Triple Offset Metal Seated Butterfly Valve
Products Description
The NEWLOTOKE Triple Offset Metal Seated Butterfly Valve is engineered for absolute zero leakage isolation in the most demanding applications. Featuring a patented triple eccentric geometry, it delivers non rubbing, torque seated metal sealing under high pressure, extreme temperature, and fire safe conditions. Ideal for industries like petrochemical, power generation, LNG, water treatment, and cryogenic systems.
Product Detail
|
Specification |
Description |
|
Brand |
NEWLOTOKE |
|
Valve Type |
Triple Offset Butterfly Valve |
|
Sealing |
Metal-to-metal, torque-loaded, non-rubbing |
|
Size Range |
DN80 to DN1200 (3″–48″); larger sizes available on request |
|
Pressure Classes |
ANSI 150/300/600/900, EN PN 10–150, ASME Class 150–900 |
|
Temperature Range |
-196 °C to +450 °C (standard); higher available |
|
Body Materials |
Carbon Steel, Stainless Steel; custom alloys optional |
|
Disc & Seat Materials |
Hardened stainless steel; optional overlays (e.g., Stellite 21) |
|
Stem Material |
17 4PH, 410SS, XM 19 (Nitronic 50) |
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Design Standards |
API 609, ISO 5752, MSS SP 67, API 598, EN 558 |
|
Leakage Rating |
Bidirectional zero leakage, ISO 5208/A, API 598 |
|
Fire-Safe |
Certified to API 607 / ISO 10497 |
|
Stem Packing |
Adjustable, field replaceable, ISO 15848 1 compliant |
|
Stem Connection |
Internal splined disc–stem (axial movement independent) |
|
Stem Design |
Blow out proof, vibration-resistant, with bearings and gland flange per ISO 5211 |
Product Advantages & Features
|
Feature |
Benefits |
|
Triple Eccentric Geometry |
Eliminates disc-seat rubbing and wear; ensures smooth, low torque operation. |
|
Metal-to-Metal Torque Seal |
Offers absolute zero leakage, high pressure capability, fire safe certification |
|
Internal Splined Connection |
Prevents disc/seat misalignment, compensates for thermal expansion, minimizes hysteresis |
|
Field Replaceable Seat & Seal |
Quick onsite maintenance; no need to replace the entire valve |
|
Adjustable Stem Packing |
Complies with fugitive emission standards (ISO 15848 1, API 641, TA Luft) |
|
Fire Resistance |
Metal sealing inherently fire safe and API 607 certified |
|
Robust Stem Design |
Blow out proof and vibration-resistant with high quality bearings |
|
Wide Operating Range |
Handles vacuum to high pressure and -196 °C to +450 °C |
|
Compact & Lightweight |
Ideal replacement for gate or globe valves; space-saving and cost-effective design |
Why choose us?
Used at the project site
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NEWLOTOKE is a manufacturing enterprise specializing in the research, development and production of valves, we welcome global partners to join us to develop the market and create the future together!
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Provide product information, technical support and promotional materials to help sales.
FAQ
|
Question |
Answer |
|
What are the three offsets in a triple offset valve? |
The shaft is offset behind the sealing plane, laterally from bore center, and the conical seat surface is angled-all ensuring non rubbing, torque loaded sealing. |
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Is this valve truly zero leakage? |
Yes. The metal torque seated design achieves bi directional zero leak sealing, meeting API 598 and ISO 5208 standards. |
|
Can it withstand fire or fugitive emission demands? |
Yes. It's fire tested per API 607 and certified per ISO 15848 1 for low emissions. |
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How do I maintain the seat or stem packing? |
Both seat and seal ring are field replaceable. The adjustable packing is replaceable without removing the valve. |
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What sizes and pressure classes are available? |
Sizes range DN80–DN1200 with ANSI ratings from 150 to 900 and EN PN up to PN150. Larger sizes possible by request. |
|
Can it be automated? |
Yes, it supports manual, pneumatic, electric, or hydraulic actuators via ISO 5211 mounting. Stem features a robust, blow out proof design. |
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