Darley PTO Pumps
MADE IN
USA
HM 250, 350, 500 PTO Pump
The HM pump has been a top seller for Darley and throughout the industry for many years due to its compact design, capacity, durability and simplicity in maintenance. The HM is an ideal pump for tanker applications, brush trucks and mini pumpers, and provides excellent pump and roll performance. The compact design also allows it to fit into tight spots in retrofits of existing apparatus. The HM pump is available in three different assembly levels, from the pump only to a fully manifolded offering to meet all needs.
Applications
Features
u Mini pumper u Vertically split, cast iron, u Tanker bronze fitted pump casing u Wildland/attack fire u Impeller seal ring opposed
Uses
Assembly #1
u Oversized, deep groove
radial type bearings for longer life design to eliminate end thrust u 10 tooth splined shaft u Splined impeller (not keyed) for durability u Helical cut gears for longer life
u Single stage u Centrifugal ASSEMBLY #1 Single stage, centrifugal pump, gearbox assembly, 21/2" NPT discharge, 3" NPT suction (HM250/350), 4" NPT suction (HM500) Dimensions: HM250/HM350: 15"L x 11"W x 18"H, 127 lbs. (58 kg) HM500: 16" x 11"W x 18"H, 140 lbs. (64 kg)
ASSEMBLY #2 Single stage, centrifugal pump, gearbox assembly, suction elbow, discharge head with check valve, 2 - 21/2" NPT discharge, 3 - 3" suction (HM250/350), 3 - 4" victaulic suction (HM500) Dimensions: HM250/HM350: 25"L x 14"W x 31"H, 150 lbs. (68 kg) HM500: 27"L x 16"W x 34"H, 200 lbs. (91 kg)
HM 250 Performance 250 gpm @ 150 psi 175 gpm @ 200 psi 125 gpm @ 250 psi
HM 350 Performance 350 gpm @ 150 psi 245 gpm @ 200 psi 175 gpm @ 250 psi
HM 500 Performance 500 gpm @ 150 psi 350 gpm @ 200 psi 250 gpm @ 250 psi
Assembly #2
PUMPS
ASSEMBLY #3 Single stage, centrifugal pump, gearbox assembly, suction elbow, discharge head with check valve, complete manifolds, discharge valves, adapters and caps, 2 - 21/2" NH 1/4 turn ball valves, 2 - 3" NH suction adapters and caps (HM250/350), 2 - 4" NH suction adapters and caps (HM500)
Assembly #3
Dimensions: HM250/HM350: 25"L x Body Width x 31"H, 325 lbs. (148 kg) HM500: 27"L x Body Width x 34"H, 425 lbs. (193 kg)
1-1/2 & 2-1/2 AG PTO Pumps Pump Casing
1-1/2AG
Bearings
u Deep-groove radial-type ball bearings, bronze fitted is standard; all-bronze opt. oversized for long life. Bearings are protected at openings from road dirt and water splash with oil seals. Pump Shaft u Precision-ground stainless steel with Shaft Seal long-wearing ceramic hard-coating under packing glands. Shaft is splined u Easy maintenance of the exclusive for broached impeller hubs for greater Darley Injection Packing System which allows pump to be repacked in minutes. resistance to wear, torsional vibration Opt. mechanical seal is available. and torque imposed by engine. u Vertically split type, aluminum alloy,
Impeller
296
Inlet/Outlet
u 1-1/2AG: 2" NPT suction, 1-1/2 AG Performance 150 gpm @ 80 psi balanced and splined to pump shaft for 2" NPT discharge 100 gpm @ 200 psi 1 u 2-1/2AG: 2 /2" NPT suction, precision fit and durability. Seal ring 35 gpm @ 300 psi 21/2" NPT discharge design eliminates end thrust.
u High-strength bronze alloy accurately
1.800.323.0244 | www.edarley.com/pumps
Call for complete specifications
2-1/2 AG Performance
325 gpm @ 150 psi 260 gpm @ 200 psi 140 gpm @ 300 psi