Rupture Disk 8333 PSI 225°F 3/8" MPT – OEM Replacement Part

Part Number: RD5500
Category: Pressure Washer Components → Safety Devices → Rupture Disks
Type: Pressure Washer Coil Safety Rupture Disk

The Rupture Disk 8333 PSI 225°F 3/8" MPT is a critical pressure washer safety device designed to protect hot water pressure washer systems from dangerous overpressure and thermal expansion conditions. Commonly installed on hot water pressure washer coil housings, this rupture disk provides a reliable last line of defense when abnormal operating conditions occur.

Key Features & Benefits

• Critical hot water pressure washer safety device
• Designed to protect coil housings from excessive pressure buildup
• Helps safeguard operators and equipment
• Rupture pressure rated at approximately 8333 PSI
• Temperature rating of 225°F
• Commonly used on hot water pressure washer systems
• Provides emergency pressure relief during system malfunctions
• 3/8" MPT connection for easy installation
• OEM-quality construction for dependable performance
• Essential component for pressure washer safety systems

Technical Specifications

Product Type: Rupture Disk

Connection Size: 3/8" MPT

Thread Type: Male Pipe Thread (MPT)

Pressure Rating: 8333 PSI

Temperature Rating: 225°F

Application: Hot Water Pressure Washer Coil Protection

OEM Replacement: Yes

Typical Applications

• Hot water pressure washers
• Pressure washer coil housings
• Commercial cleaning equipment
• Industrial wash systems
• Fleet washing equipment
• Equipment wash bays
• Heated pressure washer systems
• Safety protection circuits

Performance Advantages

• Protects coil housings from dangerous overpressure conditions
• Helps prevent catastrophic equipment failures
• Provides critical operator safety protection
• Designed for high-pressure hot water applications
• Responds to abnormal thermal expansion events
• Supports safe operation of heated pressure washer systems
• OEM-quality design ensures dependable emergency protection
• Essential for maintaining pressure washer safety compliance
• Helps reduce equipment damage during system malfunctions

Important Safety Information

• A ruptured disk often indicates an underlying equipment malfunction.
• Common causes include burner control failures, pressure regulation issues, or thermal expansion within the heating coil.
• Replacing the rupture disk alone may not correct the root cause of the problem.
• Always inspect and troubleshoot the pressure washer system before returning equipment to service.
• Verify proper operation of burners, thermostats, unloaders, pressure switches, and other safety devices after replacement.

Maintenance Recommendations

• Inspect rupture disks regularly during routine equipment maintenance.
• Replace immediately if activated, damaged, or leaking.
• Investigate all system malfunctions that may have caused activation.
• Verify proper burner shutdown and pressure regulation functions.
• Follow manufacturer safety procedures during replacement and inspection.
• Use only properly rated replacement rupture disks for your equipment.