Collapsing Pin Relief Valve

ENGINEERED FOR RELIABILITY AND SAFETY

American Block’s Collapsing Pin Relief Valve (CPV) is designed for precise pressure control, utilizing an air-balanced piston axially loaded by the pin’s pressure load. The status of the valve is easily visible by checking the condition of the collapsing pin, which can be replaced in under a minute without special tools.

FEATURES & BENEFITS

✔ Rugged Valve Body – Full penetration welds pressure tested at 15,000 PSI with x-ray and magnetic particle inspections
✔ Hammer Union Connections – Removable wing nut for easy replacement if damaged
✔ Enhanced Sealing – O-ring added for superior water intrusion protection
✔ Grease Fitting – Ensures full thread coverage and early O-ring detection
✔ Lift Point – Provides a safe method for installation and maintenance
✔ No Moving Parts – Actuation and trigger mechanism is controlled by the pin
✔ Fast Repairs – Complete major overhaul in less than 30 minutes
✔ No Calibration Needed – Simple reassembly without recalibration

SAFETY PIN CAGE DESIGN (OPTIONAL)

🔹 80% visibility for quick pin status verification
🔹 Water-jet design with no sharp edges
🔹 Spring-loaded safety latch for secure closure, even under pump vibrations
🔹 Durable stainless steel construction (⅛” thick) for corrosion resistance
🔹 Bolt-free installation with integrated retention plate

REPLACEMENT PINS

🔹 Set pressure is determined by the installed pin
🔹 Interchangeable with existing valve designs
🔹 Tamper-proof and resistant to pressure fluctuations and environmental conditions

SPARE PARTS AVAILABLE

✔ Major Repair Kits
✔ Minor Repair Kits (Seal Kit)
✔ Bonnet Repair Kits
✔ Safety Pin Cage Kits