ZJHP precision small pneumatic thin film single seat regulating valveComposed of a pneumatic thin film multi spring actuator and a compact single seat valve.
It has reliable operational performance, precise flow characteristics, large adjustable range, small valve seat leakage, stable operation, low height and light weight of multi spring actuator, simple equipment, compact valve body structure, smooth flow channel, and a large flow coefficient.
Suitable for situations with strict requirements for leakage, low pressure difference before and after valves, and media with certain viscosity and low fiber content.
Pneumatic control valves can be divided into two types based on their switching modes: gas closed and gas open.
The gas shut-off valve consists of a positive acting actuator and a valve. When the input signal pressure changes from the lower limit value to the upper limit value, the valve switches from fully open to fully closed.
The pneumatic valve consists of a reaction actuator and a valve. When the input signal pressure changes from the lower limit value to the upper limit value, the valve switches from fully closed to fully open.
Technical parameters:
Valve body part
Valve body type: cast ball valve
Nominal diameter: DN20、25 、32 、40 、50 、65 、80 、100 、200
Nominal pressure: PN 1.6、2.5、4.0、6.4、10Mpa
ANSI 150、300、 600Lb
JIS 10K、20K、30K
Connection method: flange: FF、RF、RTJ、 class
Welding: SW、BW
Flange distance: in accordance with IEC 534
Valve cover form: standard type, extended type (heat dissipation, low temperature, bellows sealing)
Packing: V-shaped polytetrafluoroethylene, flexible graphite packing, etc
Sealing gasket: metal clip graphite sealing gasket
Execution mechanism: Pneumatic: Thin film multi spring actuator, pneumatic open, pneumatic closed, double acting cylinder actuator
Electric: Regular 381L PSL, Explosion proof 381L Series
Positioner: Electric valve positioner, intelligent digital positioner
Attachment: Electromagnetic valve, valve position feedback device, manual control mechanism, holding valve, air filter pressure reducer, etc
Valve internal components
Valve core type: single seat, sleeve type valve core
Traffic characteristics: equal percentage, linear, fast opening
Internal material: Please refer to the appendix for standard material combinations, operating temperature and pressure ranges
Valve body material: WCB, WC9, CF8, CF8M, etc
Valve cover material: WCB、WC9、CF8、CF8M
Valve core material: 304, 304+STL/PTFE, 316, 316+STL/PTFE

Packing material: "V" - shaped PTFE, flexible graphite, corrugated pipe

VALVE SIZE		L						H1	H2	h1	C	actuator
inch	mm	ANSI 150 PN16、25		ANSI 300 PN40		ANSI 600 PN64、100
March 4th	20	184	7.25	184	7.25	206	8.12	425	53	213	288	ZHB-22
1	25	184	7.25	184	7.25	210	8.25	435	58	218	288	ZHB-22
November 4th	32	200	7.87	200	7.87	251	9.88	448	70	231	288	ZHB-22
1 1/2	40	222	8.75	222	8.75	251	9.88	448	75	231	288	ZHB-23
2	50	254	10	254	10	286	11.25	487	83	255	288	ZHB-23
21/2	65	276	10.88	276	10.88	311	12.25	628	93	311	360	ZHB-34
3	80	298	11.75	317	12.5	337	13.25	645	98	328	360	ZHB-34
4	100	352	13.88	368	14.5	394	15.5	656	115	328	360	ZHB-34
5	125	420	16.53	400	15.75	500	19.69	806	125	389	470	ZHB-45
6	150	451	17.75	473	18.62	508	20	857	143	440	470	ZHB-45
8	200	600	21.38	568	22.38	610	24	926	180	514	470	ZHB-45

Ordering Notice: Please fill in the "Specification Sheet" or indicate the following content when placing an order:
1. Product model
2. Nominal pressure
3. Nominal diameter and rated flow coefficient Kv
4. Signal pressure and spring range
5. Traffic characteristics
6. Valve switching method
7. Working temperature range of the medium
8. Valve body and valve core materials
9. Is there an attachment? Please specify the attachment model
10. Are there any other special requirements