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Shanghai Yuhu Self Control Valve Co., Ltd
On site operating conditions of Shanghai Yuhu pneumatic high-temperature regulating valve
NegotiableUpdate on 05/25
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Overview
Our GWZJHP pneumatic high-temperature regulating valve is composed of a multi spring pneumatic diaphragm actuator and a low flow resistance high-temperature regulating valve body. The multi spring actuator has low height, light weight, and simple equipment.
Product Details
ZJHP/M-GW Pneumatic High Temperature Control Valve
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| ZJHP/M-GW Pneumatic High Temperature Control Valve |
1、 Overview of Pneumatic High Temperature Control Valve Products
The ZJHP/M-GW pneumatic high-temperature regulating valve of Shanghai Yuhu Company consists of a multi spring pneumatic diaphragm actuator and a low flow resistance high-temperature regulating valve body. The multi spring actuator has low height, light weight, and simple equipment. The flow channel of the pneumatic high-temperature regulating valve body is S-shaped, which has the advantages of compact structure, light weight, sensitive action, small pressure drop loss, large valve capacity, precise flow characteristics, and easy maintenance. It can be used in harsh working conditions. Pneumatic high-temperature control valves equipped with electric pneumatic valve positioning or pneumatic valve positioners can achieve automatic regulation and control of fluid media in process pipelines. Pneumatic high-temperature regulating valves are widely used to precisely control process parameters such as pressure, flow rate, temperature, liquid level, etc. of gases, liquids, steam, and other media to maintain them at given values. Pneumatic high-temperature regulating valves are particularly suitable for situations where the allowable leakage is small, the pressure difference before and after the valve is not large, and the temperature is high.
2、 Technical parameters of pneumatic high-temperature throttle valve
(1) Valve body parameters
| 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) | single-seat | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
| sleeve | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
| Allowable pressure difference (MPa) | single-seat | 3.8 | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0,7 | 0.6 | 0.5 | 0.3 | 0.1 |
| sleeve | 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, 16.0 | |||||||||||||
| Rated stroke (mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Model of actuator | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 | |||||||||
| Valve cover form | High temperature type (+250~+450 ℃) | |||||||||||||
| Cover form | Bolt compression type | |||||||||||||
| Sealing packing | V-shaped polytetrafluoroethylene packing, V-shaped flexible graphite packing | |||||||||||||
| Valve body material | Cast steel (WCB), stainless steel (CF8, CF8M, CF3, CF3M), chromium molybdenum steel, cast steel lined with PTFE (WCB+F46) | |||||||||||||
(2) Valve internal component parameters
| Valve core form | Single seat plunger valve core, sleeve guided valve core |
|---|---|
| flow characteristics | Linear, equal percentage |
| Valve core material | Stainless steel (304, 316, 316L) |
(3) Actuator parameters
| Configure actuator category | ZHA/B multi spring membrane actuator | ||||
|---|---|---|---|---|---|
| Model of actuator | ZHA/B-22 | ZHA/B-23 | ZHA/B-34 | ZHA/B-45 | ZHA/B-56 |
| Effective area (cm2) | 350 | 350 | 560 | 900 | 1400 |
| Stroke (mm) | 10. 16 | 24 | 40 | 40, 60 | 100 |
| Spring range (KPa) | 20-100 (standard), 20-60, 60-100, 40-200, 80-240 | ||||
| Membrane material | Nitrile rubber with nylon cloth, ethylene propylene rubber with nylon cloth | ||||
| gas supply pressure | 140~400KPa | ||||
| air connection | RC1/4' | ||||
| ambient temperature | -30～+70℃ | ||||
| Can be equipped with accessories | Positioner, air filter pressure reducer, holding valve, travel switch, valve position transmitter, handwheel mechanism, etc | ||||
| mode of action | Gas closed type (B) - valve position open when gas is lost (FO); Pneumatic opening (K) - valve position closed in case of gas loss (FC) | ||||
3、 Performance indicators of pneumatic high-temperature regulating valve
| project | Without locator | Equipped with locator | ||
|---|---|---|---|---|
| Basic error% | ±5.0 | ±1.0 | ||
| Return difference% | ≤3.0 | ≤1.0 | ||
| Dead zone% | ≤3.0 | ≤0.4 | ||
| Constant point deviation% | air open | starting point | ±2.5 | ±1.0 |
| starting point | ±5.0 | ±1.0 | ||
| Qi Guan | starting point | ±5.0 | ±1.0 | |
| destination | ±2.5 | ±1.0 | ||
| Rated travel deviation% | ≤2.5 | |||
| Leakage rate L/h | 0.01% x valve rated capacity | |||
| Adjustable range R | 50：1 | |||
Kind reminder: If you need detailed product information, please contact our technical or sales department,.
Related names: Pneumatic High Temperature Control Valve, Thermal Oil Pneumatic Control Valve, Steam Pneumatic Control Valve
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