Product Overview

The GOST Triple Offset Investment Casting Butterfly Valve is a high-performance, metal-seated butterfly valve engineered for demanding applications requiring zero leakage, высокая термостойкость, and exceptional durability. This valve features a triple offset ，the weld end connection provides a permanent, leak-proof joint ideal for high-integrity piping systems in oil & газ, petrochemical, marine, energy, and cryogenic applications.

GOST Triple Offset Butterfly Valve

Technical Specifications

GOST Triple Offset Butterfly Valve

Ключевые особенности

1. Triple Offset / Triple-Eccentric Design – Zero Friction Sealing
2. Metal-to-Metal Hard Sealing – Extreme Temperature & Pressure Capability
3. Investment Casting – Superior Surface Finish & Dimensional Accuracy
4. Weld End Connection – Permanent, Leak-Proof Joint
5. Full Bore Design – Maximum Flow Capacity
6. Fugitive Emissions & NACE Compliance
7. Wide Material Selection – WCB / CF8 / CF8M / CF3M
8. Multiple Actuation Options

Приложения

1. Масло & Газопроводы
2. Petrochemical & Химическая обработка
3. LNG & Cryogenic Services
4. High-Temperature Steam & Производство электроэнергии
5. Marine & Offshore

GOST Triple Offset Butterfly Valve

Упаковка и отгрузка

Packing depends on the product type and quantity. Options include wooden crates or carton boxes with proper protection for weld ends. Shipment can be arranged by sea, железная дорога, воздух, or as per customer’s request.

Условия оплаты

Т/Т, Аккредитив по предъявлении, Western Union, PayPal, Apple Pay, Google Pay, Credit Card, и т. д..

Профиль компании

LUOYANG DATANG ENERGY TECH CO., LTD is a professional industrial valve supplier, dedicated to providing reliable flow control solutions for fire protection, ОВК, water treatment, and industrial piping systems worldwide. All products are manufactured to international standards with UL/FM, CE, и ИСО 9001 certifications. With over 10 years of experience, a modern facility of 80,000 m², и 200+ professional employees, we serve customers in 10+ countries with quality products, competitive pricing, and reliable delivery.

GOST Triple Offset Butterfly Valve

FAQ

1 квартал: What is the difference between a triple-offset butterfly valve and a centric (concentric) butterfly valve?

А: In a centric butterfly valve, the stem is located at the center of the valve body; the disc sealing surface remains in constant contact with the seat during opening and closing, resulting in high friction and a shorter service life. A triple-offset butterfly valve features three offsets that ensure the disc immediately separates from the seat upon opening and only makes contact at the final moment of closing—virtually eliminating friction and wear, while providing zero-leakage sealing and an extended service life.

2 квартал: What is the difference between metal-to-metal (hard) sealing and soft sealing?

А: Metal-to-metal sealing (hard sealing) withstands extreme temperatures (-196°C to +550°C) and offers resistance to wear and corrosion, making it suitable for high-pressure, high-temperature, cryogenic, and abrasive media applications. Soft sealing (например, EPDM, ПТФЭ) offers superior sealing performance (zero leakage) but has a limited temperature range (typically -20°C to +200°C) and is not suitable for high temperatures or abrasive media. Triple-offset metal-seated butterfly valves are ideal for demanding operating conditions requiring exceptional sealing integrity and reliability.

Q3: What is the operating temperature range for this valve?

А: The operating temperature range is -196°C to +550°C, covering a full spectrum of applications from cryogenic LNG service to high-temperature steam and process heating. This makes the valve an ideal choice for various extreme-temperature applications, including liquefied natural gas (LNG), cryogenic gases, high-temperature steam, and hot oil systems.

Q4: What does compliance with NACE MR 0103 and MR 0175 иметь в виду?

А: NACE MR 0103 and MR 0175 are material standards used in the oil and gas industry for sour service environments containing hydrogen sulfide (H₂S). Compliance indicates that the valve materials have been specially treated and tested to resist sulfide stress cracking (SSC) and hydrogen-induced cracking (ИК) in acidic environments, ensuring safe and reliable operation in oil and gas processes involving H₂S.

Q5: What actuation methods are supported for this valve?

А: Options include handwheel (manual, for small sizes), worm gear (self-locking, for DN150 and above), electric actuator (remote/modulating control), pneumatic actuator (rapid response), and hydraulic actuator (high thrust). The top flange complies with the ISO 5211 стандартный, allowing for direct actuator mounting without the need for additional adapters.

GOST Triple Offset Butterfly Valve