Product Overview
Our Centric Butterfly Valve delivers maintenance-free, bi-directional bubble-tight shutoff and precise flow control. Engineered with a precision-machined concentric disc and a heavy-duty vulcanized liner, it minimizes friction for low operating torque and an extended cycle life.
Perfectly suited for water treatment, HVAC, and industrial processes, this versatile valve integrates seamlessly with manual, pneumatic, or electric actuation to automate your piping systems.
Technical Specifications
|
Parameter |
Specification Details |
|
Size Range |
DN40 – DN1600 (1.5" – 64") |
|
Pressure Rating |
PN1.0 / PN1.6 / PN2.5 MPa |
|
Temperature Range |
-10°C to 120°C (Up to 150°C with high-temperature EPDM; PTFE available for higher limits) |
|
Body Material |
Cast Iron (GG25 / ASTM A126 Class B) / Ductile Iron (GGG40 / ASTM A536) / Cast Steel (WCB) |
|
Disc Material |
Stainless Steel 304 / 316, Al-Bronze, Nylon-coated Ductile Iron |
|
Stem Material |
SS416 / SS304 / SS316 (Blow-out proof design) |
|
Seat Material |
Premium EPDM elastomer (High wear-resistance, aging-resistant) |
|
Connection Type |
Flanged, compliant with GB/T 12238 (Compatible with ISO 7005 / EN 1092) |
|
Actuation Options |
Hand Lever, Worm Gear, Pneumatic Actuator, Electric Actuator |
|
Applicable Media |
Potable water, wastewater, cooling water, HVAC chilled/hot water, neutral industrial fluids |
Design and Performance Characteristics
The molded EPDM seat features an integrated O-ring profile. This eliminates the need for additional flange gaskets, significantly reducing onsite installation time and material costs.
Machined to cross-match ISO 7005, EN 1092, and ASME standards, allowing direct, modification-free installation worldwide.
An internal heavy-duty retention system prevents stem ejection under extreme pressure surges, ensuring maximum operator safety and aligning with global plant safety protocols.
Every single valve undergoes shell (1.5× PN) and seat (1.1× PN) pressure testing compliant with API 598 / ISO 5208 before shipment.
Global Applications
Water Management: Potable water distribution, wastewater treatment, and transmission mains.
HVAC Systems: Chilled/hot water loops, cooling towers, and commercial heating.
Industrial Piping: Fluid handling in power generation, pulp & paper, and light chemicals.
Fire Protection: Main isolation valves in fire pump rooms and sprinkler supply lines.
Quality Assurance & Compliance
100% Pressure Tested: Every individual valve undergoes rigorous shell (1.5× PN) and seat (1.1× PN) pressure testing strictly compliant with API 598 / ISO 5208 before zero-leakage packaging.
Global Standard Approvals: Manufactured under ISO 9001 quality management systems. Materials for potable water options comply with international health standards (e.g., WRAS / NSF guidelines upon request).
Traceability: Full material traceability with MTRs (Material Test Reports) available according to EN 10204 3.1.
Export-Standard Logistics Packing: All valves, especially large sizes up to DN1600, are treated with anti-rust oil, fitted with protective flange covers, and securely packed in heavy-duty, fumigation-free plywood cases to ensure zero damage during sea freight.
FAQ
Q: What is the typical lead time?
A: Standard configurations (up to DN300) ship within 10–15 working days. Custom materials (e.g., Al-Bronze, PTFE) take 4–6 weeks.
Q: Are these valves suitable for dead-end service?
A: Yes, but we strictly recommend our Lug or Flanged types for dead-end applications. Wafer types are not recommended for this setup.
Q: Can you provide CAD drawings and torque charts for automated valve projects?
A: Absolutely. We provide full 2D/3D CAD drawings, ISO 5211 top-flange dimensions, and precise wet/dry torque charts to help you size pneumatic or electric actuators perfectly.
Q: Do your water-applicable valves have drinking water certifications?
A: Our premium EPDM seats comply with WRAS and NSF guidelines. Please specify your certification requirements when placing your inquiry.
Q: How do you ensure zero leakage before shipping?
A: Every valve undergoes 100% pressure testing (Shell: 1.5× PN, Seat: 1.1× PN) per API 598 / ISO 5208. Full EN 10204 3.1 MTRs are provided.
Q: Do I need extra gaskets for installation?
A: No. The molded EPDM seat features an integrated O-ring profile that seals directly against the pipe flanges, saving installation time and material costs.
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