Adjustable vacuum ejector Model 840030 E-Vac

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Overview
EXAIR’s Adjustable E-Vac® is a low-cost, compressed-air vacuum generator series with easily adjustable vacuum and flow rates to suit application requirements. Compact and maintenance-free with no moving parts, it is suitable for pick-and-place, box opening, clamping, lifting, chucking and surface-mounting operations. Vacuum and flow are adjusted by rotating the venturi/exhaust and locking the position with a lock ring. A range of suction cups and accessories allow building complete vacuum systems.

Applications

• Pick and place of parts and equipment
• Bag and package opening
• Label placement
• Vacuum forming and mold evacuation
• Vacuum filling and leak testing
• Container evacuation and vacuum packaging
• Clamping, chucking and surface mounting
• Paper alignment and feed in printing equipment
• Carton forming and robotic tooling
• Vacuum liquids for testing

Advantages

• Simple vacuum level adjustment at point of use
• Minimised compressed air consumption
• Compact, portable and easy to mount
• No-clog design passes dust and contaminants through
• Single-stage design for stable vacuum
• Quiet operation (optional mufflers available)
• Instantaneous vacuum and fast response
• No moving parts — maintenance free
• Durable 6061 aluminium construction
• Safe operation — no electricity required
• Multiple models to match different flow requirements

Models / Kits (summary table)
Header: SCFM (SLPM) — Adjustable E-Vac Only — Adjustable E-Vac With Straight Through Muffler — Kit Without Straight Through Muffler — Kit With Straight Through Muffler — Deluxe Kit Without Straight Through Muffler — Deluxe Kit With Straight Through Muffler
8.2 SCFM (232 SLPM) — 840008 — 840008M — 841008 — 841008M — 842008 — 842008M
15.4 SCFM (436 SLPM) — 840015 — 840015M — 841015 — 841015M — 842015 — 842015M
26.4 SCFM (747 SLPM) — 840030 — 840030M — 841030 — 841030M — 842030 — 842030M
62.7 SCFM (1,775 SLPM) — 840060 — 840060M — 841060 — 841060M — 842060 — 842060M

Performance (key points)

• Factory setting: 15" Hg (51 kPa). Maximum on non-porous surfaces: ~25" Hg (85 kPa).
• Flow and vacuum vary with load porosity; adjusting the exhaust/venturi changes both vacuum and air consumption.
• Performance examples at 15" Hg, 80 PSIG: 840008 = 8.2 SCFM (232 SLPM), 840015 = 15.4 SCFM (436 SLPM), 840030 = 26.4 SCFM (747 SLPM), 840060 = 62.7 SCFM (1,775 SLPM).
• Evacuation times depend on container volume; see detailed performance tables on the spec sheet.

Accessories (summary)
Required components to build a system: mufflers, tubing, check valves, push-in connectors, fittings, vacuum cups, mounting clip, filter & regulator (in Deluxe Kits). Key items:

• Standard mufflers: 900800 (1/4 MNPT), 900801 (3/8 MNPT), 900802 (1/2 MNPT)
• Straight-through mufflers: 890001 (1/4 MNPS), 890002 (3/8 MNPS), 890003 (1/2 MNPS), 890004 (3/4 MNPS), 890005 (1 MNPS)
• Check valves: 900804 (1/4 FNPT), 900805 (3/8 FNPT), 900806 (1/2 FNPT)
• Vacuum gauge: 900811 (0-30" Hg)
• Push-in connectors and swivel fittings (examples: 900773–900796 series)
• Vacuum tubing available in multiple lengths (900795-10 … 900795-50 and 900796 series)
• Mounting clip: 900798

How it works (summary)
Compressed air enters the inlet and is accelerated through a single directed nozzle into the venturi. A tangential vacuum inlet located between the orifice and venturi draws air from the suction point; the induced air mixes with the primary airstream and exhausts. To adjust vacuum/flow: loosen the lock ring, rotate the exhaust (counterclockwise to increase, clockwise to decrease), then tighten the lock ring.

Specifications / Technical data

• Model family: Adjustable E-Vac®
• Manufacturer / Brand: EXAIR
• Construction: 6061 aluminium
• Operation: compressed-air powered vacuum generator (no electricity)
• Adjustability: vacuum and flow adjustable via venturi/exhaust; lock ring secures setting
• Vacuum range: factory 15" Hg (51 kPa); maximum approximately 25" Hg (85 kPa) on non-porous surfaces
• Available flow sizes (nominal): 8.2, 15.4, 26.4, 62.7 SCFM (232, 436, 747, 1775 SLPM)
• Model and kit options: E-Vac only; E-Vac with straight-through muffler; Kits and Deluxe Kits (include filter & regulator)
• No moving parts — maintenance free
• Recommended supply: clean, dry compressed air; use drain filters and oil-removal filters for best performance
• Optional accessories: mufflers, check valves, vacuum gauge, push-in connectors, swivel fittings, tubing, vacuum cups, mounting clip