Guardian G1540 AquaGuard 16 Gallon Gravity-Flow Portable Eyewash Unit

✅ 16-Gallon Self-Contained Gravity-Flow Portable Eyewash

✅ Delivers Over 0.5 GPM For 15 Minutes Per ANSI Z358.1-2014

✅ Safety Green Polyethylene Tank With Built-In Carrying Handle

✅ Wall Bracket Included — Or Place On Countertop / Flat Surface

✅ Bacteriostatic Additive (G1540BA) Supplied With Unit

✅ Tested To And Compliant With ANSI Z358.1-2014 And The Uniform Plumbing Code

Guardian G1540 AquaGuard Gravity-Flow Portable Eyewash, 16 Gallon

OSHA 29 CFR 1910.151(c) requires suitable facilities for quick drenching or flushing where employees' eyes or body may be exposed to injurious corrosive materials — but plumbed water isn't always available. Construction sites, remote work areas, mobile equipment yards, oil and gas operations, and any facility where a continuous supply of potable water can't be reliably plumbed still need emergency eyewash equipment that can support ANSI Z358.1 requirements within 10 seconds of applicable hazard areas. The Guardian G1540 AquaGuard solves that with a 16-gallon self-contained gravity-flow tank that delivers over 0.5 GPM for 15 minutes — without electrical power, without compressed air, without a plumbed supply line.

The 16-gallon capacity is sized to deliver approximately 8 gallons (30 liters) of water during the 15-minute flush, with the remaining capacity providing reserve and the headspace needed for proper gravity-flow delivery. That's the practical reason buyers move up from a 9-gallon portable: more capacity helps support the 15-minute flushing period as required by ANSI Z358.1-2014.

Guardian lists the G1540 as tested to and compliant with ANSI Z358.1-2014 and the Uniform Plumbing Code. The unit ships fully assembled and water-tested, with an 8 oz bottle of bacteriostatic additive included. Final installed compliance depends on proper placement, fluid maintenance, weekly visual inspection, and site conditions.

Quick Specs 

• Application: Self-contained gravity-flow portable eyewash for areas without plumbed water
• Tank Capacity: 16 gallons total (delivers approximately 8 gallons during the 15-minute flush)
• Tank Material: Safety green polyethylene with heavy wall construction and reinforced ribs
• Carrying Handle: Built-in molded carrying handle on tank
• Spray Heads: Dual integral full-flow nozzles delivering a soft spray pattern
• Activation: Pull bright yellow eyewash tray downward to start flow; swing tray up to stop
• Discharge Rate: Over 0.5 GPM for 15 minutes
• Drain: Drain opening in tank basin with 3 ft drain hose included to direct discharge
• Mounting: Zinc-plated steel wall bracket included; can also be placed on countertop or flat surface
• Mounting Heights (Per ANSI Z358.1): Water flow pattern positioned between 33" and 53" above floor
• Bacteriostatic Additive: 8 oz bottle (G1540BA) included with unit
• Water Change Interval: At least once every six months per Guardian guidance
• Dimensions: 22" W × 20-1/2" D × 20" H (approximate, closed position)
• Weight: 13 lbs empty / 158 lbs full
• Compliance: Tested to and complies with ANSI Z358.1-2014 and Uniform Plumbing Code
• Quality Assurance: Completely assembled and water-tested prior to shipment

Key Features

Gravity-Flow Operation — No Power, No Plumbing

The G1540 operates entirely on gravity-fed water column pressure. There is no electrical connection, no compressed air, and no plumbed supply line required. Drop the unit on a job site, fill it with clean potable water, add the included bacteriostatic additive, mount it (or place it on a flat surface), and it's ready for service. This makes the G1540 the right fit for construction sites, remote facilities, mobile equipment yards, and any work area where running plumbing isn't practical.

16 Gallons Sized For The 15-Minute Flush

ANSI Z358.1-2014 calls for portable eyewash equipment to deliver a continuous flush for 15 minutes. The G1540 holds 16 gallons of total capacity and is designed to deliver approximately 8 gallons during the 15-minute flush. The extra capacity is reserve and headspace — important for proper gravity-flow delivery throughout the flush period, with operational margin if an emergency runs longer than 15 minutes.

Safety Green Tank With Reinforced Construction

The 16-gallon tank is molded from safety green polyethylene with heavy wall construction and reinforced ribs to support the weight of a full unit. Safety green is widely recognized as a "first aid / safety equipment" color in industrial environments, helping the unit stand out visually in busy work areas. The molded carrying handle makes a 13-lb empty unit straightforward for one person to position; once filled, the 158-lb full weight is best moved on the wall bracket or with a cart.

Bright Yellow Pull-Down Activation Tray

Water flow is activated by pulling down on a bright yellow eyewash tray that supports the dual spray nozzles. Pull down for flow, swing up to stop. The bright yellow color contrasts with the green tank for high-visibility activation under stress — a worker with chemical exposure shouldn't have to search for the activation point.

Built-In Drain With 3 Ft Drain Hose

The tank basin has an integral drain opening with a 3 ft drain hose included to direct discharge water into a floor drain, storage tank, or other waste receptor. This matters in indoor installations where standing water during a 15-minute flush would be a slip hazard or flooding concern.

Zinc-Plated Steel Wall Bracket Included

A zinc-plated steel wall bracket is included with the unit. The bracket holds the tank securely against a wall stud or structural mounting point, and per Guardian's installation guidance, the unit should be installed so that the water flow pattern is positioned between 33" and 53" above the floor (the ANSI Z358.1 mounting height range). The unit can also be placed on a countertop or other flat surface if wall mounting is not available.

Bacteriostatic Additive Included

An 8 oz bottle of bacteriostatic additive (G1540BA) is supplied with each unit. The additive protects the stored water against growth of bacteria, fungus, algae, and acanthamoeba between scheduled water changes. Guardian recommends inspecting the unit regularly and changing the water at least once every six months. Refill cases (G1540BA-R, case of 4) are available separately for ongoing maintenance.

Available Accessories

• G1540BA-R: Case of 4 bottles (8 oz each) of bacteriostatic additive — for ongoing water-change maintenance after the initial bottle supplied with the unit is depleted.
• G1540CVR: Clear vinyl cover to help protect the unit from dust and debris between activations.
• G1540TC: Thermal cover for installations exposed to extreme heat or direct sunlight — helps protect the tank from temperature stress.

Sizing / How Many Do You Need?

ANSI Z358.1 generally calls for emergency eyewash equipment to be reachable within 10 seconds of applicable hazard areas, on the same level, and along an unobstructed path. One portable eyewash is commonly planned per hazard zone where plumbed equipment isn't available, but final quantity and placement should be reviewed against ANSI Z358.1 and your site's safety plan. For larger or higher-hazard work areas, multiple units may be required to meet the 10-second accessibility rule. Where plumbed water is available within reach of the hazard zone, a permanently plumbed wall-mount eyewash like the Guardian G1814 is typically more cost-effective long-term and eliminates the recurring water-change maintenance.

Why Buy From EyewashDirect?

EyewashDirect carries the full Guardian portable eyewash lineup — including the G1540, the G1540BA-R additive refill cases, the G1540CVR clear cover, and the G1540TC thermal cover — along with the wall-mount and combination station product families if your application calls for plumbed equipment instead. Our team can help you compare portable vs plumbed, gallon capacity options, and fluid-maintenance requirements so you spec the right unit for your work area. Free standard ground shipping on qualifying orders over $99 to the lower 48 U.S. states (excludes air freight, lift-gate, and special delivery), fast same-day shipping on most configurations, and on-staff ANSI Z358.1 compliance support.

Frequently Asked Questions

Does The Guardian G1540 Meet ANSI Z358.1?

Yes. Guardian lists the G1540 as tested to and compliant with ANSI Z358.1-2014 and the Uniform Plumbing Code. Final installed compliance depends on proper installation, location, fluid maintenance, weekly visual inspection, and site conditions.

If The Tank Holds 16 Gallons, Why Does Guardian Say It Delivers Approximately 8 Gallons?

Gravity-flow portable eyewashes need headspace and reserve capacity to deliver a consistent flow rate throughout the 15-minute flush. The G1540's 16-gallon tank is sized so that it can deliver approximately 8 gallons (30 liters) over the 15-minute flush at over 0.5 GPM. The remaining capacity provides reserve and the air column needed for proper gravity-flow delivery. This is the practical reason buyers move up from smaller 9-gallon portables: more headroom for the actual delivered flow.

How Often Does The Water Need To Be Changed?

Guardian recommends inspecting the unit regularly and changing the water at least once every six months. Each unit ships with one 8 oz bottle of G1540BA bacteriostatic additive. Refill cases (G1540BA-R, case of 4 bottles) are available for ongoing maintenance. The bacteriostatic additive helps protect the stored water against growth of bacteria, fungus, algae, and acanthamoeba between water changes.

Does The G1540 Need Power Or Plumbed Water?

No. The G1540 is a self-contained gravity-flow unit. There is no electrical connection, no compressed air, and no plumbed water supply required. Fill the tank with clean potable water, add the bacteriostatic additive, and the unit is ready for service.

What Mounting Height Should Be Used?

Per Guardian's installation guidance and ANSI Z358.1, the unit should be installed so that the water flow pattern is positioned between 33" and 53" above the floor. The included zinc-plated steel wall bracket positions the unit at the appropriate height when mounted to a structural surface.

Can The G1540 Be Used Outdoors?

The G1540 can be used in a range of installations, but Guardian offers the G1540TC thermal cover for installations exposed to extreme heat or direct sunlight. The G1540CVR clear vinyl cover is also available to protect against dust and debris. For outdoor cold-weather installations, see the G1562HTR-DOL heat-traced portable variant or consult our team about freeze-resistant alternatives.

What's The Difference Between The G1540 And A Smaller Portable Like The Haws 7501?

Tank capacity. The G1540 holds 16 gallons total. The Haws 7501 holds 9 gallons. Both are commonly used for ANSI Z358.1 portable eyewash applications, but the G1540's larger 16-gallon capacity provides more reserve for sustained flow and longer intervals between water changes vs the 9-gallon Haws 7501. The G1540 is also the standard portable that buyers spec for higher-traffic or higher-risk installations. Always compare the current manufacturer specs before ordering.

What Does The G1540 Weigh?

The unit weighs 13 lbs empty and approximately 158 lbs when filled with 16 gallons of water. The empty unit is straightforward for one person to position; once filled, the unit should be wall-mounted or moved on a cart.

Is The Unit Tested Before Shipment?

Yes. Guardian states that the G1540 is completely assembled and water-tested prior to shipment.

What Does The G1540 Ship With?

The unit ships with the 16-gallon tank, the dual-spray-head assembly with bright yellow activation tray, a zinc-plated steel wall mounting bracket, a 3 ft drain hose, and one 8 oz bottle of G1540BA bacteriostatic additive. The G1540CVR clear cover and G1540TC thermal cover are sold separately as accessories.

Related Products

• Guardian G1540BA-R Bacteriostatic Additive — 4-Pack Refill
• Guardian G1562 Portable Eyewash — 15 Gallon Stainless
• Haws 7501 Portable Eyewash — 9 Gallon
• Guardian G1814 Wall-Mount Eyewash — Plumbed Alternative
• Portable Eyewash Stations
• Guardian Eyewash And Safety Shower Equipment