VBJG-300001 All-Metal Triple-Offset Butterfly Valve
The all-metal triple-offset butterfly valve features a pure metal-to-metal hard-surface sealing pair without non-metal interlayers. Therefore, it is high-temperature resistant, wear-resistant, erosion-resistant, and fire-resistant. It has an advancetd structure, reliable sealing, long service life, and low cost. It also has regulating and shut-off functions. It is an economical and practical automatic control valve, widely used in fluid conditions with high flow rates, medium and low pressure differences, and strict leakage requirements. It is especially suitable for high-temperature and fire-resistant applications.
Technical data
| Nominal Pressure | Class150–Class1,500; PN16–PN260 | Nominal Diameter | DN80~DN1200；3”~48” |
| Operating Temperature | -100°C to +650°C | End Connection | Flanged, welded and other configurations |
| Leakage Rating | Class IV, Class V, Class VI |
Features & Benefits
Friction-Free Operation and Extended Service Life
The triple-offset design enables immediate seat disengagement upon opening and final-stage contact upon closing, requiring low breakaway torque.
Anti-blowout Stem Design
The one-piece stem is manufactured from high-strength stainless steel to withstand high differential pressure. The stepped structure effectively prevents stem blowout and enhances valve safety.
Inherent Fire Safety
Constructed entirely from metallic fire-resistant materials, this valve is inherently fire-safe and certified to fire test standards including API 607 and API 6FA.
Replaceable Sealing Components for Easy Maintenance
The valve seat and sealing ring are independent, removable components, enabling sealing elements to be replaced without full valve disassembly, significantly reducing maintenance downtime and lowering maintenance costs.
Compact, Lightweight Design
Compared with conventional gate valves and globe valves, this valve offers substantially reduced size and weight — typically ranging from one-third to one-half the weight of a comparable gate valve. This saves installation space and reduces piping support loads.
Certifications
Applications
Chemical:
Regulation and shut-off applications in high-temperature cracking units, FCC flue gas expander valves, ammonia synthesis loops, titanium dioxide production units, liquid chlorine pipelines in the chlor-alkali industry, and emergency shutdown (ESD) systems.
Oil & Gas
Regulation and shut-off applications in propane dehydrogenation (PDH) units, cryogenic pipelines at LNG receiving terminal, LNG storage tank inlet/outlet, high-pressure long-distance natural gas transmission pipelines, underground gas storage injection/withdrawal systems, and coal gasification syngas pipelines
Case Studies
Lithium Carbonate Project for Qinghai Salt Lake Lanke Lithium Industry Co., Ltd.
Deployed in critical applications including high-temperature steam lines, lithium precipitation mother liquor recovery, high-temperature brine transfer, filter press inlet/outlet lines, and utility piping for high-temperature media, with demonstrated resistance to chloride ion
PetroChina Suqiao Underground Gas Storage Facility
The all-metal triple-offset butterfly valves installed on the manifold and branch piping at the gathering and injection station are used for gathering, distribution, and flow switching of gas from multiple wells.
