Cooling Systems - Water Discharge Fittings

• -8 AN Threads.
• Outer Diameter 1".
• Overall Length 3-1/8".
• Your choice of Color Option. 
• Will accept a -8 AN style fitting or 3/4" push-on hose.
• Includes nut.

See what each of our powder-coated finishes (both flat and glossy) look like under different lighting here!

This has to be one of the coolest and simplest stream lined inventions to come along in recent times. High water pressure spikes plague numerous boats and cause catastrophic engine damage. Until now your only option was an independent pressure relief valve that you then had to plumb to a water dump to discharge the water. Thanks to the Hardin Marine team they have taken the best high flow water valve design and integrated it into a common water dump.

These dumps feature a sleek design as well as unique wrench flats machined into the body aiding in assembly during a one person installation. Constructed from 316L stainless steel. This model provides a 1/2 NPT female thread allowing for any arrangement of possible fitting and hose connections. The unit features a stainless tulip style valve that is spring loaded. The units come preset at approximately 10psi.

• 1-7/16" Flange Diameter
• 1/4" Flange Height 
• 1-1/8" Shaft Outside Diameter
• 3" Overall Length
• 1/2" NPT Internal Thread
• Pre-set at Aprox. 10lb Pressure Relief, not adjustable.
• Approx. Flow Rate (gallons per minute) 10 psi=7 GPM, 15 psi= 13 GPM, 20 psi=19 GPM

This has to be one of the coolest and simplest stream lined inventions to come along in recent times. High water pressure spikes plague numerous boats and cause catastrophic engine damage. Until now your only option was an independent pressure relief valve that you then had to plumb to a water dump to discharge the water. Thanks to the Hardin Marine team they have taken the best high flow water valve design and integrated it into a common water dump.

These dumps feature a sleek design as well as unique wrench flats machined into the body aiding in assembly during a one person installation. Constructed from 316L stainless steel. This model provides a 3/4 NPT female thread allowing for any arrangement of possible fitting and hose connections. The unit features a stainless tulip style valve that is spring loaded. The units come preset at approximately 10psi.

• 1-3/4" Flange Diameter
• 1/4" Flange Height 
• 1-1/4" Shaft Outside Diameter
• 4" Overall Length
• 3/4" NPT Internal Thread
• Pre-set at Aprox. 10lb Pressure Relief
• Approx. Flow Rate (gallons per minute) 10 psi=7 GPM, 15 psi= 13 GPM, 20 psi=19 GPM

• 5/8" Slip-On
• Outer Diameter 1.47"
• Overall Length 2.70"
• Polished Stainless Steel
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 5/8" Slip-On
• Outer Diameter 1.57"
• Overall Length 1.85"
• Polished Stainless Steel
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 3/4" Slip-On
• Outer Diameter 1.75"
• Overall Length 3.57"
• Polished Stainless Steel.
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 3/4" Slip-On
• Outer Diameter 1.75"
• Overall Length 2.10"
• Polished Stainless Steel.
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 1" Slip-On
• Outer Diameter 1.97"
• Overall Length 3.84"
• Polished Stainless Steel.
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 1" Slip-On
• Outer Diameter 2.23"
• Overall Length 2.00"
• Polished Stainless Steel.
• Stainless Steel main body and flange.
• Includes nut and gasket.
• This is similar to 780-350-006CHR just shorter for thinner hulls.

• 1-1/8" Slip-On
• Outer Diameter 2.20"
• Overall Length from flange 3.65"
• Polished Stainless Steel.
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 1-1/8" Slip-On
• Outer Diameter 2.20"
• Overall Length 2.15"
• Polished Stainless Steel.
• Stainless Steel main body and flange.
• Includes nut and gasket.

• 1-1/4" Slip-On
• Outer Diameter 2.23"
• Overall Length 3.8"
• Polished Stainless Steel
• Stainless Steel main body and flange.
• Includes Nut and Soft Washer.
  

• 1-1/4" Slip-On
• Outer Diameter 2.23"
• Overall Length 3"
• Polished Stainless Steel
• Stainless Steel main body and flange.
• Includes Nut and Soft Washer.
  

• 1-1/2" Slip-On
• Outer Diameter 2.68"
• Overall Length 3.8"
• Polished Stainless Steel.
• Stainless Steel main body and flange.

• 1-1/2" Slip-On
• Outer Diameter 3.0"
• Overall Length 2.70"
• Polished Stainless Steel.
• Stainless Steel main body and flange.

• Constructed of Polished 316L Stainless Steel.
• 3/4" NPT Female Thread
• Outer Diameter 1-1/4"
• Overall Length 4"
• Dumps are perfect for intercooler, tailpipe, and even engine water discharge. 

• 1-1/4" Push on hose.
• 45 degree down slope.
• Can act as an outdrive cooling shower, when mounted above the drive.
  • Stainless Steel.

• Constructed of Polished 316L Stainless Steel.
• 3/4" NPT Female Thread
• Outer Diameter 1-1/4"
• Overall Length 3-7/8"
• Overall Width 5-1/4"
• Perfect for intercooler, tailpipe, and even engine water discharge. 

• Constructed of 316L Stainless Steel.
• Polished to a show quality mirror finish.
• Three -12 AN Male fittings.
• Length - 6-1/2"
• Width - 2-1/8"
• Depth - 3-1/2"
• 1-3/4" center to center on the fittings
• Perfect for intercooler, tailpipe, and even engine water discharge.