Check Valve Support Ring 303274
Product Name: Check Valve Support Ring (Part No. 303274)
Description:
This component is a support ring, specifically engineered for the check valve assembly in high-pressure waterjet cutting systems . It is a precision-machined rigid ring manufactured from high-strength, wear-resistant material, designed to provide critical structural support to the sealing elements within the check valve.
The support ring functions as an internal reinforcement component within the check valve stack-up . Unlike a backup ring, which directly prevents O-ring extrusion, the support ring helps maintain proper alignment and spacing between components, ensuring the check valve seals correctly under extreme operating conditions. It is a listed component in official OMAX service guides for pump maintenance and major overhaul procedures .
This "new style" support ring is manufactured for the AccuStream product line (Hypertherm Associates) and is compatible with OMAX waterjet intensifier pump check valve assemblies . It is rated for continuous operation at 60,000 PSI and above.
Applications:
Installed within the check valve assembly of OMAX/AccuStream waterjet intensifier pumps
Provides structural support and proper spacing for internal check valve sealing components
Used during Minor Maintenance, Major Maintenance, and Overhaul procedures of the pump wet-end assembly
Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI (approximately 4,137 bar) and above
Features:
Precision-Machined Construction: Manufactured to exacting tolerances for proper fit within the check valve assembly
Rigid Support Function: Maintains proper spacing and alignment of internal check valve components to ensure reliable sealing
OEM Quality: Produced for AccuStream (brand of Hypertherm Associates) to original equipment specifications
New Style Design: Updated "new style" configuration for improved compatibility with current check valve assemblies
OEM Compatibility: Direct replacement part for OMAX #303274 and AccuStream #1-13178
Inspection Component: Listed as an "inspect" component during Minor Maintenance and "replace" during Major Maintenance and Overhaul
Maintenance:
Failure Diagnosis:
Visible Wear: During disassembly, inspect the support ring for signs of deformation, cracking, scoring, or wear
Check Valve Performance Issues: Pressure drop or inability to maintain cutting pressure may indicate support ring failure within the check valve stack
Component Inspection Schedule: Unlike some consumable seals, this support ring is inspected during Minor Maintenance and replaced during Major Maintenance (every 4,500–5,000 hours) or Overhaul procedures
Associated Component Wear: If the check valve ball (200904) or seat (300640) shows wear, inspect the support ring for damage as well
Inspection and Replacement Procedures:
Minor Maintenance: During Minor Maintenance, the support ring is listed as an "inspect" component. Remove, clean, and examine for wear or damage
Major Maintenance / Overhaul: During Major Maintenance (recommended every 4,500–5,000 hours) and Overhaul procedures, the support ring is listed as a "replace" component
Clean Thoroughly: Before inspection or reinstallation, clean the support ring and the mating groove with a soft cloth and low-pressure water. Remove all debris, old seal residue, and mineral deposits
Inspect for Damage: Use a magnifying glass to inspect the ring for hairline cracks, deformation, or surface wear. Replace immediately if any damage is visible
Lubrication: Apply a thin coating of high-pressure grease during reinstallation to ensure proper seating
Full Depressurization: Always fully depressurize the waterjet system and follow lockout/tagout procedures before disassembling the check valve assembly
Proper Assembly: Ensure the support ring is correctly seated in the proper orientation within the check valve stack before tightening retainers
Cross-Reference Part Numbers: This component is equivalent to OMAX #303274, AccuStream #1-13178, and WO303274
