L6 & L7 Series air operated liquid pump
Special Equipment · Pressure boosters
SC Hydraulic double-acting high-flow air-driven pumps available in two drive sections: L6 (6″ bore) up to 11,200 psi and L7 (7″ bore) up to 21,500 psi. Stainless-steel wetted hydraulic section and a double air-motor double-acting design deliver sustained flow well suited to subsea and process-control applications. Three ratios per range: L6 at 40:1, 60:1 and 100:1; L7 at 85:1, 135:1 and 227:1. Operate on 15–100 psi air drive with a consumption of 50–160 SCFM (L6) or 150–225 SCFM (L7). Remote pilot is built in as standard. Typical applications: subsea valve actuation, safety-shutdown valves, wireline control systems, blowout preventer (BOP) control, bolt tensioning, hydrostatic testing and press applications. Recommended for intermittent duty.
Technical data
- Air drive section
- L6: 6″ bore double-acting • L7: 7″ bore double air-motor double-acting
- Hydraulic section
- Stainless-steel wetted parts
- L6 ratios
- 40:1 • 69:1 • 115:1
- L7 ratios
- 85:1 • 135:1 • 227:1
- Max. outlet pressure L6 (100 psi air)
- 3,950 / 6,420 / 11,200 psi
- Max. outlet pressure L7 (100 psi air)
- 8,000 / 13,000 / 21,500 psi
- Displacement per cycle
- L6: 2.1 – 6.0 in³ • L7: 2.8 – 7.8 in³
- Air drive pressure
- 15 – 100 psi
- Air consumption
- L6: 50 – 160 SCFM • L7: 150 – 225 SCFM
- L6 connections
- 1¼″ NPT inlet / ½″ NPT outlet
- L7 connections
- 1¼″ NPT inlet / ½″ NPT or 13/16-16 (9/16″ O.D. tubing) outlet
- Remote pilot
- Built in as standard on both L6 and L7
- Available seals
- Buna-N standard; Viton, EPR and UHMWPE combinations
- Duty type
- Intermittent
