Cast Iron Wafer Pneumatic Butterfly Valve

Description of Soft-seal Pneumatic Wafer Butterfly Valves

The soft-seal pneumatic wafer butterfly valve refers to a valve whose closing part (valve stem or medium plate) is a disc that rotates around the lake to open and close. It mainly serves to cut off and throttle the pipeline. It is mainly composed of a butterfly valve and a matching pneumatic actuator. It has the characteristics of a simple structure, small size, lightweight, low material consumption, small installation size, rapid switching, 90″ reciprocating rotation, and small driving torque. It is used to cut off, and connect, It regulates the medium in the pipeline and has good fluid control characteristics and closing sealing performance.

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Technical Parameter Of Cast Iron Wafer Pneumatic Butterfly Valves

Valve Models	DN50~DN1200	Rotate Angle	90°+5%
Connection Type	Wafer	Pneumatic Type	YAT Series or YAW Series pneumatic actuator
Cylinder	Double acting or Single Acting(Spring Return)	Control Method	Two-position cut-off (switch type), adjustable type, three-stage type (opening optional)
Air Pressure	Max Working Pressure:8bar Double acting: 2.5bar~8bar Single acting: 4.5bar~8bar	Nominal pressure	PN10, PN16
Enviroment Temperature	Standard:-20~+80℃	Body Material	Carton Steel, Cast Iron, Stainless Steel (304, 304L, 316, 316L)
Disc Material	Stainless Steel (304, 304L, 316, 316L)	Medium	Water, gas, oil, etc.
Medium Temperature	PTFE:-40~+180℃	Seat Material	NBR, EPDM, PTFE
Packing	PTFE	Available accessories	Solenoid valve, air filter pressure reducing valve, valve position feedback device, valve positioner, handwheel mechanism, etc.

Features of Cast Iron Wafer Butterfly Valve With Pneumatic Actuator

Reliable technology, economical and applicable, simple and compact structure, small size, light weight and low cost

Butterfly valve sealing materials include nitrile rubber, fluorine rubber, edible rubber, and PTFE lining, so the sealing performance is good.

Installed in a high-altitude secret passage, it is easy to operate through the control of a two-position five-way solenoid valve, and the flow medium can also be adjusted.

The fluid resistance is small. When the medium and large diameter pneumatic butterfly valve is fully opened, the effective flow area is large, and the opening and closing is quick and labor-saving. The disc lever can be opened and closed by rotating 90 degrees. Since the medium force of the disc lever on both sides of the rotating shaft is close to the same, The torque generated is in the opposite direction, so the opening and closing torque is small, and good sealing can be achieved under low pressure.

Dimension of Soft Seal Pneumatic Butterfly Valve

dimension of D671X pneumatic butterfly valve

Valve Model		Acuator Model	Outline Size					Connecting Size
DN	in	Acuator Model	L	L1	L2	H	H1	D	D1	n-φd
50	2″	AT052DA/AT063SR	42	141/159	71/83	269/281	68	52.9	120	4-23
65	2 1/2″	AT063DA/AT075SR	44.7	159/211	83/95	283/303	75	64.5	136.2	4-26.5
80	3″	AT063DA/AT083SR	45.2	159/248	83/107	289/309	93	78.8	160	8-18
100	4″	AT075DA/AT092SR	52.1	211/269	95/123	320/338	104	10.4	185	4-24.5
125	5″	AT083DA/AT092SR	54.4	248/269	107/123	351/366	118	123.3	215	4-23
150	6″	AT105DA/AT125SR	55.8	269/345	123/152	380/405	133	155.6	238	4-25
200	8″	AT125DA/AT140SR	60.6	345/409	152/172	435/477	165	202.5	295	4-25
250	10″	AT140DA/AT160SR	65.6	409/438	172/187	509/552	197	250.5	357	4-29
300	12″	AT160DA/AT190SR	76.5	438/550	187/215	597/622	224	301.6	407	4-29
350	14″	AT190DA/AT210SR	76.5	550/600	215/240	653/688	267	333.3	467	4-30
400	16″	AT190DA/AT240SR	86.5	550/633	215/262	720/787	309	389.6	515	4-30
450	18″	AT210DA/AT240SR	105.6	600/633	240/262	772/858	328	440.51	565	4-30
500	20″	AT240DA/AT270SR	131.8	633/730	262/330	867/1004	361	491.5	620	4-33
600	24″	AT270DA/AW25S	152	730/1700	330/-	998/1220	459	592.5	725	4-36
700	28″	AW25/AW28S	163	1320/1970	/	1116/1282	520	695	840	4-36
800	32″	AW28/AW35S	188	1430/2700	/	1330/1007	591	794.7	950	4-39

Ordering Instructions

To place an order with YUECHI for automotive solutions for valve applications, adhere to the following guidelines:

Valve

Specify the type of valve (e.g., ball valve, globe valve). Provide information on operational pressure. Specify valve size. Indicate the type of sealing (hard-sealed or soft-sealed). Clearly state the media the valve will handle. Specify the operating temperature.

Pneumatic Actuator

Choose between double-acting and spring-return configurations. Specify whether normally closed or normally open options are needed.

Solenoid Valve Type

Indicate whether a double-solenoid or single-solenoid valve is required. Specify the supply voltage. Specify if an explosion-proof type is necessary.

Limited Switches Box Type

Choose between a basic or explosion-proof type.

Valve Positioner Type

Specify the current signal type. Specify the air supply signal type. Indicate if electric-pneumatic converters are required. Specify the desired explosion-proof grade.

Air Filter & Regulator

Specify requirements for the air filter. Specify requirements for the solenoid valve. Specify requirements for the limit switches box.

Manual Gear Operator

Specify if a declutchable worm gear operator is required.

Customized Solutions

Provide details about any specific accessories required from a designated brand.

Once this information is gathered, contact YUECHI’s sales or customer service department to place your order. Ensure all specifications are accurately communicated to receive the most suitable automotive solutions for your valve applications.