Cryogenic Top Entry Butterfly Valve

Connection Type

Welding(ASME B16.10, IS0 5752)

Actuation Type

Pneumatic, Electric, Hydraulic

ZZJG Cryogenic Top Entry Butterfly Valves: Specialized for Ultra-Low Temperature Applications. It's suitable for ultra-low temperature scenarios of -100℃~-196℃, addressing core risks such as medium vaporization and pressure surge, and packing brittle fracture and leakage. Selected low-temperature-adaptable materials are adopted, with austenitic stainless steel for core pressure-bearing components and optional FXM-19 material for valve stems. Multiple rounds of cryogenic treatment eliminate phase transition impacts. Equipped with standard-compliant long neck valve covers and drip pan structures, they prevent frosting and wear, block low-temperature conduction and corrosion, and ensure sealing performance and on-line maintenance requirements.

ZZJG's Advantages

Developed For Use In Lng Systems.
Triple Or Double Offset Design To Reduce Wear On Seat.
Bi-Directional At Full Pressure Rating.
Free Access To Stuffing Box And Gland.
Fire Safe Acc. To API 607.

Product Details

Spec	Detail
Size Range	DN150~1050mm (NPS6"~42")
Pressure Class	PN1.6~4.0MPa (Class150~Class300)
Matrial	A182, F304/F316, CF3M, CF3, CF8M, CF8 etc.
Standards	ANSI, API, CE, DIN, EAC, JIS, ISO, EN

Professional Quality

Various Types

ZZJG offers one of the most comprehensive butterfly valve product lines from a single manufacturer including triple-offset butterfly valves, double-offset butterfly valves, high performance butterfly valves etc.

Service Support

ZZJG range of aftermarket services encompasses valve repair, refurbishment, maintenance, custom engineering solutions, and genuine OEM spare parts to sustain optimal equipment performance well after installation.

Processing Ability

ZZJG employs advanced manufacturing technologies using state-of-the-art machinery and equipment to ensure our products perform in the most challenging environments.

Why ZZJG Butterfly Valves?

API 609 International Certification

Fully compliant with API 609 international standard, covering all structural types including double flange, lug, and wafer types, and has obtained global market access qualifications for the petroleum, chemical, and power industries. Class 150 ~ 2500 (PN20 ~ PN420), NPS2" ~ NPS200" (DN50 ~ DN6000), temperature range -40℃ ~ 600℃, zero-leakage, and fireproof with API 607.

Leading Eccentric Structure Design

Double and triple eccentric design, the valve shaft, valve seat, and pipeline centerline are precisely offset, significantly reducing friction and wear. Bidirectional zero-leakage pressure, with built-in anti-sludge and self-cleaning functions, suitable for harsh media such as sewage and slurry, and with a service life more than 3 times longer than conventional butterfly valves.

Reliable and Guaranteed Quality

Founded in 1981 and located in the valve capital of China, this company is a certified National High-Tech Enterprise with R&D investment exceeding 5%. Its 12-step full-process testing procedure, from material verification to finished product delivery, adheres to API 609 inspection standards to ensure zero-defect delivery.

Customized Services for All Conditions

Adaptable to all media including water, steam, oil, acids, alkalis, and gases, meeting the needs of core industries covered by API 609, such as petroleum, natural gas, chemical, and power. Specialized models are developed for different scenarios, such as fully welded, leak-free butterfly valves for heating pipelines and hydraulically controlled slow-closing check valves for hydropower stations.