Product ID: 05116769 – Sealing Head Assembly (Check Valve Assembly for SL-IV Intensifier Pump)

Description:
This component is a complete Sealing Head Assembly, also known as a check valve assembly, specifically designed for SL-IV series waterjet intensifier pumps. It is a pre-assembled unit that serves as the critical interface between the high-pressure cylinder and the outlet plumbing, controlling the one-way flow of water into and out of the intensifier cylinder.

The assembly integrates both the inlet and outlet check valves, poppets, seats, springs, retainers, and high-pressure seals within a single housing. By ensuring a leak-free connection and consistent pressure output, this component is vital for maintaining cutting performance and protecting other pump components from backflow damage.

This assembly is manufactured by KMT Waterjet Systems, often branded under AccuStream, and is fully interchangeable with original part number 1-11481.

Applications:

• Used as the primary check valve assembly at the high-pressure end of KMT SL-IV series intensifier pumps.

• Installed between the high-pressure cylinder and the high-pressure outlet line to direct pressurized water toward the cutting head.

• Suitable for ultra-high pressure waterjet systems operating at pressures up to 60,000 PSI (approximately 4,137 bar), with compatibility up to 90,000 PSI (approx. 6,200 bar).

• Compatible with KMT, AccuStream, FLOW, OMAX, and WSI waterjet intensifier systems.

Features:

• Complete Assembly: Includes the sealing head body, gland nut, inlet poppet retainer, and is used in conjunction with check valve repair kits. It houses the inlet and outlet poppet valves that control unidirectional water flow.

• High-Strength Construction: Manufactured from hardened stainless steel or high-strength alloy steel to withstand harsh, high-pressure waterjet environments.

• High-Pressure Rating: Engineered for continuous operation at 60,000 PSI (4,137 bar) with a weight of approximately 1.47 kg (3.24 lbs). Capable of withstanding up to 90,000 PSI.

• Precision-Machined: CNC-machined to exact tolerances ensuring perfect alignment with the outlet poppet valve, spring guide, and gland nut for smooth, leak-free operation.

• OEM Compatibility: Designed as an OEM replacement part for KMT SL-IV systems and is cross-compatible with many major waterjet brands.

Maintenance:

• Critical Component: The Sealing Head Assembly is a primary wear component in the waterjet intensifier. Regular inspection is required to maintain system pressure and cutting performance.

• Inspection: During intensifier overhaul, inspect the assembly for external leakage, pressure drop, or performance degradation. Check internal components (poppets, seats, springs) for pitting, erosion, or wear.

• Seal Maintenance: The assembly requires the use of specific O-rings (e.g., metric O-rings are used on the sealing head) and backup rings. All seals should be replaced during service. Common associated repair components include the Check Valve Repair Kit (e.g., 72169725).

• Complete Replacement: Due to the precision and complexity of the internal components, it is often recommended to replace the entire assembly when worn rather than attempting to rebuild individual parts, although repair kits are available.

• Torque Compliance: When reinstalling, tighten the retaining gland nut to the torque value specified in the equipment service manual to ensure proper internal compression.

• Full Depressurization: Always fully depressurize both the hydraulic system and the high-pressure water system before removing or servicing the sealing head assembly. Follow lockout/tagout procedures.