SD47064 | Thermal Relief Valve 1/2 in Pressure Washer Pump

SD47064 – Thermal Relief Valve – ½″ Connection

The Annovi Reverberi SD47064 Thermal Relief Valve is a critical safety component designed to prevent heat-related damage in pressure washer pumps during extended bypass operation. When water recirculates without spraying, temperature rises quickly—this valve opens automatically to release overheated water and replace it with cooler supply, protecting seals, valves, and pump manifolds.

Overview

Built from durable, corrosion-resistant materials and equipped with a universal ½″ connection, the SD47064 integrates easily into commercial, industrial, and professional cleaning systems. It delivers automatic protection that extends pump life and enhances operator safety.

Engineering & Construction

• Housing Material: High-strength brass or stainless steel for superior corrosion and heat resistance.
• Valve Mechanism: Precision spring-loaded internal assembly triggered by high water temperatures.
• Connection Size: Standard ½″ fitting compatible with many pump manifolds.
• Compact Design: Lightweight, space-efficient body for easy installation.
• Maintenance-Friendly: Simple construction for quick replacement during service intervals.

Functional Advantages

• Automatic Thermal Protection: Opens when temperatures exceed safe levels, expelling hot water.
• Pump Protection: Prevents heat damage to seals, valves, and pump components.
• Operator Safety: Reduces failure risk due to overheating.
• Reliability Under Pressure: Performs consistently during continuous high-pressure operation.
• Universal Fit: Works with a wide range of commercial and industrial systems.

Installation & Service Notes

• Placement: Typically mounted on or near the pump head for fastest temperature response.
• Operation: Activates automatically around 140–145°F (60–63°C), releasing overheated water until cooler supply flows in.
• Maintenance: Inspect periodically for debris, mineral buildup, or seal wear.
• Shipping: Usually ships within 24 hours via UPS Ground; peak times may add 2–3 days.

Applications

• Commercial Pressure Washing: Protecting contractor-grade equipment during idle cycles.
• Industrial Cleaning Systems: Ideal where pumps frequently idle and risk thermal buildup.
• Agricultural & Food Service: Maintains safe temperatures during frequent stop-and-go usage.
• Facility Maintenance & Municipal Services: Enhances reliability for large-volume washers.
• DIY & Service Center Installations: Common upgrade for pump rebuilds and new system setups.

Key Specifications

• Model: SD47064
• Valve Type: Thermal relief valve
• Connection Size: ½″ standard fitting
• Function: Automatically releases overheated water and admits cooler supply
• Activation Temperature: ~140–145°F (60–63°C)
• Applications: Commercial, industrial, and residential high-pressure systems

Bottom Line

The Annovi Reverberi SD47064 Thermal Relief Valve is a compact but essential safeguard that prevents overheating in bypass mode, protects pump components, and ensures reliable long-term operation. With its durable construction and universal ½″ fit, it is a must-have component for any professional-grade pressure washing system.