Pneumatic diaphragm control valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Pneumatic diaphragm control valves
features
ZJHG type pneumatic diaphragm regulator (hereinafter referred to as pneumatic control valve) adopts "mountain" shape surface between diaphragm and body for the sealing, isolated from outside (without stuffing box), body flow is simple and small resistance, rated flow coefficient is large, inner and outer leakage is zero when valve closed, can cover a coating of anti-corrosion, Shanghai yihuan produced pneumatic diaphragm regulator is particularly suitable for poisonous, corrosive medium or not allow pollution medium regulation.
The product performance index implement GB/T4213-92structure
Pneumatic diaphragm control valve constructral diagram
technical parameters and performance indicators
body：WCB、HT200、ZG25, rubber lined, fluoroplastic
bonnet：HT200、ZG25
The diaphragm materials: DingQuan glue, natural rubber, ptfe
bellow diaphragm: NBR clip enhanced polyester fabric
diaphragm cover：A3
spring：60Si2Mn
body lining material and applicable scope：
Without the liner (-10～+175℃) applies to the corrosive medium
Soft rubber (-10～+85℃ )good corrosion resistance, suitable for cement, clay, coal-dust, dry fertilizer etc
Hard rubber (-10～+85℃) applicable inorganic salts, hydrochloric acid, alkali, plated solution, soft, chloride, chlorine, etc
Neoprene (-10～+105℃), applicable to animal, vegetable oil and grease, PH range change very corrosive slurry. Good abrasion resistance
DingQuan glue (-10～+120℃) anticorrosion properties and wear resistance) good, for most of the inorganic acid and acid corrosion resistance of mortar
Fluorine 46 (-20～+190℃) applies to sulfuric acid, hydrochloric acid, sodium hydroxide etc. Strong corrosive medium
The diaphragm material pledges and the applicable scope:
DingQuan glue (B) (-40～+100℃) most inorganic acid as hydrofluoric acid, phosphate, sulfate, etc, also suitable for various alkali and salt
The natural rubber (Q) (-50～+100℃) mainly used to purify water, mineral and acrylic acid medium of minerals
Ptfe (10～+150℃) excellent chemical stability, strong acid, strong alkali resistance, and corrosion of strong oxidant
detail technical parameters
| 公DN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |||
| rated flow coefficient Kv | without lining | 9.8 | 19 | 32 | 48 | 63 | 108 | 158 | 270 | 360 | 518 | 1114 | ||
| with lining | 7.8 | 17 | 28 | 41 | 55 | 87 | 127 | 240 | 311 | 415 | 1121 | |||
| rated stroke L(mm) | 8 | 10 | 12 | 16 | 24 | 30 | 34 | 36 | 44 | 55 | 65 | |||
| diaphram effective area Ae(cm2) | 280 | 400 | 600 | 1000 | ||||||||||
| PN(MPa) | 0.6 1.0 | |||||||||||||
| intrinsic flow characteristic | equal percentage | |||||||||||||
| working temperature t（℃） | ≤150 | |||||||||||||
| signal scope Pr(Kpa) | 20～100 、 40～200 、 80～240, section width:20～60 、 60～100 | |||||||||||||
| intrinsic error % | with locator | ±2.0 | without locator | ±10 | ||||||||||
| back differential % | ±1.5 | ±8 | ||||||||||||
| dead zone % | ±1.5 | ±6 | ||||||||||||
| start and terminal error % | ±2.0 | ±10 | ||||||||||||
| rated stroke erroe % | ±2.5 | |||||||||||||
| allowed leakage L/h | leakage is zero within allowed pressure differential | |||||||||||||
external dimensions (unit:mm)
| DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
| L | 135 | 145 | 160 | 180 | 210 | 250 | 300 | 350 | 400 | 460 | 570 |
| H1 | 410 | 418 | 428 | 474 | 497 | 530 | 540 | 560 | 585 | 600 | 640 |
| H2 | 52.5 | 57.5 | 67.5 | 75 | 82.5 | 90 | 100 | 110 | 135 | 150 | 190 |
| A | 282 | 360 | 470 | ||||||||
