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UL/FM Approved Fire Pump w/Mechanical Seal?

UL/FM Approved Fire Pump w/Mechanical Seal?

UL/FM Approved Fire Pump w/Mechanical Seal?

(OP)
Could someone, please tell me can a fire pump be UL/FM approved with the mechanical seal or it has to be with packing?

Thank you in advance!

RE: UL/FM Approved Fire Pump w/Mechanical Seal?

Depends on the type of pump. If it is a centrifugal pump NFPA 20 has no requirements on the type of seal. If it is a positive displacement pump, NFPA 20 prohibits the use of packing and only permits either a mechanical or a lip seal.

RE: UL/FM Approved Fire Pump w/Mechanical Seal?

(OP)
Thank you Stookeyfpe!

The pump is a centrifugal horizontal split case, running at 1800RPM with an electrical motor, so if I understood it correct, it could be with a mechanical seal and UL/FM approved, right?    

RE: UL/FM Approved Fire Pump w/Mechanical Seal?

BDG011:

You are correct.

RE: UL/FM Approved Fire Pump w/Mechanical Seal?

(OP)
Thank you much Stookeyfpe!

RE: UL/FM Approved Fire Pump w/Mechanical Seal?

UL doesn't approve anything.  They just test items.

RE: UL/FM Approved Fire Pump w/Mechanical Seal?

UL Listed / FM Approved

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