Penumatic Double Seats Control Valve with Multi-Spring Diaphragm
Actuator, Class 300
PRODUCT INTRODUCTION
1. Description
The ZJHN pneumatic membrane double seat regulating valve adopts a
double guide structure and is equipped with multiple spring recruit
agencies. It has the advantages of compact structure, light weight,
sensitive action, large valve capacity, accurate flow
characteristics, easy disassembly and assembly. It is widely used
in precise control of gas, liquid, steam and other media process
parameters such as pressure, flow, temperature, liquid level to
maintain at a given value. It is especially suitable for occasions
with larger pressure difference and larger leakage and is not very
clean. This series of products has standard type, bellows seal
type, jacket insulation type and so on. The nominal pressure level
of products is PN16, 40 and 64, and the caliber of valve body
ranges from DN25 to 400. Suitable fluid temperature ranges from
-250 to +560 degrees. The standard of leakage is grade III and IV.
The flow characteristic is linear or percentage. Various varieties
and specifications are available.
2. Specification of Double Seats Control Valve
Valve Body
Structure:flowing through type globe valve with double-seated.
DN:25~300mm.
PN:1.6~10.0Mpa or class 150~class 600.
Connections:flanged type.
Material:WCB,HT200 ZG230-450 ZG1Cr18Ni9Ti.ZG0Cr18Ni12Mo2Ti.
Upper Cover
Normal Temp:-20°C~+200°C.
Heat Radiation Type:-40°C~+450°C.
Gland Connection:bolted type.
Packing:V type PTFE.FLEXIBLE GRAPHITE.S.S BELLOWS.
Valve Assembly
Valve Core:Double guiding&double-seated plug type.
Cv Features:Linear,Equal Percentage or Quick opening.
Material:1Cr18Ni9Ti0Cr18Ni12Mo2Ti.
Actuator
Model:Multi-spring diaphragm type actuator
Material of the diaphragm:NBR with reinforced polyester fabric.
Spring range:0.02~0.1/0.04~0.2Mpa.
Air Supply:0.14/0.16/0.28Mpa.
Air Supply Connector:M10*1.
Working Temp:-30~+70°C.
Valve Acting Type:air to close or air to open.
Accessories:positioner,,hand wheel.
Parameters:(with positioner.)
Leakage:<0.5%×Kv.
Intrinsic Erro:+/-1.5%.
Controlling Range:30:1.
3. Kv, Movement&Allowable Differential Pressure
| DN(mm) | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
| Size of seat(mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
| Flow coefficient Kv | 4 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 |
| Movement(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 |
| Note:It refers to the differential pressure when the valves in open
position. |
4. Steam Control Valve Outsize Drawing
| DN | Actuator | H | øA | H1 | L |
| Normal TEMP | Heat Radiator 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 |
If you require other sizes and valve design standards, please send
email to angela@tjfmcn.com to get the drawing.
5. Hydraulic Control Valve Packing with Plywood
Please feel free to contact with us at angela@tjfmcn.com or filling up an enquiry form instructed at the bottom.
You will get an effective response within 24 hours from TongJiang
Team.
CONTACT INFORMATION
Miss Angela
Mobile: +86 13588429004(Whatsapp)
Skype: angelazhuo1
E-mail: angela@tjfmcn.com
Tel No: +86 571 86991717
Official Website: www.zjtjvalve.com
