Mi-T-M 850-0175 Hot Water Dual Lance Assembly – Genuine OEM Replacement 36" Insulated Trigger Gun, Dual Lance & 4500 PSI
Part Number: 850-0175
Category: Pressure Washer Parts & Accessories → Spray Components → Hot-Water Gun & Dual-Lance Assemblies
Type: Mi-T-M 850-0175 Hot Water Dual Lance Assembly – Genuine OEM Replacement 36" Insulated Trigger Gun, Dual Lance & 4500 PSI
The Mi-T-M 850-0175 Hot Water Dual Lance Assembly is a genuine OEM replacement spray assembly designed for compatible Mi-T-M hot-water pressure washers. This professional assembly combines an insulated trigger gun with a 36-inch dual lance and a maximum pressure rating of 4500 PSI. The insulated construction helps improve handling around heated wash water, while the dual-lance configuration supports convenient spray-pressure adjustment on compatible systems. Manufactured to original equipment specifications, it helps restore controlled water delivery and dependable cleaning performance.
Key Features & Benefits
- Part Number: 850-0175
- Genuine OEM Mi-T-M replacement assembly
- Designed for compatible hot-water pressure washers
- Includes an insulated trigger gun and dual lance
- 36-inch lance length
- Maximum pressure rating of 4500 PSI
- Insulated design supports safer, more comfortable handling
- Dual-lance configuration supports spray-pressure adjustment
- Provides controlled high-pressure water delivery
- Helps restore proper gun-and-wand functionality
- Suitable for demanding commercial and industrial cleaning
- Manufactured to original equipment specifications
Technical Specifications
- Part Number: 850-0175
- Manufacturer: Mi-T-M
- Product Type: Hot Water Dual Lance Assembly
- Component Type: Insulated Trigger Gun and Dual Spray Lance
- Lance Length: 36 Inches
- Lance Configuration: Dual Lance
- Maximum Pressure: 4500 PSI
- Gun Type: Insulated Trigger Gun
- Application: Hot-water pressure washing
- Function: High-pressure spray control and compatible pressure adjustment
- OEM Part: Yes
- Quantity: One Complete Assembly
Compatible Applications
The Mi-T-M 850-0175 Hot Water Dual Lance Assembly is designed for select:
- Mi-T-M hot-water pressure washers
- Compatible commercial pressure-washing systems
- Industrial cleaning equipment
- High-pressure hoses and spray accessories
- Adjustable-pressure dual-lance systems
- Equipment requiring OEM assembly 850-0175
Always verify the pressure-washer model, serial number, operating pressure, flow rate, water-temperature rating, hose connection, nozzle requirements, dual-lance configuration, parts diagram, and original part number before ordering.
Function of the Hot Water Dual Lance
The 850-0175 Hot Water Dual Lance Assembly is designed to:
- Control the release of pressurized hot water
- Direct water through the 36-inch dual lance
- Support adjustable spray pressure on compatible systems
- Allow convenient switching between cleaning and lower-pressure applications
- Provide insulation around designated operator-contact areas
- Improve cleaning reach and spray positioning
- Restore proper hot-water spray-gun functionality
- Replace a leaking, worn, damaged, or malfunctioning assembly
A correctly matched hot-water gun and lance assembly is essential for secure pressure control, temperature compatibility, and dependable pressure-washer performance.
Common Signs Replacement Is Needed
Replace the hot-water dual-lance assembly if you notice:
- Water leaking from the gun, lance, or fittings
- Trigger sticks, binds, or fails to shut off
- Cracked, loose, or damaged insulation
- Bent, corroded, or damaged lance tubes
- Dual-lance adjustment no longer operates correctly
- Worn or damaged inlet or outlet connections
- Reduced or inconsistent spray performance
- Water continues flowing after releasing the trigger
- Assembly cannot safely support operating pressure or temperature
- Damage caused by impact, freezing, overheating, or chemicals
Spray problems may also result from incorrect nozzles, a restricted hose, worn pump, damaged unloader, or inadequate water supply. Inspect the complete system before assuming the gun and lance assembly is the only cause.
Installation & Service Notes
- Shut down the pressure washer and burner system.
- Turn off the water supply and disconnect the power or spark-plug wire when applicable.
- Squeeze the existing trigger gun to release trapped system pressure.
- Allow the water, coil, hose, gun, and other heated components to cool completely.
- Disconnect the existing assembly from the high-pressure hose.
- Inspect the hose fitting, couplers, threads, seals, and O-rings.
- Confirm that the replacement assembly matches all required pressure, flow, and temperature ratings.
- Connect the high-pressure hose securely to the trigger-gun inlet.
- Install the correctly sized and rated spray nozzles.
- Confirm that all fittings and adjustable components are properly secured.
- Turn on the water supply and inspect every connection for leakage.
- Point the lance in a safe direction before starting the pressure washer.
- Test the trigger, shutoff, and dual-lance adjustment at low pressure and temperature when possible.
Important: The 4500 PSI specification is the assembly’s maximum pressure rating and must not be exceeded. Every connected component must meet or exceed the pressure washer’s operating pressure, flow rate, and water temperature. Never install, disconnect, or service the assembly while the system is operating, pressurized, or hot.
Safety Recommendations
- Never point the lance at people, animals, electrical equipment, or fragile surfaces.
- Treat the gun, lance, fittings, and discharged water as hot during and after operation.
- Do not touch uninsulated metal components until they have cooled.
- Always engage the trigger safety lock when the gun is unattended.
- Never wire, tie, or otherwise secure the trigger in the open position.
- Wear eye protection, insulated gloves, closed-toe footwear, and appropriate protective clothing.
- Maintain stable footing and hold the spray gun securely.
- Expect significant reaction force when pulling the trigger.
- Never check for leaks using your fingers or skin.
- Seek immediate medical care for pressure-injection injuries or serious burns.
Maintenance Recommendations
- Inspect the trigger gun, insulation, lance tubes, and fittings before each use.
- Check for cracks, corrosion, leaks, loose parts, and heat damage.
- Confirm that the trigger and dual-lance adjustment operate smoothly.
- Keep nozzle openings and connections free of dirt and debris.
- Replace damaged seals and O-rings with approved temperature-rated components.
- Flush the assembly with clean water after chemical application.
- Release trapped pressure and allow the assembly to cool before storage.
- Drain all water before exposure to freezing temperatures.
- Store the assembly in a clean, dry, protected location.
- Do not use the lance as a lever, pry bar, or support.
- Use genuine OEM replacement parts to maintain proper fit, heat resistance, pressure compatibility, and dependable operation.
