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Pneumatic sleeve control valve

3 Jul 2018 22:53:00 source:aen-valve.com browse:12189
Specifications
Drive type: pneumatic, electric
Nominal diameter: NPS 1 1/2” ~24” (DN40~DN600)
Nominal pressure: Class150~Class600 (PN16~PN100)
Temperature range: -196°C~540°C
Material range: carbon steel, stainless steel, duplex stainless steel, Inconel, Monel, Hastelloy, Ti, etc.
Leakage rating: ANSI Class IV, Class V
Bonnet type: standard type, extended type, low temperature type, bellows type
Main applications: gas or liquid medium, high pressure differential conditions without solid particles.
Product features: Can withstand high working pressure difference, excellent dynamic stability, multistage porous
sleeve has good noise reduction, antiscour and anticavitation functions.
  • Introduction
  • Technical Parameters

Pneumatic sleeve control valve product description

The ZJHM pneumatic sleeve control valve produced by Anshan AEN.TECH adopts a double seal structure, which consists of a multi-spring pneumatic film actuator and a small flow restrictor fine sleeve valve body, which is also known as the pneumatic diaphragm sleeve valve. Multi-spring actuators are low height, light weight and easy to equip. Fine small body flow channel is S-line type, pneumatic sleeve control valve has a compact structure, light weight, sensitive, low pressure drop, valve capacity, accurate flow characteristics, easy maintenance, etc., can be used for harsh working conditions. Pneumatic diaphragm sleeve control valve is especially suitable for occasions with low leakage requirements and large differential pressure between the front and rear of the valve. The main features of the pneumatic sleeve valve are as follows:

(1) Balanced double-sealed valve core allows unequal pressure to allow large differential pressure and stable operation.

(2) Large valve guide surface can improve the oscillation caused by eddy currents and shocks.

(3) The noise is reduced by about 10dB compared with ordinary single- and double-seat control valves.

(4) Simple structure, easy installation and maintenance.

  • valve body Parameters
  • Valve trim parameters
  • Actuator parameters
  • control valve Performance
Nominal diameter(DN) 20 25 32 40 50 65 80 100 125 150 200 250 300
Valve seat diameter(dn) 20 25 32 40 50 65 80 100 125 150 200 250 300
Rated flow
coefficient(KV)
straight line 10 11 17.6 27.5 44 69 110 176 275 440 630 1000 1600
Equal
percentage
6.3 10 16 25 40 63 100 155 250 370 580 900 1300
Allowable pressure
difference(MPa)
6.4 6.4 5.2 5.2 4.6 4.6 3.7 3.7 3.5 3.1 3.1 2.6 2.2
Nominal pressure(MPa) 1.6、2.5、4.0、6.4、10.0
Rated route(mm) 16 25 40 60 100
With actuator type ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B-45 ZHA/B-56
Valve cover form standard type(-17~+250℃)、High temperature type(+250~+450℃)、Low temperature type(-40~-196℃)、Bellows sealed type(-40~+350℃)
Capping form Bolt compression type
Seal packing V type PTFE packing、V type flexible graphite filler
Valve body material Cast Steel (WCB), Stainless Steel (CF8, CF8M, CF3, CF3M), Chrome Molybdenum Steel, Cast Steel Backing PTFE (WCB+F46)
Valve core form sleeve Guided valve core
Flow characteristics Linear, equal percentage
valve core material stainless steel (304、316、316L)
Actuator type ZHA/B Multi-spring film actuator
Actuator model ZHA/B-22 ZHA/B-23 ZHAB-34 ZHA/B-45 ZHA/B-56
Effective area(cm2) 350 350 560 900 1400
route (mm) 10、16 25 40 40、60 100
Spring range(KPa) 20~100(standard)、20~60、60~100、40~200、80~240
Diaphragm material Nitrile rubber clip nylon cloth, ethylene propylene rubber clip nylon cloth
Air supply pressure 140~400KPa
Air interface RC1/4"
Ambient temperature -30~+70℃
equipped with accessories Locator, air filter pressure reducer, position valve, route switch, valve positioner, handwheel mechanism, etc.
Form of action Air-to-close (B)—Valve open (FO) when deaeration; Air-opening (K)—Valve off (FC) when deaeration
Item Without positioner With positioner
Basic error % ±5.0 ±1.0
Backlash % ≤3.0 ≤1.0
dead zone % ≤3.0 ≤0.4
Starting to
end point
deviation %
Air open Starting point ±2.5 ±1.0
Starting point ±5.0 ±1.0
Air shut Starting point ±5.0 ±1.0
end point ±2.5 ±1.0
Rated route deviation % ≤2.5
Leakage L/h 0.01%× Valve rated capacity
Adjustable range R 50:1
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