ZJHN

Pneumatic diaphragm seat control valve, pneumatic control valve three, electric three shunt valve, regulating valve, pressure regulating valve, flow control valve, flow control, dynamic balancing valve, balancing valve, is a simple and intuitive flow regulating control device.
Regulating valve structure is composed of electric actuator or pneumatic actuator and valve body two parts. Straight travel mainly through single seat type and through engine type two, which have large flow capacity, unbalanced and stable operating characteristics, so it is usually suitable for high flow, low pressure drop and leakage occasions. Angular travel: V type electric control valve, pneumatic diaphragm valve, eccentric butterfly valve, etc.. This type of valve in the pipeline should generally be installed horizontally.
Application of flow control valve can be directly set according to the design flow in the network, the valve under the action of water flow, automatically eliminate the deviation of the remaining pipeline pressure head and pressure fluctuations caused by, no matter how the pressure changes in the system settings are maintained constant flow, the valve of these features make the pipe network flow control once completed, the transfer network work into a simple flow distribution, effective solution to the network hydraulic imbalance. Flow control valve is mainly used in: central heating (cold) and other water systems, so that the distribution of the flow of the pipe network, the elimination of water system hydraulic imbalance, to solve the problem of uneven heating and cooling, energy saving, power saving 15%-20%.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.

valve body： 

Body form: through two seater casting ball type valve
Nominal diameter：25~300mm 
Nominal pressure：PN1.6 4.0 6.4MPa
Connection form：Flange typeJB78-59 JB79-59
Material Science：HT200 ZG230—450 ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti 

Upper valve cover： 

Normal temperature type：-20℃~+200℃
Heat dissipation type：-40℃~+450℃
Glａnd form：Bolt pressing type
Packing: V PTFE packing, flexible graphite, stainless steel bellows。 

Valve assembly： 

Spool type: double plunger type valve seat guide
Flow characteristics: linear characteristics, such as the percentage of properties or fast opening characteristics
Material Science：1Cr18Ni9Ti 0Cr18Ni12Mo2Ti 

Enforcement agencies： 

Type: multi spring diaphragm actuator
Diaphragm material: butyl rubber clip reinforced polyester fabric
Spring range：0.02~0. 1、0.04~0.20MPa
Gas supply pressure：0.14 0.16 0.28MPa
Air source connector：M10×1
ambient temperature：-30~+70℃ 

Valve action type: gas - off type or gas - Open

Attachment: locator, hａnd wheel mechanism
Performance: (with locator)
Leakage: less than 0.5% of the rated flow coefficient Kv
Basic error：±1.5%
Return difference：1.5%
Dead zone：0.6%
Always point deviation：±1.5%
Adjustable range：30:1 

Flow coefficient Kv and stroke, allowable differential pressure： 

Nominal diameter（mm）	25			32	40	50	65	80	100	125	150	200
Valve seat diameter(mm)	15	20	25	32	40	50	65	80	100	125	150	200
discharge coefficientKv	4	6.3	10	16	25	40	63	100	160	250	400	630
Trip(mm)	16				25		40			60
Allowable differential pressure（MPa）	5.8			4.9	3.8	2.9	4.0	3.3	2.6	3.6	3.0	2.3

ZJHN pneumatic diaphragm seat regulating valve dimensions： 

Nominal diameter	Enforcement agencies	H		ΦA	H1	L
		Normal temperature type	Heat dissipation type			PN1.6	PN4.0	PN6.4
25	ZHA22	498	648	285	117	185	190	205
32	ZHA22	501	651	285	120	200	210	220
40	ZHA22	522	691	285	139	220	230	240
50	ZHA22	530	699	285	144	250	255	265
65	ZHA34	645	815	363	188	275	285	295
80	ZHA34	661	835	363	208	305	310	325
100	ZHA34	687	887	363	220	350	355	370
125	ZHA34	1234	1444	363	270	410	425	440
150	ZHA45	1242	1492	470	280	450	460	475
200	ZHA45	1394	1654	470	320	550	560	570