Parts name

Material

Body

Ductile cast iron,cast steel,Alloy steel, stainless steel

Disc

Grey cast iron,ductile cast steel,cast steel,stainless steel and hoc material

Seal ring

Manifold rubber,such as EPDM, PTFE,NBR,Viton,CR

Stem

steel,ss**0,ss**4,ss**6

Packing

O-ring,flexible graphite

Material variety

Neoprene

Styene rubber

EPDM

PTFE

Silicon rubber

Fluorine rubber

Resistance highest temperature

*2°C

*3°C

**0°C

**2°C

**0°C

**4°C

Resistance lowest temperature

**0°C

**0°C

**0°C

***8°C

**0°C

**3°C

Suitable working temperature

≤*5°C

≤*0°C

≤**0°C

≤**0°C

≤**0°C

≤**0°C