Steel Adapter 3/8" FPT x 3/8" MPT 4000 PSI – OEM Replacement Fitting
Part Number: 4088
Category: Pressure Washer Parts → Fittings & Adapters → Steel Adapters
Type: Steel Male x Female Pipe Thread Adapter
The Steel Adapter 3/8" FPT x 3/8" MPT (Part #4088) is a heavy-duty OEM replacement fitting designed to connect male and female threaded components in pressure washer systems, pumps, hydraulic equipment, compressed air systems, and industrial fluid transfer applications. Featuring a 3/8-inch Female Pipe Thread (FPT) connection on one end and a 3/8-inch Male Pipe Thread (MPT) connection on the other, this adapter provides a secure, leak-resistant connection while simplifying system assembly and maintenance.
Key Features & Benefits
- Genuine OEM replacement fitting
- 3/8" FPT x 3/8" MPT connection
- Heavy-duty steel construction
- Rated up to 4000 PSI
- Leak-resistant threaded connections
- Connects male and female threaded components
- Compact and space-saving design
- Suitable for high-pressure applications
- Corrosion-resistant steel construction
- Durable commercial-grade performance
- Long service life and reliability
Technical Specifications
Part Number: 4088
Product Type: Adapter Fitting
Connection Size I: 3/8" FPT
Connection Size II: 3/8" MPT
Thread Type: Female Pipe Thread (FPT) x Male Pipe Thread (MPT)
Material: Steel
Maximum Pressure: 4000 PSI
OEM Replacement: Yes
Application: Threaded Component Connection
Common Applications
- Pressure washer systems
- Pump assemblies
- Hydraulic equipment
- Compressed air systems
- Water transfer systems
- Chemical application equipment
- Industrial fluid transfer equipment
- Pressure gauge installations
- Agricultural equipment
- Wash-down systems
- Commercial cleaning equipment
Performance Benefits
- Provides secure threaded connections
- Supports high-pressure operation up to 4000 PSI
- Simplifies equipment installation and maintenance
- Durable steel construction for demanding environments
- Leak-resistant performance
- Compatible with a wide range of threaded components
- Helps maintain system integrity
- Long-lasting service life
Signs Replacement May Be Needed
Replace the fitting if you notice:
- Fluid or air leaks
- Damaged or stripped threads
- Visible corrosion or rust
- Cracks or deformation
- Loose connections
- Difficulty achieving a proper seal
- Excessive wear from repeated installation
Installation Notes
- Shut off system pressure before servicing.
- Inspect mating threads for damage or wear.
- Apply appropriate thread sealant or PTFE thread tape.
- Thread the adapter into the receiving component by hand.
- Tighten securely using the proper tools.
- Avoid overtightening to prevent thread damage.
- Pressurize the system and inspect for leaks.
Important: Verify compatibility with your system's thread sizes and operating pressure requirements before installation. Always ensure the fitting's pressure rating meets or exceeds system operating pressure.
Maintenance Recommendations
- Inspect fittings regularly for leaks.
- Check threaded connections during routine maintenance.
- Replace damaged or worn fittings promptly.
- Keep threads clean and free from debris.
- Verify proper sealing after servicing.
- Monitor fitting condition during operation.
