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Shanghai Yuhu Self Control Valve Co., Ltd
ZMQF/H Pneumatic Three way Cut off Valve
NegotiableUpdate on 04/07
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Overview
ZMQF/H Pneumatic Three way Cut off Valve ZMQF/H Pneumatic Three way Cut off Valve I. Overview of Pneumatic Three way Cut off Valve Products Our company's ZMQF/H Pneumatic Three way Cut off Valve adopts a top guide structure and is equipped with a multi spring actuator
Product Details
ZMQF/H Pneumatic Three way Cut off Valve
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| ZMQF/H Pneumatic Three way Cut off Valve |
1、 Overview of Pneumatic Three way Cut off Valve Products
Our company's ZMQF/H pneumatic three-way cut-off valve adopts a top guide structure and is equipped with a multi spring actuator. Pneumatic thin film cut-off valve has the advantages of compact structure, light weight, sensitive action, S-shaped fluid channel, low pressure drop loss, large valve capacity, and easy disassembly and assembly.
The pneumatic three-way cut-off valve receives signals from the regulating instrument to cut off, open or change the flow direction of the medium, achieving automatic control of process parameters such as pressure, flow rate, temperature or liquid level. Pneumatic thin film three-way shut-off valves are widely used in automatic and remote control systems for various industrial sectors such as petroleum, chemical, metallurgical, power, light industry, textile, etc.
There are mainly two types of pneumatic three-way shut-off valve products: diaphragm type and piston type. There are three types of valve body structures: single seat, sleeve, and double seat (two position three-way). The sealing forms include packing sealing and corrugated pipe sealing. The nominal pressure rating of the product is PN10, 16, 40, and 64, and the nominal diameter range is DN20-200mm. The applicable fluid temperature ranges from -60 to 450 ℃. The leakage level is IV or VI. The traffic characteristic is fast opening.
2、 Product features of pneumatic three-way cut-off valve
(1) The pneumatic three-way cut-off valve adopts a multi spring actuator and a regulating mechanism connected by three vertical poles, which can reduce the overall height by about 30% and the weight by about 30%.
(2) The valve body is designed according to the principles of fluid mechanics as a low flow resistance channel with equal cross-section, increasing the number of rated flow systems by 30%.
(3) There are two types of sealing parts for valve internals: tight type and soft type. The tight type is made of hard alloy welding, while the soft type is made of high-quality materials, with excellent sealing performance when closing.
(4) The balanced valve internals increase the allowable pressure difference of the shut-off valve.
3、 Main technical parameters of pneumatic three-way cut-off valve
| Nominal diameter (mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated flow coefficient Kv | 8 | 12 | 17 | 29 | 43 | 70 | 110 | 165 | 275 | 440 | 690 | |
| Rated stroke mm | 8 | 12 | 20 | 25 | 40 | 60 | ||||||
| Effective area cm2 | 100 | 200 | 400 | 600 | 1000 | |||||||
| Allow leakage Dew volume |
hard seal | 1.2X10-7 x rated capacity of valve | ||||||||||
| Soft seal | VI level, no leakage | |||||||||||
| Allowable pressure difference (MPa) | ≤Nominal Pressure | |||||||||||
| Signal pressure KPa | 0-250 (thin film type) | |||||||||||
| Valve cover form | Standard Type (-17~+250 ℃), High Temperature Type (+250~+450 ℃), Low Temperature Type (-40~-196 ℃), Bellows Sealed Type (-40~+350 ℃) | |||||||||||
| Cover type | Bolt compression type | |||||||||||
| Sealing packing | V-shaped PTFE packing, impregnated PTFE packing, asbestos braided packing, flexible graphite | |||||||||||
| Valve core form | Dual directional dual seat valve core | |||||||||||
| flow characteristics | Quick opening feature | |||||||||||
