PRODUCTION PRESSURE OPERATED GAS LIFT VALVES

WF SERIES GAS LIFT VALVES
The Opti-Flow WF Series gas lift valves are spring loaded, production pressure operated valves for installations using tubing pressure to open and close the valve. Since the force of the preset spring tension holds the valve stem on seat, there is virtually no downhole temperature effect on the operation of the valve. The integral reverse flow check valve provides protection from production fluid flow into the casing. Tubing pressure is communicated to the bellows through a crossover seat.

WF Valve Series
  • The WF-1 model is a 1” O.D. valve

Applications:
For intermittent or continuous gas lift. Excellent choice for dual gas lift systems and applications where injection pressure is unstable

Features:
  • Spring loaded non-temperature sensitive valve
  • Maximum travel stop increases cycle life of bellows
  • Integral reverse flow check valve to prevent tubing-to-casing communication
  • Three-ply Monel® bellows
  • Accepts all common top latches
  • Silicon dampening fluid minimizes throttling effects
  • Replaceable floating Monel® or tungsten carbide seat
  • Silver-brazed bellows connections
  • Guidance system designed to prevent corkscrew of the bellows
  • Stainless steel or Monel® materials available
  • Pressure rating up to 1800 psi Ptro maximum
  • Temperature rating of 250º F (standard service)
  • Port sizes from 1/8” to 1/4”
  • Standard Nitrile® packing element system with other packing materials available
  • High pressure spring available for high set pressures

WF SERIES SPECIFICATION GUIDE

Valve
Series
Model

Ab
Effective
Bellows Area
(sq. in.)

Port
Size
(in.)

Ap*
Area
Of Port
(sq. in.)

Ap/Ab
Ratio

1-(Ap/Ab)

PPEF
Ap/Ab
1-(Ap/Ab)

WF-1

0.31
0.31
0.31
0.31

1/8
5/32
3/16
1/4

0.014
0.021
0.029
0.052

0.044
0.067
0.095
0.166

0.956
0.933
0.905
0.834

0.046
0.072
0.105
0.199

Compatible running and pulling tool information available upon request

Note: The illustration is shown with a ported latch installed on the circulating valve. The latch is not an integral part of this valve and is purchased separately

 

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