I have two brand‑new, unopened GSE International ZW500D2‑30/7Y‑(3)-GD066 twin‑head rocking piston compressors.These are 3/4 HP, oil‑less, continuous‑duty industrial pumps commonly used in CNC vacuum tables, oxygen concentrators, pond aeration systems, hydroponics, and other applications requiring reliable 24/7 performance.

Key Specifications

  • Model: ZW500D2‑30/7Y‑(3)-GD066

  • Rated Voltage: 115V / 60Hz

  • Rated Input Power: ≤650 W

  • Input Current: ≤5.7 A

  • Max Rated Air Flow: 4.4 CFM

  • Rated Pressure: 100 PSI

  • Max Intermittent Pressure: 116 PSI

  • Restart Pressure: ≥100 PSI

  • Noise Level: ≤68 dB(A)

  • Ambient Operating Temperature: 41-104°F

  • Insulation Class: B

  • Insulation Resistance: ≥500 MΩ

  • Thermal Protection: 293±41°F (automatic reset)

  • Capacitor Included: 30μF ±5%

  • Weight: 16.5 lb

  • Mounting Dimensions: 9.37 x 5.12 x 7.91 in (thread 4 × 1/4‑20 UNC)

Enhanced Technical Features (from GSE International)

  • Twin‑Head Rocking Piston Design for smooth, efficient compression

  • Permanently lubricated bearings

  • Oil‑less, non‑lubricated cup and cylinder

  • Long‑life cup design

  • Thin‑wall cylinder for effective heat transfer

  • Stainless‑steel valves

  • Field‑service ready construction

  • Recoverable thermal protection

  • Back‑pressure restart at 100 PSI

  • ETL Listed for safety and compliance

Included in the Box

  • Factory‑sealed compressor

  • Metal intake muffler with yellow filter element

  • Pressure relief valve

  • Elbow adapter

  • Mounting screws

  • Head plugs / blocking bolts (for alternate configurations)

Condition

  • Brand new, never opened

  • Stored indoors in a clean, climate‑controlled environment

  • OEM packaging intact

Applications

  • CNC vacuum hold‑down systems

  • Oxygen concentrator rebuilds

  • Pond & lake aeration

  • Hydroponics & aquaculture

  • Vacuum forming

  • Airbrush and small pneumatic systems

  • General industrial use

This is a high‑quality, industrial‑grade compressor , not a hobby pump. Ships fast and safely packed.Bought two for a project and ended up not using them - my loss, your gain.