Parts name

Material

Body

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

Disc

Grey cast iron, ductile cast steel,cast steel,stainless steel

Seal ring

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

Stem

2Cr13,stainless steel

Packing

O-ring,flexible graphite

Material variety

Neoprene

Styene rubber

EPDM

PTFE

Silicon rubber

Fluorine rubber

Resistance highest temperature

82°C

93°C

150°C

232°C

250°C

204°C

Resistance lowest temperature

-40°C

-40°C

-40°C

-268°C

-70°C

-23°C

Suitable working temperature

≤65°C

≤80°C

≤120°C

≤200°C

≤200°C

≤180°C

Nominal diameter

DN(mm)

40-1000

Nominal pressure

PN(mm)

1.0

1.6

Test pressure(Mpa)

Shell test

1.5

2.4

Test pressure(Mpa)

Seal test

1.1

1.76

Appropriate medium

Air,water,sewage,steam,coal,gas,oil

Drive modality

Handle,worm gear box, penumatic drive,electric drive