ASpecification: DN50-DN400 B Brief introduction to the product:   F-503 rising stem iron gate valve meets the requirements of MSS-SP-70-Type1,and is mainly featured by rising stem,valve cap connection with bolts,bronze embedded parts and integral valve plate. C Pressure and temperature   Working pressure of steam:0.875MPa   temperature: 178 º C   Working pressure of water,oil,gas:1.4MPa D Materials   Valve body/valve cap/valve disc:Cast iron Valve stem:Forged brass   Valve seat:Bronze