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Fisher™ T205 Series Tank Blanketing Regulators
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.

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Fisher™ T205 Series Tank Blanketing Regulators


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
Additional Technical Data
For additional technical information, contact your local Sales Office or refer to technical documentation.


  • Low-pressure setting and fast speed of response
  • Accurate control and small lockup pressure
  • Corrosion resistance
  • Easy conversion between constructions
  • Arctic Construction Option
  • FDA/USP Class VI Construction Option


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