青岛汇丰水暖器材有限公司先导式安全阀GA49H-DN20产品的安装说明：
 

1：本先导式安全阀阀门产品应与A69Y-Pw54 10V型，DN150主安全阀进行配套使用。

2：先导式安全阀、脉冲式安全阀进行安装时应是严格垂直的角度 ，杠杆要保持水平状态，并注意管路内冲洗干净。

3：脉冲式先导式安全阀引出管与主安全阀的入口管间应保持一段较长距离 ，电接点压力表与主安全阀入口管两者间的相距范围不得小于5倍主安全阀入口管径，以避免当主安全阀动作时，产生排汽而影响电接点压力表、脉冲式先导式安全阀工作的正确性也会受到影响。

4：该阀与电磁铁一起装于专设的支别想上，先导式安全阀阀门上杠杆与电磁铁的连接注意要灵活不得出现卡涩的问题。
 

1：This valve shall be used with main satety valve A69Y-Pw54 10V ,DN 150 together.

2:Impulse safety valve shall be installed vertically and the lever shall be level.The popeline shall be washed clean.

3:A long distance between the leading pipe of the impulse safety valve and the inlet pipe of the main safety valve shall be kept.And the distance between the electric contace pressure meter and the inlet pipe of the main safety valve shall be no less than 5 times of the diameter of the inler pipe,for feat that the validity of the meter and the impulse safety valve may be affeoted by the steam relessing process of the main safety valve.

4:The valve and the electomagnets shall be placed together on a special gallow .The juncture of the valve and the electromagnets shall be flexible.with no phenomenon of seizure.