Small flow regulating 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
Small flow regulating valves
Overview
ZJHY type pneumatic diaphragm fine small small flow regulator is specially developed for small caliber flow regulating valves. The body uses thread connection, with small volume, light weight, easy installation and maintenance, etc advantages. When adjusting squalor medium, aimed at the problems of small gap throttling, pay attention to prevent intercepting phenomena. It is suitable for liquid, steam and other medium injection flow adjusting.
main parameters
| DN (mm) | G1/2 | G3/4 | ||||||
| seat diameter (mm) | 1.5* | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| flow coefficent Kv | 0.0025 | 0.08 | 0.12 | 0.20 | 0.32 | 0.50 | 0.80 | 1.00 |
| adjustable scope | 30:1 | |||||||
| PN | standard product 1.6 4.0 6.4、10MPa | |||||||
| core form | single plunger core | |||||||
| flow characteristic | linear | |||||||
| acting mode | pneumatic-open, pneumatic-close | |||||||
| working temperature | ordinary type -40～230℃，radiating type 230～450℃，special ordering 450～600℃ | |||||||
| flange standard | conforms to JB78-59、JB79-59, according to JB/79.1-94、JB/79.2-94、ANSI、JIS、DIN ordering and manufacturing | |||||||
| actuator | ZHA/B multi-spring pneumatic diaphragm actuator | |||||||
| equipped accessory | Locator, solenoid valves, air filter relief-pressure valve, position limit switches and feedback, emergency device, handwheel, etc | |||||||
Note: working temperature, nominal pressure, nominal diameter, beyond the scope of the product list, can contact with our company. *fluence coefficient < 0.08 need to special order
main technical performance indicators
Leakage: Class VI, less than the rated flow of 10-4
Back differential: without locator, less than 3% of the full stroke; with locator, less than 1% of full stroke
Basic error: without locator, less than ± 5% of the full stroke; with locator, less than ±1% of the full stroke
Dead zone: without locator, less than 3% of the full stroke; with locator, less than 1% of the full stroke.
Note: test used packing is PTFE packing
main parts material
body material：1G1Cr18Ni9Ti、316、316Lcore material：1Cr18Ni9Ti、316、316L
packing material： PTFE, flexible graphite
diaphragm material: NBR with nylon
allowed pressure differential
| actuator | ZHA(B)-11 | |||||||
| stroke（mm） | 10 | |||||||
| effective area (cm3) | 200 | |||||||
| air supply interface dimension | M16×1.5 | |||||||
| DN（mm） | G1/2 | G3/4 | ||||||
| seat diameter（mm） | 1.5 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| allowed pressure differential △P（MPa） | 6.4 | 5.2 | 4.6 | |||||
Note: (1) ZHA: positive actuators, ZHB reaction actuators. (2) if allowed pressure differential is unclear or maximum working pressure differential exceeds list range, please contact us.
external dimensions and weight
| DN(mm) | G1/2 | G3/4 |
| connecting length L(mm) | 92 | 92 |
| height H(mm) | 370 | 370 |
| H1(mm) | 30 | 30 |
| actuator width D(mm) | 230 | 230 |
| weight (KG) | 18 | 18 |
