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Fisher™ DA Control Valve
Fisher D & DA Valves
Fisher DA single-port, high-pressure valves are widely used in oil and gas production industries.
These valves are especially useful for either throttling or on/off control of liquids or gases which are gritty, sticky, or have a tendency to build-up on internal valve parts. The DA valve is also useful in angle piping or other applications where a self-draining valve is desired.
Fisher™ DA Control Valve

Specs

Pressure Rating
Maximum Inlet Pressure: 4500 psig / 310 bar
Outlet Pressure Ranges: 50 mm Hg absolute -
15 psig / 1.0 bar
50 psig / 3.4 bar
100 psig / 6.9 bar
350 psig / 24.1 bar
Body Material
Brass or Nickel-plated Aluminum
Diaphragm Material
Buna-N, Ethylene Propylene, or Viton®
Seat Material
Teflon® (Inlet 500 psig / 34.5 bar maximum), CTFE, or Vespel®
Friction Sleeve Material
Inner: Teflon®
Outer: 316 Stainless Steel
40 Micron Filter Material
316 Stainless Steel
Remaining Parts
300 Series Stainless Steel
Port Size & Type
1/4 SAE, 1/4 NPTF, 1/4 MS33649
Flow Capacity
Cv = 0.06
Weight (without gauges)
Brass: 2.4 lbs / 1.1 kg
Aluminum: 1 lb / 0.5 kg
Additional Information
For custom modifications or a complete system solution, please contact your local sales office.

Features

  • Massive guiding positively aligns the valve plug in the seat ring for high pressure drop applications. The screwed-in seat ring completely encloses the seat ring gasket.
  • Screwed bonnet/body joint allows repair or maintenance with a minimum of tools.
  • Valve is available with VTC (ceramic) trim for service in very erosive applications. The valve plug is also available with a tungsten carbide tip and the seat ring can be fitted with a full-bore tungsten carbide insert for erosive service.
  • Valve body and end connection constructions are available for API, as well as ASME standards.
  • NACE trim and bolting materials are standard for all applications. These materials comply with the requirements of NACE MR0175-2002.