《蒸气锅炉安全监察规程》中对压力表装置有下列要求 :一、应装置在便于观察和吹洗的位置 ,并应防止受到高温、冰冻和震动的影响。二、应有存水弯管。存水弯管用钢管时 ,其内径不应小于 10ｍｍ ;用铜管时 ,其内径不应小于 6ｍｍ。压力表和存水弯管之间应装有旋塞 ,以便吹洗管路 “Steam boiler safety supervision regulations” on the pressure gauge device has the following requirements: First, should be installed in the easy observation and purging position, and should be protected against high temperatures, freezing and vibration. Second, there should be trapped. Water pipe with a pipe, its diameter should not be less than 10mm; with brass, its diameter should not be less than 6mm. A cock should be fitted between the pressure gauge and the trap to purge the pipe