• Long Life - only three moving parts - components are
through hardened to Rc-54 or higher for wear resistance
and strength.
• Multi-pump Ratio Capability - outer drive gear allows
multiple pumps to be driven at different gear ratios by
a single motor.
Applications
Designed to provide stable, precise and repeatable flow
control of process fluids despite variations in temperature,
viscosity, and pressure. The Zenith BPB Series pumps are
broadly applied to metering services such as colorings,
catalysts, resins, flavorings, perfumes, vitamins, oils,
binders, adhesives, coatings, inhibitors, paints/varnishes,
polymers, lubricants, dyes, defoamers, pharmaceuticals,
urethanes, fuels, viscose, and many others for the world’s
top industrial companies

Zenith BPB Series pumps allow dependable control of
critical process streams or additives. High accuracy
eliminates costly overdosing associated with less accurate
methods, and the pumps often pay for themselves in
savings in one year or less. Concentrated solutions can
be precisely metered pulse-free without dilution.

Benefits and Features
• High Accuracy - stable, repeatable flow
control despite process variations in
temperature, viscosity, and pressure.
• High Pressure - precision manufacturing
techniques hold tolerances to ± .00005"
(1.25 micron), allowing gear clearances
to be kept to a minimum and high
process pressures to be achieved.
• Pulseless - precise rotary spur
gears provide smooth, continuous,
pulseless flow.
• Valveless - precision metering gears
eliminate troublesome check valves
used in reciprocating pumps.
• Active Flowmeter - unparalleled
mechanical precision combined with a
closed loop Zenith controller ensures
exact flow control without the addition
of expensive flowmeters.

Model	4391	4407	4776	5411	5596
Available Capacities	0.16, 0.297, 0.584 1.168, 1.752, 2.92 (cc/rev)	0.16, 0.297, 0.584 1.168, 1.752, 2.92 (cc/rev)	0.16, 0.297, 0.584 1.168, 1.752, 2.92 (cc/rev)	0.16, 0.297, 0.584 1.752, 2.92 (cc/rev)	0.16, 0.297, 0.584 1.168, 1.752, 2.92 (cc/rev)
Flow Rate	0.025-8.3 GPH 1.6-525 cc/min	0.025-8.3 GPH 1.6-525 cc/min	0.025-8.3 GPH 1.6-525 cc/min	0.025-8.3 GPH 1.6-525 cc/min	0.025-8.3 GPH 1.6-525 cc/min
Temperature Limit	300°F (150°C)	300°F (150°C)	300°F (150°C)	300°F (150°C)	300°F (150°C)
Recommended Speed Range	10-180 rpm	10-180 rpm	10-180 rpm	10-180 rpm	10-180 rpm
Pump Rotation (Facing Outer Drive Gear)	CCW	CCW	CCW	CCW	CCW
Inlet Pressure Range	0-300 psi 2068 kPa	40-500 psi 275-3447 kPa	40-500 psi 275-3447 kPa	0-300 psi 2068 kPa	0-300 psi 2068 kPa
Discharge Pressure Limit	750 psi 5171 kPa	750 psi 5171 kPa	1500 psi 10342 kPa	1500 psi 10342 kPa	750 psi 5171 kPa
Viscosity Range	1-100000 cp	1-100000 cp	1-100000 cp	1-100000 cp	1-100000 cp
1/4" or 1/8" NPT female or 1/2" OD tube w/37° flare 300 Series SS Trunnions	1/4" or 1/8" NPT female or 1/2" OD tube w/37° flare 300 Series SS Trunnions	1/4" or 1/8" NPT female or 1/2" OD tube w/37° flare 300 Series SS Trunnions	1/4" or 1/8" NPT female or 1/2" OD tube w/37° flare 300 Series SS Trunnions	Port thru rear plate 3/8�?24 UNF straight thread 1/4" flared rigid tube connectors	Inlet/Outlet Port Connections
Pivot Mount to non-wetted L-5677 Saddle	Pivot Mount to non-wetted L-5677 Saddle	Pivot Mount to non-wetted L-5677 Saddle	Pivot Mount to non-wetted L-5677 Saddle	Pivot Mount to non-wetted L-5677 Saddle	Mounting
Materials of Construction	400 Series Stainless Steel	400 Series Stainless Steel	400 Series Stainless Steel	400 Series Stainless Steel	400 Series Stainless Steel
PTFE Lip with fluoro elastomers (Viton®) O-ring	D2 Universal Face Seal	D2 Universal Face Seal	PTFE Lip with fluoro elastomers (Viton®) O-ring	PTFE Lip with fluoro elastomers (Viton®) O-ring	Seals
Specifications

 

Model	BPB-4391	BPB-5596	BPB-4407	BPB-4776	BPB-5411
Summary	Standard Materials, Trunnion Porting, Lip Seal	As 4391 except Rear Plate Porting	As 4391 except All Metal Face Seal	As 4407 except 6 Binder Screws	As 4391 except 6 Binder Screws