Monsam NS-004S NSF Certified Compact Four Basin Portable Sink 39" H

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$3,833.00 USD USD
Ships in 5-7 business days  |  Shipping calculated at checkout


The Monsam NS-004S Four Basin Compact Portable Sink features three 6” deep basins PLUS a separate 5” deep basin. The triple sink area is great for dishes and utensils. The fourth sink is a separate hand washing sink. It allows for ample room to wash, despite its compact size.


This sink comes on heavy duty, swivel casters that provide mobility OR stability as you need it. This model is NSF certified for hand washing and comes in 6 color choices for easy design planning.


Add water filtration to extend the warranty to 18 months (instead of one year).

Add an electric foot pump for hands free operation.

Please check current shipping estimates HERE before ordering.



BASIN MATERIAL:   Stainless steel
TRIPLE BASIN DIMENSIONS:   11.5” (W) x 6” (D) x 6” (H)
HANDWASHING BASIN:   11.75 (W) x 9.4" (D) x 4" (H)
CABINET DIMENSIONS:   37” (W) x 18.5” (D) x 39.5” (H)
CABINET MATERIAL:   Sturdy Aluminum Frame - Commercial Grade Plastic Panels
WEIGHT:   145 lbs
WATER HEATER:   2.5 gal adjustable 95°F to 140°F
WARRANTY:   1 year


  • NSF certified
  • Includes 4 swivel casters with safety locking brakes
  • Built with a sturdy aluminum bar frame and heavy duty solid plastic panels
  • Available in 6 colors: Black, White, Grey, Red, Blue or Maple


Q: How do the sinks work?

A: The sink basin itself is set in a cabinet that contains a fresh water tank and a waste water tank.  Most products are electric powered and contain a pump and a hot water heater inside the cabinet.  Move the sink to the desired location, fill the fresh water tank and plug it in to a standard outlet.  If there is no access to electricity, sinks can be configured with either a battery pack, a propane gas power source or a foot pump (cold water only). Please contact us about ordering a sink without electricity if you do not see what you'd like listed on our site. 

Q: How easy is it to move the sink?

A: All cabinets are set on casters that allow the sinks to be easily moved.  The casters will lock in place to prevent inadvertent moving.

Q: How deep are the sink basins?

A: The standard depth is 6”, however, many models have a 10” basin.  In some cases, we can special order a 10" basin.  Please contact us if you have this requirement.

Q: How do you know when you have to dump the waste tank?

A: The waste water tank generally holds one gallon more than the fresh water tank.  When you need to refill the fresh water tank, it's time to empty the waste water tank.

Q: How many hand washings can you get from a filled fresh water container?

A: You can get approximately 40-50 fifteen second hand washings per tank of fresh water.

Q: What is the hot water temperature?

A:  The temperature of warm and hot water sinks varies somewhat by manufacturer, but generally ranges between 110 and 140 degrees.  Temperature can be adjusted in some models.  Mixing hot and cold water through the faucet, as in any sink, allows for modification as well. A few units only heat water a certain level above room tempurature so be sure to read the specs on your warm/hot water sink to be sure. 

Q:  Are portable sinks difficult to install and use? 

A: No, they are extremely easy to install and use.  The sinks are self-contained and are on casters for easy mobility.  The pump and hot water heater are located inside the cabinet, along with fresh and waste water tanks.  Just roll the sink to the desired location, fill the fresh water tank and plug in to any 110 Volt, 20 AMP US standard electrical outlet and switch the pump/heater on.   Note that some sinks are cold water only and operate by either a hand pump or a foot pump.  Some models can be operated by battery or propane power. 

Q: How do I empty and refill the water tanks?

 A: Simply open the cabinet doors and remove the tanks.  Fill the fresh water tank from a tap or hose.  Empty the waste water tank in an appropriate drain.  Fill and roll kits are available to make transporting the tanks easier. 

Q: How do I clean the sink?

A: Clean the sink with non-abrasive cleaners and a soft cloth.  Use a Steramine quaternary sanitizer to clean the drain and hot water system. 

Q: Are there regulatory restrictions in using portable sinks?

A: Some municipalities and localities have guidelines or restrictions on the use of a portable sink in lieu of a plumbed sink.  Please check with your local authorities if there is any question as to the permissibility before purchasing as it is difficult and expensive to return a sink.   

SKU: NS-004S-Black