Stainless steel welding pneumatic angle seat valve

Body material	SS304,SS316,SS316L
Seal material	F46
Nominal pressure	1.6MPa
Valve structure	Y-type
Control type	Single acting normally closed, normally open, double acting
Temperature range	F46:-30~220 Degrees
Applicable medium	Water, oil, gas,steam,etc
Optional accessory	Solenoid valve, limit switch box, positioner, handle wheel, etc

Product parametersWorking principlePneumatic accessory

Standard technical parameters

Body material:304、316、316L

Spool material: 304、316、316L

Seat material: PTFE、 F46

Nominal size: DN15-DN80mm

Applicable temperature: PTFE:-30℃～180℃

F46: -30℃～220℃

Actuator must be used stainless steel material

Ambient temp.:-30℃～80℃

Nominal pressure: 1.6Mpa

Connection type: Welding

Design standard: GB, ANSI, DIN, ISO

Control type: Single acting, air to open type

Single acting, air to close type

Double acting

Actuator material: Polyamide PA, stainless steel

Optional accessory: Solenoid valve, limit switch box, positioner, etc.

Welding pneumatic angle seat valve

Outline size drawing:

Type specification table:

Size	Inch	Welding connection
Size	Inch	B	L	L1	L2	H
DN15	1/2’	15	155	100	62	120
DN20	3/4’	20	160	120	62	130
DN25	1’	25	185	140	76	160
DN32	1-1/4’	35	215	155	76	195
DN40	1-1/2’	38	225	170	76	245
DN50	2’	48	290	190	96	295
DN65	2-1/2	68	350	220	114	325
DN80	3	80	380	250	114	360

Size	Inch	Inner diameter	Kv Value	The max. pressure differential	Air supply	The cylinder bore	Flow direction
Size	Inch	Inner diameter	Kv Value	The max. pressure differential	Air supply	The cylinder bore	Flow direction
DN10	3/8’	10	3.7	0-16bar	4-7bar	50	Steam, gas, Flow above seat
DN15	1/2’	15	4.2			50
DN20	3/4’	20	8.0			50
DN25	1’	25	19.0			63
DN32	1-1/4’	32	27.5			63
DN40	1-1/2’	40	42.0			63	Liquids, gas Water hammer-free Flow below seat
DN50	2’	50	55.0			80
DN65	2-1/2’	65	90			100
DN80	3	80				100
DN100	4	100				125

Pneumatic actuator working principle

Control mode:

According to the site condition has the following three kinds of control mode, the reasonable selection of the control method can make your valves service life more longer, more convenient operation, cost savings.

Normally open type user: Suitable for pneumatic valve in the working time longer occasion. When the valve is normally open spring does not load external gas source thrust, then the valve fatigue to a minimum. Because it is by the air pressure to close valve, so need filed air pressure stability, air supply reliable.

Normally closed type user: Suitable for pneumatic valve is in the closed time working longer occasion. For depends on the spring to close, when air pressure to drive the piston push spring, valve open. So for the normally closed user this valve service life more long, gas more economical. At the same time when the air supply fails, the valve is in the closed state, this control state is the most widely used.

Double acting type user: Double acting type refers to the two chambers can be input compressed air separately, realize the two-way movement of the cylinder, no spring in the cylinder, the valve opening and closing rapidly, and can be used for large stroke valve, because it is by air pressure to close valve, so need the field gas source stability, air supply reliable.

Pneumatic accessory

NO	1	2	3	4
Name	Positioner	Limit switch	Switch prompt feedback	Solenoid valve
Input signal	4-20Ma, 0-5v, 1-10v			AC220V; DC24V
Output signal	Optional: 4-20mA, 0-5v, 1-10v	Built-in two passive contact switch	Built-in float switch
Function	The remote flow control, temperature control	Feedback valve open and closed postion	Site operation beservation	Solenoid valve losing and get electricity, control the air reversing, realize the pneumatic valve switch.