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OBN994R | Bronze Gear Pump with Relief, 1/2 Ports | (N994)

Art. No.: ob_obn994r

Key Features:

Material: Bronze housing and gears, stainless steel shaft
Port Size: 1/2" NPT
Seal Type: O-ring (standard); lip and mechanical seals optional
Relief Valve: Factory set at 50 PSI; adjustable
Max Pressure: Up to 100 PSI (depending on fluid and seal)
Max Speed: 1750 RPM (lower for viscous fluids)
Temperature Range: Dependent on seal type; consult factory for specifics
Bearings: Carbon graphite, self-lubricating
Mounting: Close-coupled to motor via adapter bracket and flexible coupling
Suction Lift: Up to 20 feet (with foot valve and proper priming)
Rotation: Clockwise from shaft end (reversible with relief valve relocation)

Lead times temporarily extended to 32 weeks.

$991.32

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The OBN994R is a bronze close-coupled rotary gear pump engineered for dependable fluid transfer in industrial, marine, and OEM systems. Designed with 1/2" NPT ports and an integrated relief valve, this positive displacement pump ensures consistent flow and pressure while offering excellent corrosion resistance.

Constructed with precision-machined bronze housings and helical bronze gears, the OBN994R features stainless steel shafts and self-lubricating carbon bearings for quiet, long-lasting operation. The pump is equipped with an O-ring seal as standard, with optional lip or mechanical seals available for enhanced leak protection.

Recommended Applications:
Ideal for transferring water, oils, and mild chemicals (pH 4–11) in marine, industrial, and OEM systems requiring compact, corrosion-resistant, and pressure-stable performance. Not recommended for abrasive or solid-laden fluids.

Recommended Parts

Repair Kit N994 994 | (OB11333)

OBN994R | Bronze Gear Pump with Relief, 1/2 Ports | (N994)

OBN994R | Bronze Gear Pump with Relief, 1/2 Ports | (N994)

$991.32