric/UNC) |
Actuation |
Bare Stem: With mounting flange per ISO 5211 Manual: Hand Lever, Worm Gearbox Automated: Pneumatic Actuator (Double Acting/Spring Return), Electric Actuator |
Size |
NPS 1 ½" ~ 48" (DN40 ~ DN1200) |
Pressure |
PN6 ~ PN20 / ANSI Class 125 ~ 150 |
Testing Pressure |
Shell: 1.5 x Rated Pressure; Seat: 1.1 x Rated Pressure (acc. to API 598) |
Medium |
Seawater, Brackish Water Also suitable for industrial cooling water, neutral liquids, and air |
Medium Temperature |
-25℃~180℃ (-13°F to +356°F) Depends on seat material |
Material of the Valve |
|
|---|---|
Body |
Aluminum Bronze ( C95400/ C95800) |
Disc |
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.) |
| Shaft |
High-Strength (Recommended): Monel K500, Duplex 2205, 17-4PH Standard Corrosion-Resistant: Aluminum Bronze C95400, SS316 |
Soft Seat |
Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ Plastics: PTFE, PFA |
Quality & Compliance Certifications —— ISO 9001, CE
Our commitment to quality is verified by internationally recognized standards. We provide the corresponding documentation to prove it.
The SOURCE FACTORY
For over 20 years, JRVAL's reputation has been built on deep material expertise and precision engineering. We control the entire process from raw material casting to final assembly, ensuring every valve meets our exacting standards for seamless integration and automation.
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 etc. 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.
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