Worm Gear Wafer Butterfly Valve

Worm gear wafer butterfly valve, usually used in size big than DN250, 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. For this Soft seat worm gear wafer butterfly valve, the advantage of this product is that the seat can be replaced, which is favored by customers. and compared to the hard back seat, its sealing performance is superior.

Size: 2”-48”/DN50-DN1200

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-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
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

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.

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.

ZFA Valve body use solid valve body, so the weight is higher than regular type.

The valve adopt epoxy powder painting process, thickness of tht powder is 250um at least. Valve body should be heating 3 hours under 200℃, powder should be solidify for 2 hours under 180℃.

After natural cooling, the adhesive of the powder is higher than regular type, guarantee there’s no color change in 36 months.

Marker Plate located on body side of the valve, easy to watch after installation. Material of the plate is SS304, with laser marking. We use stainless steel rivet to fix it, makes it cleaning and tighting.

Bolts and nuts use ss304 material, with higher rust protection capability.

Handle of the valve use ductile iron, is anti-corrosion than regular handle. Spring and pin use ss304 material. Handle part use semicircle structure, with good touch feeling.