设计规范：

设计制造：GB/T 12235， DIN EN 13709:2003

结构长度：GB/T 12221, DIN EN 558-1

连接尺寸：HG/T 20592, DIN EN 1092-1

压力-温度： GB/T 9131 ASME B16.34 HG 20592

试验-检验： GB/T13927 GB/T 9092 API 598

氦质谱检漏：API 602 MSS SP-117

应用：适用于精确控制气体、液体等介质工艺参数如压力、流量、温度、液位保持在给定值。特别适用于泄漏量要求高的场合。

设计特点：

1：流体通道呈S流线型、压降损失小，允许压差大，噪音小，符合环保要求。

2：气动单座阀可调范围大，固有可调比为50。

3：活塞式薄膜外形的执行器更适宜高频繁的工作，寿命测试为100000次。

4：独有波纹管密封，提高使用寿命，并确保流量特性良好。 

执行器：电动，薄膜型气动，活塞型气动

选配：限位开关，过滤器，电磁阀，应急手轮

Application: Suitable for precise control of gas, liquid and other media process parameters such as pressure,flow, temperature, level at a given value. Particularly suitable for leakageswhere a high level of leakage is required.

Design features:

1: fluid channel is S streamline, small pressure drop loss, allowable differential pressure, low noise, in line with environmental requirements.

2: Pneumatic single seat valve adjustable range, inherent adjustable ratio of 50.

3: Piston type film shape actuator is more suitable for high frequency work,life test is 100000 times.

4: Exclusive bellows seal to improve service life and ensure good flow characteristics.

Actuators: electric, diaphragm type pneumatic, piston type pneumatic

Options: limit switches, filters, solenoid valves, emergency handwheels