- Hooks straight onto COP 1840+ and COP 1838hd+ accumulators — same threads and pressure range as the OEM kit, no adapters needed.
- The manometer pair gives you a real‑time look at bottle pressure and filling pressure, so you can hit the exact pre‑charge value the hammer manual calls for.
- Safety valve is preset to bleed off before you reach dangerous bladder pressure — keeps the crew safe and the accumulator from splitting.
- All the small parts — ball valve, needle valve, elbows, connectors — are brass or zinc‑plated steel. We haven't seen corrosion issues even in wet underground headings.
- Comes with a labeled parts breakdown and the hose lengths are cut to the OEM spec, so you can swap a worn hose without pulling the whole kit apart.