Small pneumatic single-seat control valve

Products > Control valve > Small pneumatic single-seat control valve

Small pneumatic single-seat control valve

Model: ZJHP type
Nominal diameter: DN20 ~ 200mm
Nominal pressure: PN1.6 ~ 6.4MPa
Ambient temperature: -30 ~ 70 ℃
Main material: steel (ZG230450), cast stainless steel (ZGICr18Ni9Ti, ZGICr18Ni12M02Ti), etc.
Flange Standard: JB / T79.1-94,792-94 and so on
shared:
Body
FormStraight through the single seat cast ball valve
On the bonnetStandard type: -17 ~ 230 ℃ Cooling type: 230 ~ 450 ℃ Low temperature type: -60 ~ 196 ℃ Bellows Sealed: -40 ~ 350 ℃
Cover formBolt compression type
FillerV-type PTFE filler, PTFE impregnated asbestos filler, asbestos textile filler, graphite filler

 

Valve assembly
Spool typeSingle-seat spool valve
Flow characteristicsEqual percentage characteristics and linear characteristics
MaterialStainless steel (1Cr18Ni9Ti, 1Cr18Ni12M02Ti, 17-4PH, 9Cr18, 316L), stainless steel heap too Lai Lai alloy, titanium and corrosion-resistant Taiwan gold.

 

Execution agency
TypeZHA / B multi-spring film actuator
ModelZHA / B-22ZHA / B-23ZHA / B-34ZHA / B-45ZHA / B-56
Effective area of cm23503505609001400
Travel mm10,16254040,60100
Spring range KPa20-100 (standard), 20-60, 60-100, 40-200, 80-240
Diaphragm materialNitrile rubber clip Nylon cloth, EPDM clip nylon cloth
Supply pressure140-400KPa
Air source interfaceRCl / 4 "
Ambient temperature-30 ~ 70 ℃

 

Valve action form
Air-off (B) - Valve open (FO) during loss of air; Valve open (K)

 

annex
Positioner, air filter pressure reducer, retention valve, travel switch, valve position transmitter, hand wheel mechanism

 

performance
ProjectWithout locatorWith locator
Basic error%± 5.0± 1.0
Backlash%≤3.0≤1.0
dead zone%≤3.0≤0.4
Always point deviation%Open airStart pointEarth 2.5± 1.0
end± 5.0± 1.0
Qi offStart point± 5.0± 1.0
endEarth 2.5± 1.0
Rated travel deviation%≤2.5
Leakage 1 / h0.01% X valve rated capacity
Adjustable range R30: 1

 

Rated flow coefficient Kv, rated stroke, equipped with actuator type
Nominal diameter DN (mm)
20253240506580100125150200
Seat diameter DN (mm)
10121520253240506580100125150200
Rated flow coefficient Kvstraight line1.82.84.46.91117.627.54469110176275440690
Equal percentage1.62.54.06.31016254063100160250400630
Rated stroke L (mm)
1016254060
Equipped with actuator model
ZHA / B-22ZHA / B-23ZHA / B-34ZHA / B-45

 

Dimensions and weight unit: mm
Nominal diameter20253240506580100125150200
LPN16 / 40181184220222254276298352410451600
PN64206210251251286311337394457508650
A
285285285285285360360360470470470
H1PN16 / 40128128152152160205205208273330364
PN64140140160160180210210220290340370
H2
298298298298298380380380510510510
H3PN16 / 40208208224228228334334342408453482
PN64220220240240240350350360420470500
H4
238238402402405627628635698702728
H5PN16 / 4053586873809098108123140168
PN646368758388100105125148170203
C
220220220220220270270270320320320
H6
180180180180180236236236310310310
Weight 
(kg)
PN16 / 402122243238626783132160245
PN6424253042527882102170190285
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