Factory Direct 900 Series DIN valve

900 German standard DIN valve safety valve 900 series 900 series 900 series valve German standard DIN German standard safety valve safety valve 900 series 900 series 900 series valve German standard DIN German standard safety valve safety valve 900 series 900 series German standard DIN safety valve relief valve 900 series 900 series 900 series valve German standard DIN German standard safety valve safety valve 900 series 900 series 900 series valve German standard DIN valve 900 series DIN 900 German standard safety valve German standard safety valve relief valve 900 series 900 series DIN valve when the valve also has other functions action or with other specific structure, the valve type code before reraise a phonetic alphabet, press the specified table. The second function of the second code name Function Name Symbol insulation type B low-temperature slagging type P type Q Da rapid fire type F (stem seal) Bellows type W slow-closing type H - - a low temperature means the allowable temperature -46 ℃ lower than the valve below.