High-Performance Butterfly Valves & Systems (Batch I)
Engineered for low torque, bubble-tight zero leakage, and high thermal durability across global municipal and industrial pipelines.
Double Flanged Triple Offset Butterfly Valve
View Specifications →
Butterfly Check Valve with Heavy Hammer
View Specifications →
Extension Stem Wafer Butterfly Valve
View Specifications →
4" Split Body PTFE Full Lined Wafer Valve
View Specifications →
Silencing Check Non-Return Valve
View Specifications →
Ductile Iron SS304 Disc Lug Butterfly Valve
View Specifications →
Pneumatic DN100 PN16 E/P Positioner Valve
View Specifications →
DN100 Multi-Standard EPDM Fully Lined Valve
View Specifications →The Evolution of Industrial Quarter-Turn Flow Control
Analyzing architectural migration from legacy gate and globe configurations to advanced eccentric butterfly valves in global mission-critical infrastructure.
Triple Eccentric (TOV) Geometries
Modern process plants increasingly reject concentric rubber seats for high-temperature service. Triple offset butterfly valves feature angular disc alignment and conical sealing geometry that eliminates friction between seal ring and body seat, achieving true non-rubbing, torque-seated metal-to-metal contact with zero leakage under API 598 standards.
Total Cost of Ownership (TCO)
Procurement teams evaluate butterfly valves not merely on unit purchase price, but lifecycle operational expenditure. Butterfly architectures offer compact face-to-face dimensions (ISO 5752 series 20/EN 558), dramatically reducing structural pipe supports, installation rigging time, and mechanical wear on automated actuator gearboxes.
Digital Smart Plant Actuation
Industry 4.0 integration requires valves to serve as smart edge nodes. Our OEM butterfly valve assemblies incorporate electro-pneumatic positioners (4-20mA HART, Modbus, Profibus) with continuous diagnostic feedback on valve travel, breakaway torque, cycle speed, and seat wear prognosis for predictive maintenance routines.
Supply Chain Resilience, Scale & Precision Machining
Combining Tianjin's world-class metallurgy cluster with automated CNC tooling, cryogenic seat treatment, and robotic coating lines.
Traceable Metallurgy & Casting
Every casting heat is tracked via spectral analysis. We utilize automated sand molding and shell core casting to guarantee density in ductile iron (QT450-10, GGG40/50), cast steel (WCB), and corrosion-resistant alloys (CF8, CF8M, Duplex 2205, Hastelloy, Aluminum Bronze C95400) without micro-porosity.
Multi-Axis Precision CNC Machining
Tight dimensional tolerances are critical for resilient interference fits and metal-seated seal longevity. Multi-axis CNC centers machine the valve body internal contours, disc sealing profiles, and ISO 5211 top mounting pads in a single setup, guaranteeing axial concentricity and reducing operational torque by up to 25%.
100% Hydrostatic & Pneumatic Testing
No valve leaves our facility unverified. Operating under ISO 9001 and CE directives, every unit undergoes shell testing at 1.5x design working pressure and seat integrity testing at 1.1x design working pressure in accordance with EN 12266-1 and API 598 criteria, backed by EN 10204 3.1 material and inspection certification.
Material Science: Resilient & Metal Sealing Selection Guide
Aligning fluid chemistry, pressure ratings, and operating temperatures with optimum body, disc, and elastomer formulations.
| Seat Material | Polymer Type | Operating Temp | Recommended Service Media | Incompatible Media |
|---|---|---|---|---|
| EPDM | Ethylene Propylene Diene | -20°C to +120°C | Potable water, wastewater, HVAC chilled/hot water, air, mild alkalis | Hydrocarbons, mineral oils, petroleum greases |
| NBR (Buna-N) | Nitrile Butadiene Rubber | -10°C to +82°C | Hydraulic fluids, fuel oils, crude oil fractions, compressed air with lube | Strong oxidizers, ozone, ketones, brake fluids |
| PTFE / RTFE | Fluoropolymer Resins | -20°C to +180°C | Aggressive industrial chemicals, sulfuric/nitric acids, high-purity pharma | Fluorine gas at high pressure, molten alkali metals |
| FKM (Viton®) | Fluoroelastomer | -15°C to +200°C | High-temperature hydrocarbons, synthetic oils, harsh solvents, hot gas | Low-molecular esters, steam beyond +150°C, amines |
| Laminated SS316 + Graphite | Metal-to-Metal Triple Offset | -50°C to +450°C | Superheated steam, thermal oil, refinery hydrocarbons, flue gas | Highly abrasive uncalcined slurry slurries |
Global Project Deployments & Specialized Scenarios
Custom OEM engineering delivering certified fluid control across mission-critical municipal, energy, and process sectors.
Municipal Water & Desalination
Large-bore double-flanged butterfly valves (DN600-DN2400) coated with fusion-bonded epoxy (WRAS-approved) and paired with nickel-aluminum bronze (C95800) discs for aggressive seawater reverse osmosis (SWRO).
HVAC & District Cooling
Wafer and lug type butterfly valves installed in central chiller plant headers, cooling towers, and heat-exchanger isolation skids, operating with low breakaway torque for modulation via BMS electric actuators.
Chemical & Petrochemical
Split-body virgin PTFE/PFA fully lined butterfly valves for strong corrosive media, and metal-seated triple offset valves for hydrocarbon fractions, steam isolation, and refinery thermal recovery manifolds.
Marine & Offshore Platforms
Compact lugged and flanged architectures meeting DNV/Lloyd's Register fire-safe standards for shipboard ballast lines, bilge pumping, scrubber systems, and inert gas pipelines where weight reduction is mandatory.
Engineering Questions Frequently Asked by Global Buyers
In-depth technical answers addressing valve selection, OEM branding, standard interoperability, and testing verification.
What is the structural difference between Wafer, Lug, and Double Flanged designs?
Wafer valves are clamped between pipe flanges using through-studs; they are light and economical but cannot provide dead-end isolation. Lug valves possess threaded holes along the body perimeter, allowing each pipeline flange to bolt independently—enabling downstream piping disassembly while maintaining pressure upstream. Double flanged valves integrate standard flat or raised flanges on both faces, providing maximal structural rigidity for heavy civil pipelines and large-bore applications (DN600+).
How does a Triple Eccentric (TOV) valve prevent seat friction and galling?
Offset 1 positions the shaft behind the sealing plane; Offset 2 shifts the shaft away from the pipe center axis; Offset 3 angles the cone profile of the seat. As a result, the disc makes contact with the seat solely at the exact instant of final shutoff (torque seating). This eliminates sliding wear during 90-degree rotation, enabling metal-seated bi-directional zero-leakage shutoff in high-cycle, abrasive, and superheated steam environments up to 450°C.
Can you manufacture butterfly valves multi-drilled to fit multiple flange standards?
Yes. Our wafer and lug type patterns can be engineered with universal or multi-standard oval bolt holes compatible across ANSI Class 150, EN 1092-1 PN10/PN16, JIS 10K/16K, and BS table specifications. This enables global valve stocking distributors to maintain fewer SKUs while serving diverse multi-regional end customers.
What OEM customization scope do you support for international valve brands?
We provide full-scope OEM and private-label manufacturing: bespoke body casting molds featuring client brand logos/model codes, custom stem end geometry (double D, keyed, or square drive conforming to ISO 5211), custom epoxy coating colors (RAL specified), specialized face-to-face dimensions, customized stainless nameplates, and seaworthy plywood pallet export packing with barcoded labels.
High-Performance Butterfly Valves & Systems (Batch II)
Explore heavy-duty gear operators, bronze materials, flanged architectures, and high-temp metal seal variants.
Lug Type Butterfly Valve Casting Body
View Specifications →
DI SS304 Double Flange Butterfly Valve
View Specifications →
Marine Brass / Bronze Wafer Butterfly Valve
View Specifications →
Brass CF8 Metal Seal Industrial Gate Valve
View Specifications →
Manual Worm Gear Wafer Butterfly Valve
View Specifications →
C954 Disc Hydraulic Flange Butterfly Valve
View Specifications →
Two Shaft Replaceable Seat Flanged Valve
View Specifications →
DN100 Hard Back Seat Wafer Butterfly Valve
View Specifications →Initiate Your OEM Valve Specification Project
Send us your pipeline service media, nominal diameter (DN), pressure class (PN/ANSI), body/disc metallurgy, and preferred actuation. Our senior flow engineers return detailed CAD drawings and cost estimates within 24 hours.
