Check Vavle Body 303251
Product Name: Check Valve Body (Part No. 303251)
Description:
This component is a stainless steel check valve body, specifically designed for the internal check valve assembly of high-pressure waterjet intensifier pumps . It is a precision-machined housing that serves as the structural base for the check valve assembly, which controls the one-way flow of water entering the high-pressure cylinder from the low-pressure supply and directs pressurized water toward the high-pressure outlet line .
This check valve body features a weep slot design incorporated in recent updates for better performance monitoring . For a complete check valve assembly, this body is used in conjunction with the repair kit (P/N 303401) which includes the poppet, seat, spring, and sealing elements . It is rated for continuous operation at 60,000 PSI (approximately 4,137 bar).
Applications:
Serves as the main housing for the internal check valve assembly in waterjet intensifier pumps
Provides the cavity that contains the valve poppet, seat, spring, and sealing components
Mounts between the low-pressure water supply and the high-pressure cylinder
Two check valve bodies are required per complete intensifier pump assembly (inlet and outlet sides)
Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI and above
Features:
Stainless Steel Construction: Provides excellent corrosion resistance and structural integrity under extreme pressure cycling
Weep Slot Design: Recent update includes a weep slot for better performance monitoring and leak detection
Critical Flow Passage: Contains internal passages that direct water from low-pressure supply into the high-pressure cylinder during the intake stroke
Standardized Dimensions: Precision-machined to OEM specifications for proper fit with check valve repair kit components
OEM Compatibility: Direct replacement for OMAX #303251, also cross-referenced as WO303251 and AccuStream 1-12005
Maintenance:
Failure Diagnosis:
External Water Leakage: Water weeping from the weep slot or body joints indicates internal seal failure within the check valve assembly
Pressure Drop: Inability to maintain rated cutting pressure suggests worn internal components (poppet, seat) requiring replacement
Localized Overheating: If the check valve body becomes noticeably hot during operation, it indicates internal leakage and requires service
Cracked Body: Visible cracks or deformation of the stainless steel body require immediate replacement
Inspection and Replacement Procedures:
Full Depressurization: Always fully depressurize the waterjet system and follow lockout/tagout procedures before removing the check valve body
Inspect Weep Slot: Check the weep slot for any water leakage, which indicates seal failure within the check valve assembly
Internal Passage Inspection: During overhaul, inspect the internal bores and sealing surfaces for pitting, scoring, or erosion
Replace with Repair Kit: When rebuilding, use the check valve repair kit (P/N 303401) which contains all necessary internal components for a complete overhaul
Torque Compliance: Tighten the check valve retaining nuts to the specific torque values listed in the equipment service manual
Clean Installation: Thoroughly clean the body cavity and all sealing surfaces before installing new internal components
Lubrication: Apply high-pressure grease to seals and threads during reassembly to prevent galling
Replacement Criteria: Replace the check valve body immediately if cracks, severe internal erosion, thread damage, or visible deformation is detected
Cross-Reference Information:
