Adams 90° Pressure Washer Swivel – 1/2" FPT x 1/2" FPT

Part Number: 1778
Category: Pressure Washer Parts → Swivels & Fittings
Type: Adams 90° Pressure Washer Swivel – 1/2" FPT x 1/2" FPT, 4000 PSI

The Adams 90° Pressure Washer Swivel (Part #1778) is a genuine J.E. Adams high-pressure swivel engineered for professional pressure washing, industrial cleaning, spray guns, hose reels, and high-pressure fluid transfer systems. Featuring a 90-degree body configuration, this swivel provides smooth 360-degree rotation while helping prevent hose twisting, reduce operator fatigue, and minimize stress on hoses and plumbing connections.

Key Features & Benefits

• Genuine J.E. Adams pressure washer swivel
• Part Number: 1778
• 90° swivel configuration
• 1/2" Female NPT inlet
• 1/2" Female NPT outlet
• Smooth 360° swivel rotation
• Rated for systems up to 4,000 PSI
• Supports flow rates up to 10 GPM
• Maximum operating temperature: 300°F
• Helps prevent hose twisting and kinking
• Reduces stress on hoses and plumbing components
• Heavy-duty commercial construction
• Suitable for hot and cold water pressure washer systems

Technical Specifications

Part Number: 1778

Manufacturer: J.E. Adams

Product Type: 90° Pressure Washer Swivel

Inlet Connection: 1/2" Female NPT

Outlet Connection: 1/2" Female NPT

Maximum Working Pressure: 4,000 PSI

Maximum Flow Rate: 10 GPM

Maximum Temperature: 300°F

Swivel Configuration: 90°

Swivel Rotation: 360°

OEM Replacement: Yes

Compatible Applications

Suitable for use with:

• Commercial pressure washers
• Industrial pressure washing systems
• Hot and cold water pressure washers
• Pressure washer hose reels
• Pressure washer spray guns
• High-pressure hose assemblies
• Surface cleaners
• Industrial wash bays
• Fleet washing equipment
• Agricultural cleaning equipment
• Industrial fluid transfer systems

Always verify thread size, pressure rating, flow requirements, temperature rating, and equipment compatibility before ordering.

Function of the Swivel

The Adams 1778 90° Swivel helps:

• Provide smooth 360° rotation under pressure
• Prevent hose twisting and kinking
• Improve hose routing with its 90° configuration
• Reduce stress on hoses and plumbing components
• Maintain uninterrupted high-pressure water flow
• Extend the service life of hoses, spray guns, and fittings

Its compact 90-degree design improves maneuverability while providing reliable swivel performance during demanding pressure washing applications.

Common Signs Replacement Is Needed

Replace the swivel if you notice:

• Water leaking around the swivel body
• Restricted or rough swivel rotation
• Excessive hose twisting
• Damaged or worn threaded connections
• Corrosion or physical damage
• Reduced swivel performance under pressure

Replacing a worn swivel restores smooth hose movement and dependable system performance.

Installation & Service Notes

Turn off the pressure washer and relieve all system pressure before installation.

Apply an appropriate thread sealant where required and install the swivel using the 1/2" Female NPT inlet and 1/2" Female NPT outlet connections.

Tighten all fittings securely without overtightening.

Verify the swivel rotates freely and inspect all connections for leaks before placing the equipment into service.

Important: Never exceed the maximum 4,000 PSI working pressure, 10 GPM flow rate, or 300°F operating temperature. Always verify compatibility with your pressure washer system and accessories before installation.

Maintenance Recommendations

• Inspect the swivel regularly for smooth rotation and leaks.
• Check threaded connections during routine maintenance.
• Keep the swivel clean and free of dirt, debris, and mineral buildup.
• Replace worn seals or damaged components promptly.
• Inspect hoses for twisting or abnormal wear during operation.
• Use only genuine J.E. Adams replacement parts to maintain proper performance, reliability, and long-term service life.