Graco 278778 HM25 Gen 2 Adapter

HM25 Gen 2 Adapter – Graco Part 278778

Compatible Systems

• Graco InvisiPac HM25c hot melt delivery systems
• Equipment whose Graco parts list calls for part number 278778

Graco 278778 HM25 Gen 2 Adapter (Graco part number 278778) is an adapter. An adapter or coupling joins components with different or matching connections; check the thread type (NPT, BSP, SAE, JIC, DIN) before ordering. The HM25c is a Graco InvisiPac tank-free hot melt melter rated at 25 lb (11.3 kg) per hour that melts adhesive pellets on demand.

About the InvisiPac HM25c hot melt delivery systems

Pellets feed from a hopper or external bin, melt on demand and are dispensed; Graco says the melting chamber reaches set temperature in about 10 minutes. Graco lists uses such as: Case and carton sealing on end-of-line packaging. Systems are offered in 4 and 8 channel versions, with 480 V versions.

What the Terms in the Part Name Mean

• HM25: InvisiPac HM25c model (25 lb/hr melt rate per Graco).

Before You Order

• Check the thread type: NPT, NPSF, BSP, BSPP, SAE, JIC and DIN fittings can look alike but do not interchange.
• Check the size in the part description against the port or tube it connects to.
• Have your equipment model, and the serial number if available, ready if you contact us for help.

Service Notes

• Follow the pressure relief and lock-out steps in your Graco manual before servicing any pump, valve, applicator or electrical part.

Frequently Asked Questions