Damper Butterfly Valve

Connection Type

Flange, Welding

Actuation Type

Lever, Gear, Pneumatic, Electric, Hydraulic

ZZJG damper butterfly valve included two types damper butterfly valve, they are circular welding damper butterfly valve and square damper butterfly valve.

It is widely used in the dust containing cold air or hot air gas pipelines of ventilation and environmental protection projects in metallurgy, building materials, chemical industry, power station, glass and other industries, especially at the inlet and outlet of fans as air volume regulators or hoists.

ZZJG's Advantages

Simple structure, light weight, and fast opening and closing.
Small torque, easy operating, smart and effort-saving.
It can be settled any place, easy maintenance.
Non-sealing valve, used to regulate medium flow.
Range of working temperature: below 300℃.

Product Details

Spec	Detail
Size Range	DN200~6000mm (NPS8"~240")
Pressure Class	PN0.6MPa (Class150)
Matrial	Cast Iron, Ductile Iron, WCB, LCB, CF8, CF8M, CF3, CF3M, A890 4A 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.