Fisher T205 Series Tank Blanketing Regulators

The T205 Series tank blanketing regulator is a direct-operated and spring-loaded regulator. The T205 Series maintains a slightly positive pressure to prevent a stored liquid from vaporizing into the atmosphere, reduces liquid combustibility, and prevents oxidation or contamination of the product by reducing its exposure to air.

Body Sizes

3/4 or 1-inch / DN 20 or 25

Maximum Allowable Inlet Pressure

Gray Cast Iron: 150 psig / 10.3 bar
WCC Carbon Steel, LCC Carbon Steel or CF8M/CF3M Stainless Steel: 200 psig / 13.8 bar

Maximum Outlet (Casing) Pressure

Gray Cast Iron: 35 psig / 2.4 bar
WCC Carbon Steel, LCC Carbon Steel or CF8M/CF3M Stainless Steel: 75 psig / 5.2 bar

Max Emergency Outlet Pressure to Avoid Internal Parts Damage

NBR, FKM or EPDM diaphragm: 35 psig / 2.4 bar
FEP diaphragm: 10 psig / 0.7 bar

Standard Temperature Capabilities

NBR: -20 to 180°F / -29 to 82°C
FEP: -20 to 180°F / -29 to 82°C
EPDM: -20 to 225°F / -29 to 107°C

High Temperature Capabailities

FKM: 40 to 300°F / 4 to 149°C
FFKM: 0 to 300°F / -18 to 149°C

Pressure Registration

Type T205: Internal
Type T205M: External

Spring Case Vent Connection

1/4 NPT

Diaphragm Case Control Line Connection (Type T205M)

1/2 NPT

Approximate Weight

17.7 pounds / 8 kg