The pneumatic valve is a special type of valve that is commonly used in chemical, pharmaceutical, and other applications where the flow of gases or liquids needs to be controlled. This type of valve mainly consists of a valve body, a diaphragm and a pneumatic actuator. The valve body is a closed housing, the diaphragm is an elastic membrane that can be bent, and the pneumatic actuator is a device that controls the movement of the diaphragm.

Model representation

WH

-600

—Q1

—C1

—F

—16

—P

—25

—D1

—B

—W2

—B2

—L

>1. Weiheng brand

>2. Drive mode

>3. Body type

>4. Connection

>5. Sealing material

>6. Nominal pressure

>7. Body material

>8. Nominal diameter

>9. Control mode

>10. Explosion-proof grade

—20~150℃

>12. Attachment Options

>13. Three-way flow direction

1~7 required, 8~13 optional

1 codename		5 codename	Sealing material	10 codename	Explosion-proof rating
WH	Weiheng brand	F	PTFE	B	ExdIl BT4 Gb Flameproof Explosion-Proof Type
		PPL	Para-polyphenylene	BZ	ExdllCT5 Gb Flameproof Explosion-proof Type
2 code name	Drive mode	H	Metal hard sealed	BC	Exdll CT6 Gb Flameproof Explosion-Proof Type
600	Pneumatic actuator series	Y	cemented carbide	BM	ExmbllT4 Gb Pouring Explosion-proof Type
900	Electric actuator system	X1	Nitrile rubber NBR	BA	Exiall CT6Ga Intrinsically Safe Explosion-Proof Type
2001	Row plastic actuator angle seat valve series	X2	Natural rubber NR
2002	Stainless steel actuator angle seat valve series	X3	EPDM	11 codename	Medium temperature
		X4	Fluoroelastomer FPM	W1	-20-80C
3 codename	Body type	X5	Food grade silicone rubber SI	W2	-20-150C
Q1	Two-way valves	F46	Fully lined with polyperfluoroethylene propylene FEP	W3	-20-250C
Q2	Three-way valve	PFA	Fully lined with soluble PTFE PFA whole	W4	-29-425C
Q3	Four-way valve	F4	Fully lined with PTFE	W5	-29-650C
Q4	Mounted ball valves	N	nylon	W6	-196-60C
Q5	V-ball	TC	lined with ceramic	......	......
Q6	Thin ball valves	J	Adhesive lining	It can be designed and manufactured according to customer requirements with special temperature
Q7	Sanitary ball valves	PEEK	Polyetheretherketone
Q8	Plastic ball valves	W	When the ring	12 codenames	Accessory selection
Q9	High vacuum ball valves	......	......	B1	2-position 3-way solenoid valve
Q10	The whole village fluorine ball valve	Other special sealing materials can be designed and manufactured according to customer requirements		B2	2-position 5-port solenoid valve
Q11	Cryogenic ball valves			B3	2-position 3-way explosion-proof solenoid valve
Q12	Insulated ball valves	6 codename	Nominal pressure	B4	2-position 5-way explosion-proof solenoid valve
Q13	Eccentric hemispherical valve	......	......	B5	Filter pressure reducing valves
Q14	Tank bottom valve			B6	Limit switches
Q15	Ceramic ball valves	7 codename	Body material	B7	Explosion-proof limit switches
D1	Centerline soft-seal butterfly valve	Q	Ductile iron HT200	B8	Hand operation mechanism
D2	Triple eccentric butterfly valve	C	carbon steel	B9	Locators
D3	Sanitary butterfly valves	P	Stainless steel 304	......	......
D4	Plastic butterfly valves	R	Stainless steel 316
D5	Ventilation butterfly valves	PL	Stainless steel 304L	13 code name	Tee flow direction
D6	The whole village fluorine butterfly valve	RL	Stainless steel 316L	L	Three-way L-type BC switching
D7	High vacuum butterfly valve	U	PVC UPVC	T1	Three-way T-type C-port switch
D8	Powder butterfly valve	PP	Enhanced polypropylene RPP	T2	Three-way T-type AB switching
Z1	Gate valve	L	Aluminum alloy	T3	Three-way T-AC switching
Z2	Knife gate valves	......	......	T4	Three-way T-type B-port switch
J1	Shut-off valves	Other special valve body materials can be designed and manufactured according to customer requirements
J2	Bellows cutting valve
J3	Angle seat valves	8 codename	Nominal diameter
F1	Extended discharge valve	......	......
F2	Downward extension discharge valve
Other special valve body materials can be designed and manufactured according to customer requirements		9 codename	Control mode
		Z	Standard switching type
4 codename	Connection	T1	Integral switching type
C1	Female threads	T2	Integral adjustment type
C2	By order	T3	RS485 bus type
C3	Male thread	D1	Double-acting
C4	flange	D2	Double-acting modulating type
C5	KF vacuum chuck	E1	Single-acting normally closed
C6	weld	E2	Single-acting normally closed adjustment type
C7	Pair clamps	E3	Single-acting normally open
C8	Clamps	E4	Single-acting normally open adjustment type