Ductile Iron Body Worm Gear Flange Type Butterfly Valve

The ductile iron turbine butterfly valve is a common manual butterfly valve. Usually when the valve size is larger than DN300, we will use the turbine to operate, which is conducive to the opening and closing of the valve.The worm gear box can increase the torque, but it will slow down the switching speed. Worm gear butterfly valve can be self-locking and will not reverse drive. Maybe there is a position indicator.

Size: 2”-160”/DN50-DN4000

Pressure Rating: PN10/16, JIS5K/10K, 150LB

Warranty: 18 Month

Brand Name: ZFA Valve

Service: OEM

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Product Detail

Size & Pressure Rating & Standard
Size	DN40-DN4000
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
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

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Product Advantage

Suitable Media: Wafer and other neutral medium, working temperature from -20 to 120℃, the application of the valve can be municipal construction, wafer conservancy project, water treatment etc.

ZFA Valve strictly execute API598 standard, we do both side pressure testing for all the valve 100%, guarantee deliver 100% quality valves to our customers.

ZFA Valve focus on valves production for 17 years, with professional production team, we can help our customers to archive your goals with our stable quality.

We use CNC machining to process the valve disc, control the precision of the valve by ourselves, guarantee good sealing property from low to high temperature.

Our valve stem is stainless steel material, the strength of the valve stem is better after tempering, reduce the transformation possibility of valve stem.

The quality inspection from the blank to the finished product is 100% guaranteed.

The sleeve bearing is self-lubricating type, so the friction of the stem is small so you can open and close the valve tightly.

All our valves have 18 months quality warranty, if any leakage, you can contact us for the after-sales issue.

The flange type butterfly valve is made by ductile iron, it has a great feature that short face to face dimension and easy to install. The valve torque is small and the sealing surface between the seat and disc is small.

Our valve can be produced by different kinds of materials, it’s produced by international standard and national standard according to your requirement.

The valve body and inner parts are produced by CNC machine to guarantee the precision of the valve production. It’s an epoxy coating body with good looking appearance.