Main parts materials: 
Valve body, valve cover: ZG230-450, ZGlCr18Ni9Ti 
Spool, the valve seat: 1Cr18Ni9T,  Levin Titanium Alloy Welding Division + 1Cr18Ni9Ti 

stuffing : PTFE  flexible graphite PTFE
Gasket: Rubber,, graphite spiral wound gasket 
Membrane covered: A3   1Cr18Ni9TI
Corrugated Diaphragm: NBR folder enhanced polyester fabric 
Spring: 60Si2Mn 
Stem, putting: 2Cr13, 1Cr18Ni9Ti 

 

 

Ordering Information:
1. Product name and model
2. DN
3. Rated flow coefficient KV
4. Nominal pressure and differential pressure
5. Valve and valve components of materials
6. Connection
7. Transmission
8. Flow characteristics
9. Suitable temperature