PA Stainless Steel Check Valve 1/4" 6500 PSI 6.5 GPM – OEM Replacement Part

Part Number: 5593
Category: Pressure Washer Components → Check Valves → PA Pressure Washer Parts
Type: PA Stainless Steel Check Valve 1/4"

The PA Stainless Steel Check Valve 1/4" is a high-pressure OEM replacement check valve designed to provide reliable one-way flow control in pressure washer systems, chemical injection systems, and industrial fluid handling applications. Constructed from corrosion-resistant stainless steel, this check valve helps prevent reverse flow while protecting pumps, unloaders, injectors, and other critical system components from backpressure and contamination.

Key Features & Benefits

• OEM-quality replacement check valve
• Heavy-duty stainless steel construction
• Prevents reverse flow and system backpressure
• Supports flow rates up to 6.5 GPM
• Rated for pressures up to 6500 PSI
• Corrosion-resistant for demanding environments
• Helps regulate chemical flow in injector systems
• Functions as an inline check valve or backflow preventer
• Protects pumps, unloaders, and plumbing components
• Suitable for commercial and industrial applications

Technical Specifications

Manufacturer: PA

Product Type: Check Valve

Material: Stainless Steel

Connection Size: 1/4"

Maximum Flow Rate: 6.5 GPM

Maximum Pressure: 6500 PSI

Application: One-Way Flow Control & Backflow Prevention

OEM Replacement: Yes

Typical Applications

• Pressure washer systems
• Chemical injection systems
• Chemical line foot valves
• Pressure-actuated unloader systems
• Inline backflow prevention
• Industrial cleaning equipment
• Fluid transfer systems
• High-pressure plumbing assemblies

Performance Advantages

• Prevents reverse flow and backpressure damage
• Protects pumps and downstream equipment
• Helps maintain consistent chemical injection performance
• Stainless steel construction resists corrosion and wear
• Supports high-pressure applications up to 6500 PSI
• Improves overall system efficiency and reliability
• Provides dependable one-way fluid flow control
• Suitable for harsh commercial and industrial environments
• Helps extend the service life of connected components

Maintenance Recommendations

• Inspect the valve regularly for leakage or restricted flow.
• Verify proper flow direction during installation.
• Flush contaminants from the system to minimize internal wear.
• Inspect sealing surfaces and internal components during routine maintenance.
• Replace worn or damaged valves immediately.
• Ensure all connected fittings and plumbing components are properly pressure rated.