China DN50-1000 PN16 CL150 Wafer Butterfly Valve Factories, Exporters

In the ZFA valve, the size of the wafer butterfly valve from DN50-1000 is usually exported to the United States, Spain, Canada, and Russia. butterfly valve products of ZFA, well-liked by customers.

Product Description

Butterfly valves are open and close very quickly when actuated pneumatically. The disc is lighter than a ball, and the valves require less structural support than a ball valve of comparable diameter. Butterfly valves are very precise, which makes them advantageous in industrial applications. They are quite reliable and require very little maintenance.

Key Features & Advantages

Turning on/off easily and rapidly with less force. Having less fluid resistance and can be operated frequently.
Simple structure, small size and short face to face dimension, which suitable for large diameter valves.
It can be used for transmitting mud, fewer liquids are stored at apertures of pipe.
Long service life. Standing the test of tens of thousands of opening/closing operations.
Butterfly valves have excellent regulation performance.
Small torque. The pressure on discs at the two sides of the spindle is almost equal, causing contrary torque. Thereby, the valves can be opened with less force.
Sealing face is generally made of rubber or plastic. So the butterfly valves can be with good sealing under low pressure.

Technical Specifications

Size & Pressure Rating & Standard
Size DN40-DN1200
Pressure Rating PN10, PN16, CL150, JIS 5K, JIS 10K
Face to Face STD API609, BS5155, DIN3202, ISO5752
Connection STD PN6, PN10, PN16, PN25, 150LB, JIS5K, 10K, 16K, GOST33259
Upper Flange STD ISO 5211

Material Specifications

Material
Body Cast Iron(GG25), Ductile Iron(GGG40/50), Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L), Duplex Stainless Steel(2507/1.4529), Bronze, Aluminium Alloy.
Disc DI+Ni, Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L), Duplex Stainless Steel(2507/1.4529), Bronze, DI/WCB/SS coated with Epoxy Painting/Nylon/EPDM/NBR/PTFE/PFA
Stem/Shaft SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel
Seat NBR, EPDM/REPDM, PTFE/RPTFE, Viton, Neoprene, Hypalon, Silicon, PFA
Bushing PTFE, Bronze
O Ring NBR, EPDM, FKM
Actuator Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator

Product Gallery

Frequently Asked Questions

What are the main advantages of butterfly valves over ball valves?

Butterfly valves feature lighter discs, a shorter face-to-face dimension, and require significantly less structural support compared to ball valves of the same diameter. They also open and close much faster and are more cost-effective for large-diameter pipelines.

What size range and pressure ratings are available?

The available sizes range from DN40 to DN1200, supporting standard pressure ratings including PN10, PN16, CL150, JIS 5K, and JIS 10K.

Can butterfly valves handle slurries and mud?

Yes. The internal flow path design prevents substantial fluid build-up at pipe apertures, making these valves suitable for transmitting mud, slurries, and suspended solids.

Which actuation methods are compatible?

Valves can be configured with manual hand levers, gear boxes, electric actuators, or pneumatic actuators based on your automation requirements, featuring standard ISO 5211 top flanges.

What body and seat materials are available for corrosive applications?

Materials such as Stainless Steel (SS304/SS316), Duplex Stainless Steel, and Monel are available, paired with chemical-resistant seat materials like PTFE, RPTFE, Viton, and PFA for aggressive media.

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