ZAZPC series Electric single-seat control valve
III type electric single-seat control valve is driven by single-phase 220V power, receives 0~10mA DC or 4-20mA DC signal, automatically controls the opening of valve, to continuously adjust pressure, temperature, flow, liquid level and other process parameters. Widely used in power, metallurgy, petroleum, chemical, light industry, food department and other automatic control systems
|
Item |
Parameters |
Technical parameters |
|
1 |
Input signal (mA.DC) |
4~20 |
|
2 |
Input resistance |
250Ω |
|
3 |
Input channel |
3 isolated channels |
|
4 |
Basic error |
±2.5%;±5% |
|
5 |
Return difference |
2%;3% |
|
6 |
Dead zone |
3%;5% |
|
7 |
Rated flow coefficient error |
≤10%,when KV≤5, it's ±20% |
|
8 |
Leakage |
Double-seat, sleeve |
10 -3 X, rated flow of valve |
|
Single-seat, angle |
10 -4 X, rated flow of valve |
|
9 |
Critical flow coefficient Cf |
Single-seat |
Flow:0.92;flow to close:0.85 |
|
Double-seat |
0.84 |
|
Sleeve |
0.91 |
|
Angle |
Flow: 0.93;flow to close:0.80 |
Shanghai MeiKai YouDi Instrument Co., Ltd. is the marketing center of Shanghai Automation Instrumentation Co, Ltd which is a large state-owned stock company. It has several branches, for example, branch 3 produces temperature instrument, branch 4 produces pressure gauges, branch 7 valves, branch 11 actuators, etc.
The "Marketing Center" of Shanghai Automation Instrumentation Co., Ltd., established in 1995, after many years of market-oriented operation, now a comprehensive service company integrating company's spare parts, project market management, sales, technical support, and after-sales service as one. "Marketing Center" is e-commerce center which collects 150 series, more than 3, 000 new and old products from Shanghai Automation Insutrumentation. All the online products are qualified, widely used in electric power, metallurgy, petrochemical, electrical and mechanical, textile, food and national defense scientific research and other industries, popular among customers at home and abroad.
