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ZJHP Compact Pneumatic Single-Seat Control Valve

Name: ZJHP Compact Pneumatic Single-Seat Control Valve
Brand: WEYO AUTO TECH
SKU: ZJHP
Availability: InStock

Product Details

Place of Origin: China

Brand Name: WEYO

Model Number: ZJHP

Payment & Shipping Terms

Minimum Order Quantity: Negotiable

Price: Based on oroiect reauirements

Packaging Details: Customized packaging to protect products

Delivery Time: 7 - 15 days for small orders, 15 - 30 days for large orders

Payment Terms: L/C, T/T

Supply Ability: 5000 units per month for small parts. 1000 units per month for large parts

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Product Details

Product Description

Highlight:
                                    compact control valves, compact pressure reducing valve, pneumatic control valves
                      

ZJHP Compact Pneumatic Single-Seat Control Valve

It is a new generation of control valve launched in the 1980s that complies with IEC standards, suitable for process control systems with various media fluids and process conditions.

In addition to the common advantages of pneumatic control valves, it also features reliable action performance, precise flow regulation, a large adjustable range, stable operation, and small leakage. It can achieve high-quality control effects in extensive applications across various industrial sectors.

Structural Principle:
The compact pneumatic single-seat control valve consists of a ZHA (B) type pneumatic multi-spring diaphragm actuator and a VJP type low-flow-resistance straight-through single-seat valve.

After the pneumatic signal pressure sent by the regulating instrument is input into the diaphragm chamber of the pneumatic diaphragm actuator, the push rod moves to drive the valve core, changing the opening cross-sectional area of the valve to achieve the purpose of regulating the medium flow. The stroke of the valve core has a corresponding proportional relationship with the input signal pressure.

Main technical indicators
Nominal diameter DNmm					20				25	40		50	65	80	100	150		200
Nominal diameter DNmm					10	12	15	20	25	32	40	50	65	80	100	125	150	200
Rated flow coefficient			Linear		1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690
Rated flow coefficient			Equal percentage		1.6	2.5	4	6.3	10	16	25	40	63	100	160	250	400	630
Inherent flow characteristic					Linear；Equal percentage
Inherent turndown ratio					50∶1
Nominal pressure (MPa)					0.6；1.6；4.0；6.4
Operating temperature (℃)					-20～200；-40～250；-40～450；-60～450
Ambient temperature (℃)					-40～85
Air supply pressure (MPa)					0.14；0.25；0.4
Model of matched actuator					ZHAB-22					ZHAB-23			ZHAB-34			ZHAB-45
Spring range (kPa)				Air-to-close	20～100；40～200；80～240
Spring range (kPa)				Air-to-open	20～100；40～200；80～240
Allowable pressure difference MPa	Air-to-close type	20～100		0.14	6.4	6.19	3.96	2.23	1.43	0.87	0.56	0.35	0.34	0.22	0.14	0.15	0.1	0.06
		20～100		0.25	6.4	6.4	6.4	6.4	6.4	5.68	3.64	2.3	2.21	1.43	0.91	0.95	0.66	0.37
		40～200		0.4	6.4	6.4	6.4	6.4	6.4	6.4	5.04	3.18	3.06	1.98	1.26	1.32	0.92	0.52
	Air-to-open type	20～100		0.14	4.64	3.09	1.98	1.11	0.71	0.44	0.28	0.18	0.17	0.11	0.07	0.07	0.05	0.03
		40～200		0.25	6.4	6.4	5.94	3.34	2.14	1.31	0.84	0.53	0.51	0.33	0.21	0.22	0.15	0.09
		80～240		0.4	6.4	6.4	6.4	6.4	4.99	3.05	1.95	1.25	1.18	0.78	0.5	0.51	0.36	0.21

Installation and Operation Notes:

● It should be installed vertically on horizontal pipelines. In special cases where horizontal or inclined installation is required, supports should generally be added.

● It should be installed close to the ground or floor slab for ease of maintenance and inspection. For those equipped with a valve positioner or handwheel mechanism, it is particularly important to ensure convenient observation, adjustment, and operation.

● A bypass pipeline is generally provided to switch to manual operation when the automatic control system fails or the control valve is being maintained, so as not to stop production.

● When equipped with a handwheel mechanism, the bypass pipeline can also be omitted for manual operation, and it can also be used to limit the opening of the valve. When not in use, the handwheel mechanism must be restored to its original neutral position to facilitate the normal operation of the automatic control system.

● During installation, the medium flow direction should be consistent with the direction indicated on the valve body.

● Before installing the control valve, the pipeline should be cleaned of dirt and welding slag. After installation, fully open the control valve, clean the pipeline and valve, and test the tightness of all connections.

Overall dimensions
Nominal diameter	L			H		H1				φA	H2
Nominal diameter	PN16	PN40	PN64	Ordinary	High temperature	PN6	PN16	PN40	PN64	φA	H2
20	181	194	206	398.5	548.5	45	52.5		65	285	280
25	184	197	210	410.5	560.8	50	57.5		70	285	280
40	222	235	251	455	620	65	75		85	285	307
50	254	267	286	457.5	627.5	70	82.5		90	285	307
65	276	292	311	610	790	80	92.5		102.5	360	398
80	298	317	337	622	807	95	100		107.5
100	352	368	394	640	850	105	110		117.5
150	451	473	508	870	1130	132.5	142.5	150	172.5	470	530
200	600	600	650	890	1150	160	170	187.5	207.5	470	530
Note: The flange connection dimensions of this product are selected in accordance with the following standards: For a pressure of PN6, it is selected in accordance with GB216.3-84 Dimensions of Gray Cast Iron Pipe Flanges for 6 Bar. For a pressure of PN16, it is selected in accordance with GB4216.5-84 Dimensions of Gray Cast Iron Pipe Flanges for 16 Bar. For a pressure of PN40, it is selected in accordance with GB113.11-88 Integral Steel Pipe Flanges with Male and Female Faces for PN4.0MPa (40bar). For a pressure of PN64, it is selected in accordance with JB79-59 Cast Steel Flanges.

Ordering Information

Product model
Nominal pressure
Nominal diameter
Operating temperature
Rated flow coefficient
Inherent flow characteristic
Action mode
Spring range
Materials of valve body and trim
Accessories: Choose complete sets such as air filter pressure reducer, valve positioner (pneumatic, electrical), valve position switch, position retaining valve, handwheel mechanism, etc.
Spare parts

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