Evdos - Single Action Small Orifice Air Relief Valve

Type 250 : dn 25 ( 1′ <` < ) type 251  with flange dn 25 – 40/65 – 80 – 100 – 125 – 150 – 200. Type 252  with flange dn 25 – 40/65 – 80 – 100 – 125 – 150 – 200 and   ball valve.