81PB | Bronze Centrifugal Pedestal Pump

The Model 81PB Bronze Centrifugal Pump is a robust and versatile pump designed for various industrial applications. Crafted from high-quality bronze, this pump ensures durability and reliability. It features a mechanical face type seal and is available with Viton® or Teflon® seals on special order. The pump is engineered for heavy-duty performance, making it ideal for pulley drive applications. With a stainless steel shaft and the ability to convert to a close-coupled unit, the Model 81PB offers flexibility and efficiency in operation.

Advantages:

Durability: Made from high-quality bronze, ensuring long-term use and resistance to harsh conditions.

Versatility: Suitable for a wide range of applications, from industrial processes to marine environments.

Efficiency: Designed for optimal performance with heavy-duty ball bearings and a stainless steel shaft.

Flexibility: Can be converted to a close-coupled unit and operated in various orientations.

Reliability: Features a mechanical face type seal and optional high-performance seals for enhanced reliability.

All Bronze Construction:
Ensures long-lasting durability and resistance to corrosion.

Mechanical Face Type Seal:
Provides reliable sealing and reduces maintenance needs.

Optional Viton® or Teflon® Seals:
Available for enhanced chemical resistance and higher temperature applications.

Heavy Duty Ball Bearings:
Designed for pulley drive applications, ensuring smooth and efficient operation.

Stainless Steel Shaft:
Offers strength and resistance to wear and tear.

Field Convertible:
Can be easily converted to a close-coupled unit using a standard keyed shaft “C” flange motor.

Flexible Operation: Can be operated with the shaft in either horizontal or vertical positions.

Pipe Size	1 1/2” Inlet, 1 1/4” Outlet
Max Capacity	95 GPM (21.6 m³/h)
Max Head	100 ft (20 m)
Maximum Temperature	212°F (100°C) (higher with Viton® or Teflon® seals)
Suction Lift Capability	Up to 15 feet (4.6 m) or more (for self-priming models)
Rotation	Clockwise facing the pump shaft (standard factory rotation)
Seal Options	Viton® (S10) or Teflon® (S11)
Bearings	Heavy-duty ball bearings
Shaft Material	Stainless steel

Item	Part Name	Quantity	OB81PB	OB81PBS-10	OB81PBS-11	OB81PB-07
1	Pipe Plug	Qty. 4	OB5395	OB5395	OB5395	OB5395
2	Body	Qty. 1	OB7585	OB7585	OB7585	OB7585
3	Screw	Qty. 1	OB7656	OB7656	OB7656	N/A
4	Lock Washer	Qty. 1	OB7395	OB7395	OB7395	N/A
5*	Impeller Assy	Qty. 1	OB32354	OB32354	OB32354	OB32002
6*	Seal Assy	Qty. 1	OB32346	OB32360	OB32211	OB32346
7*	Seal Seat	Qty. 1	OB7427	OB7644	N/A	OB7427
8**	Seal Wearface	Qty. 1	OB7426	OB7426	N/A	OB7426
9**	Seal Head	Qty. 1	OB2913	OB6141	N/A	OB2913
7 & 8	Seat/Wearfa-ce Sub Assy	Qty. 1	OB742601	OB742602	N/A	OB742601
10*	O-Ring	Qty. 1	OB 9797-163	OB 9797-163	OB 9355-163	OB 9797-163
11	Screws	Qty. 12	OB5411	OB5411	OB5411	OB5411
12	Adapter	Qty. 1	OB7586-1	OB7586-1	OB7910-1	OB7586-1
13	Ret. Ring	Qty. 2	OB6053	OB6053	OB6053	OB6053
14	Ball Bearing	Qty. 2	OB5884	OB5884	OB5884	OB5884
15	Ret. Ring	Qty. 2	OB5885	OB5885	OB5885	OB5885
16	Key	Qty. 1	OB7428	OB7428	OB7428	N/A
17	Shaft	Qty. 1	OB7455	OB7455	OB7924	OB2392
18	Key	Qty. 1	OB6845	OB6845	OB6845	OB6845
19	Bearing Plate	Qty. 1	OB7587	OB7587	OB7587	OB7587
20	Slinger	Qty. 1	OB7447	OB7447	OB7447	OB7447
-	Repair Kit	-	OB10959	OB10884	N/A	OB12313

* 5, 6, 7, 10 - These parts are included in the Repair Kit.

** Seal parts sold only as seal assembly - item 6.

81PB | Bronze Centrifugal Pedestal Pump

Features

Technical Specifications

Exploded View and Parts List

Downloads

Data Sheet - 81PB [EN]

I and O - Centrifugal Pumps - Seal Replacement Instructions [EN]

I and O - Bronze or Aluminum Centrifugal Pumps [EN]

Quick-Pick Selection Charts [EN]

Quick-Pick Selection Charts [EN] (metric)