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Worm Gear Triple Offset Replaceable Seat Lugged Fire Safe Blowout-Proof Stem Duplex Hastelloy Corrosion Resistant Butterfly Valve
US$163.00
1 Piece
Product specifications
Body
Disc
Seat
Sample price:US$120.00/piece.Request sample
Product profile
Customization
AvailableMedia
Water, Oil, Gas and OthersDriving Mode
Worm GearModel NO.
D40L3-04Connection Form
Lug SupportStructure
Three-Eccentric SealingSeal Form
Metal SeatValve Stem
NormalWork Pressure
Mid-Pressure (2.5mpa< Pn <6.4mpa)Working Temperature
Medium Temperature (120°C<T<450°C)Material of Seal Surface
Metal Hard SealedValve Body
CastingStandard
ANSI, GB, JIS, DINApplication
Industrial Usage, Water Industrial UsageBody Material
SS304, SS316, SS316L, 2205, 2507, C95400, C95800Disc Material
SS304, SS316, SS316L, 2205, 2507, C95400, C95800Seat Material
Metal SeatStem Material
17-4pHSize Range
DN50-DN2600End Connection
Wafer, Lug, Flange, WeldedTop Flange
ISO5211Design Standard
ASME B16.34, ISO5208Face to Face Standard
Ap1 609, ISO5752Leakage Class
Zero LeakageTest and Inspeciton
Ap1 598Lever Style
Aluminum Alloy, Ma SteelBrand
SftecOperation
Worm GearStem Style
Normal or ExtensionTransport Package
Carton or Wooden CaseSpecification
DN40-DN300, DN350-DN1200Trademark
SFTECOrigin
ChinaHS Code
8481804090Production Capacity
500000Key features
Frictionless Operation: Triple offset design ensures disc disengages from seat instantly upon opening, minimizing seal wear
Bidirectional Zero Leakage: Metal sealing achieves bubble-tight shut-off in both directions per 598
Extreme Temperature Range: Operates from -196 degree C cryogenic to 550degree C high temperature, covering diverse thermal conditions
Long Seal Life: Laminated stainless steel + graphite seat offers excellent wear and corrosion resistance
Fire-Safe Design: All-metal construction with no soft parts, compliant with AP1 607 fire-safe standard
Low Operating Torque: Triple offset geometry significantly reduces opening/closing torque for easy actuation
Severe Service Ready: Suited for high temperature, high pressure, corrosive/abrasive media, and LNG cryogenic services across industries
Worm gear drive features self-locking, maintaining stable position under vibration and flow surges.
Lug-type connection permits end-of-line installation and online maintenance with flexibility.
Metal-to-metal sealing ensures bi-directional bubble-tight zero leakage for critical services.
Company profile
Business Type: Trading CompanyNearest Port: ShanghaiAverage Response Time: ≤0.92hTerms of Payment: LC, T/T, D/PInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAP, FCA
About Our Factory & Business Background
AddressPukou, Nanjing, Jiangsu, China
Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays
Our Production Capability & Technical Expertise
Main ProductsTriple Offset Butterfly Valve, Double Eccentric Butterfly Valve, Concentric Butterfly Valve, Trunnion Ball Valve, Floating Ball Valve, High Pressure Valve, Cryogenic Valve, Valve Actuator, Control Valve
Our Industry Experience & Global Business Record
Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Product Q&A
Q:What is a triple offset butterfly valve?
A:
A triple offset butterfly valve adds a third offset -an angular cone axis offset to the double offset design. This allows the disc to move without friction against the seat for most of the stroke, contacting only at the final closure point, enabling metal to metal zero leakage sealing
Q:What are the main advantages?
A:
Key advantages include: friction free operation reducing wear; bidirectional bubble tight sealing; wide temperature range (-196C to 815C); and suitability for high temperature, high pressure, corrosive, and abrasive media applications.
Q:Can triple offset butterfly valves achieve bidirectional sealing?
A:
Yes. Advanced designs use a spring loaded adjusting ring to compensate for shaft elastic deformation under pressure, enabling reliable bidirectional sealing. Forward pressure increases sealing tightness; reverse pressure is compensated by spring stored energy
Q:What leakage class can be achieved?
A:
With metal to metal seating, they achieve Class VI bubble tight shut off per 598/ISO 5208.
Q:What temperature range can they handle?
A:
They operate from cryogenic -196C (LNG service) up to 815C, far exceeding ordinary butterfly valves.
Send Inquiry
*To:
Sunfair Fluid Control Co., Ltd
Sunfair Fluid Control Co., Ltd*Content:
Supplier replies will be sent to your registered email
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