Product ID: 05116751 – Poppet Pin (Discharge Check Valve Pin)

Description:
This component is a poppet pin, also known as a discharge check valve pin, designed for high-pressure waterjet intensifier pumps . It is a precision-machined, cylindrical pin that serves as a guiding and retaining element within the high-pressure discharge check valve assembly. The poppet pin is installed between the outlet poppet (discharge poppet) and the compression spring, ensuring proper alignment and movement of the poppet during valve operation . This component is designed for use with .875 inch (7/8") plunger intensifier systems operating at 60,000 PSI (approximately 4,137 bar) . Alternative or cross-reference part numbers include 05116751 and SP PRTS KIT-HP CHK VLV .

Applications:

• Used as a guiding pin within the high-pressure discharge check valve assembly of waterjet intensifier pumps .

• Installed between the outlet poppet (discharge poppet, Product ID 05116561) and the compression spring, positioning the poppet relative to the HP seat (Product ID 05112768) .

• Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI (approximately 4,137 bar), compatible with .875 inch plunger intensifiers such as Neoline and earlier series pumps .

Features:

• Constructed from high-strength, wear-resistant and corrosion-resistant material (typically hardened stainless steel) to withstand repeated contact with the poppet and spring under extreme pressure cycling .

• Precision-machined cylindrical geometry ensures proper fit within the check valve assembly, allowing the poppet to move freely without binding .

• Functions as a guide to maintain coaxial alignment between the poppet and seat, ensuring consistent sealing .

• Engineered as a wear component; the pin may wear over time and require replacement during check valve servicing .

Maintenance:

• Inspection: During check valve overhaul or preventive maintenance (recommended every 1,500 hours), inspect the poppet pin for signs of wear, deformation, or unusual wear patterns .

• Replacement Criteria: Replace the poppet pin if any visible wear, scoring, or deformation is detected. A worn pin can cause misalignment of the poppet, leading to poor sealing and pressure loss .

• Set Replacement: The seat, spring, and poppet valve should be replaced as a set to ensure optimal performance. When servicing the discharge check valve, replace the poppet pin simultaneously with these components .

• Spring Inspection: Inspect the compression spring for fatigue, breakage, or loss of tension; replace if damaged .

• Component Identification: The poppet pin is a small, cylindrical pin that typically remains inside the gland nut when the check valve is disassembled. Use care during disassembly to avoid losing it .

• Full Depressurization: Always fully depressurize the waterjet system and follow lockout/tagout procedures before removing the check valve assembly or replacing the poppet pin .

• Kit Availability: This poppet pin is available as part of high-pressure check valve repair kits (e.g., KMT# 72169725, WK000377), which include the seat, discharge poppet, poppet pin, inlet poppet, compression springs, and other required components for a complete valve overhaul .