Diaphragm pump LFP0085T series

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Overview
LEFOO LFP0085T is a 12V DC demand delivery pump designed for system integration where on‑demand water delivery at low to medium pressure is required. Test data shown refer to use with 3/8" tubing under specified test conditions.

Performance data and curves
Test conditions: inlet pressure 0 PSI, ambient temperature 25℃, water temperature 25℃, voltage 12V DC. Performance (approx.):
Discharge Pressure (PSI) | Flow Rate (GPM) | Flow Rate (LPM) | Current (A)
0 | 0.85 | 3.22 | 1.96
10 | 0.82 | 3.12 | 2.31
20 | 0.79 | 2.99 | 2.65
30 | 0.76 | 2.89 | 2.96
40 | 0.73 | 2.76 | 3.35
50 | 0.69 | 2.63 | 3.68
60 | 0.64 | 2.42 | 4.01
70 | 0.61 | 2.31 | 4.24

Temperature rise curve
Temperature rise measured at ambient 25℃, inlet 0 PSI, working pressure 70 PSI. To protect the motor, a thermal protector disengages when housing temperature reaches approximately 73℃; motor restarts when temperature falls below the reconnection threshold. All curves are approximate and vary with installation and ambient conditions.

Shut-off pressure and selection
Selection data (representative, 12V DC, inlet 0 PSI, tested with 3/8" tube): working flow 0.85 GPM; typical working current ≤ 2.5 A; recommended suction ≥ 2 m; connection 3/8" female quick connector (NPT 3/8) / screw thread.
LFP0085T-30070 — Shut-off: 70 PSI — Max current ≤ 4.8 A
LFP0085T-30060 — Shut-off: 60 PSI — Max current ≤ 4.6 A
LFP0085T-30050 — Shut-off: 50 PSI — Max current ≤ 4.3 A
LFP0085T-30040 — Shut-off: 40 PSI — Max current ≤ 4.0 A
LFP0085T-30030 — Shut-off: 30 PSI — Max current ≤ 3.6 A

Dimension
Dimension drawings and product dimension images are available on the product page for installation reference.

Documents
Technical PDF specification document for the LEFOO LFP0085T series is available (product specification PDF).

Technical specifications

• Model: LFP0085T
• Brand: LEFOO
• Product type: 12V DC demand delivery pump
• Rated voltage: 12V DC
• Typical tested flow rate: 0.85 GPM (≈3.22 LPM) at 0 PSI (test condition)
• Tested pressure range: 0–70 PSI (performance table provided)
• Working current: approx. 1.96 A at 0 PSI up to ~4.24 A at 70 PSI (varies with pressure)
• Maximum current (model dependent): up to ≤4.8 A for 70 PSI variant
• Available shut-off pressure variants: 30 / 40 / 50 / 60 / 70 PSI
• Connection: 3/8" side female quick connector (NPT 3/8) / screw thread
• Recommended minimum suction: ≥ 2 m
• Test conditions note: inlet 0 PSI, ambient 25℃, water 25℃, tested with 3/8" pipe
• Thermal protector: housing cutoff ≈ 73℃ to protect motor