New Design Features:
• Interior Design – more efficient flow and operation
• Dual Locking Nuts – vibration resistant for setting maximum pressures
• New Spring Material – more resistant to fatigue, powder paint resists rusting
• Piston – large diameter, more strength and contact area for shifting alignment
• Discharge Nipple – sealing o-ring has been moved to the lower part of the thread, increases hydro strength and fitting strength
• Shutter Valve – hex design, less contact area for smooth shifting (prevents binding). larger size, longer life and more positive shifting

Featuring:
• Forged valve body – excellent strength
• Two inlet ports
• Two by-pass ports
• Ultra thick inlet and discharge ports - added strength
• Color coded spring – easy valve identification
• All ports are FNPT

Specifications:
• Spring Color: Blue
• Does not included black adjustment knob
• Replaces AL606XA
• Maximum Pressure: 3,650 PSI
• Max. Volume: 8.0 GPM
• Adjustable pressure
• Brass valve body
• Max. Fluid Temp.: 194° F.
• Inlet Ports (2): 3/8" FNPT
• Discharge Ports (1): 3/8” FNPT
• Bypass Ports (2): 3/8” FNPT
• Weight: 27.9 oz

Mecline VRT3-310 Unloader Plumbing Kit for Pressure Washer Pump – 4,495 PSI Max. This unloader kit has all the components to make installation easy

Specifications:
• Works with pumps that have 1/2” FPT inlet and 3/8” FPT Outlet
• Maximum Pressure: 4,495 PSI
• Max. Volume: 8.0 GPM

COMPONENT:
• Mecline VRT3-310 Adjustable Unloader Valve 4,495 PSI
• 24” of push-on bypass hose
• 1/4” Male push on fitting
• 3/8” Male push-on fitting
• 3/8M x 3/8M Hex Nipple Steel
• GP Thermal relief valve protects pump from overheating
• GP Duraview water inlet filter with garden hose connection
• 3/8” QC socket
• 3/8” QC plug
• Roll of Teflon tape
• Note: Pump in 2nd picture is not included and kit may look different than shown in picture
• Weight: 5 lb

Comet Premium Pump Oil (32 oz)

• For diaphragm and high pressure plunger pumps
• Specially formulated non-detergent and non-foaming oil
• Rated for superior rust and oxidation protection
• Packaged in 32 oz bottles
• Bottle Color: Black or White
• Weight: 2.0 Lbs.

Features:
• Designed to introduce detergents into the water system upstream from the pump at high pressure
• The "on-off" plunger is then used to control the injection
• Easily connects to inlet of pump at garden hose connection
• Adjustable chemical flow
• Chemical strainer and 4’ PVC tubing included
• Choose size based on flow rate of your pressure washer

See the ST-64 in action on YouTube

Specifications:
• Size: 1.5 to 4.0 GPM flow rate
• Max Temperature: 140° F
• Inlet: 3/4" FGH (female garden hose)
• Outlet: 3/4" MGH (male garden hose)
• Optional ST-61 chemical metering valve adjusts from off to full flow
• Weight: 0.78 lb