Dreifach exzentrisches, metallsitzendes Absperrventil – bidirektional, leckagefrei

Produktdetails

Überblick

The triple offset metal seated butterfly valve is a high‑performance industrial valve based on three eccentric principles: axial eccentricity, radial eccentricity, and conical seat eccentricity. This unique geometry ensures that the disc travels through the 0‑90° range with virtually no friction against the seat, completely eliminating sealing face wear common in conventional butterfly valves. The valve employs a torque‑seated metal sealing structure, achieving bidirectional zero‑leakage performance.

Compared with traditional gate and globe valves, the triple offset butterfly valve offers significant advantages, including compact construction, light weight, low operating torque, and easy installation and maintenance, making it highly reliable for severe service conditions involving high temperature, high pressure, and corrosive media.

Hauptmerkmale

1. Triple Offset Friction‑Free Design

• First offset: Shaft offset from the seat sealing face centerline

• Second offset: Shaft offset from the pipeline centerline

• Third offset: Conical sealing surface geometric eccentricity

• The disc contacts and disengages from the seat instantaneously during operation, enabling friction‑free travel and greatly extending valve service life

2. Bidirectional Zero Leakage Sealing

• Metal‑to‑metal hard sealing

• Higher pressure results in tighter sealing; achieves bidirectional bubble‑tight zero leakage

• Complies with ISO 5208 Class VI leakage rating

3. High Temperature & High Pressure Capability

• Temperature range: -196°C to +600°C (depending on materials)

• Pressure rating: Class150 to Class1500 / PN10 to PN100

• Suitable for high‑temperature steam, thermal oil, hot gas, etc.

4. Fire Safe Design

• The metal sealing structure is inherently fire‑safe

• Complies with API 607 / ISO 10497 fire test standards

5. Easy Maintenance

• Seals can be replaced in‑situ without removing the valve body from the pipeline

• Blowout‑proof stem design meeting API 609 safety requirements

Technische Spezifikationen

Materialoptionen

Anwendbare Medien

• High‑temperature steam, hot water, thermal oil

• Oil, natural gas, coke oven gas

• Acids, alkalis, and corrosive chemicals

• Flue gas, air, oxygen

• Cryogenic media (e.g., LNG)

Typische Anwendungen

• Petrochemical & Chemical – Refinery units, ethylene cracking, storage and transportation systems

• Stromerzeugung – Power plant boilers, turbine bypass lines, thermal piping systems

• Metallurgy – Blast furnace gas, converter flue gas, reheating furnaces

• District Heating – Long‑distance heating networks, heat exchange stations

• Marine & Offshore – FPSO, offshore platforms, LNG carriers

• Pulp & Paper – Pulping, alkali recovery systems

• Lebensmittel und Pharmazeutika – High‑temperature sterilization, clean steam

Actuation Options

• Manual Gear – Standard, self‑locking, low operating torque

• Elektrischer Stellantrieb – Enables remote control and automation

• Pneumatischer Aktor – Fast operation for on‑off or modulating service

• Hydraulic Actuator – Suitable for high‑torque requirements

Anpassung

This product can be customized according to specific service conditions:

• High‑temperature service – Chrome‑Moly steel body + Stellite hardfaced sealing surfaces

• Highly corrosive service – Stainless steel / Duplex / Hastelloy materials

• Cryogenic service – Low‑temperature carbon steel / stainless steel with anti‑fugitive design

• High‑abrasion service – Hardfaced sealing surfaces

For special requirements, please contact us for professional selection assistance.