Briggs & Stratton 13D1-19, 13D1-(19) PPO manual Suction Lines

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10 SERIES

OM−05463

 

 

forced type to prevent collapse under suction. Us- ing piping couplings in suction lines is not recom- mended.

Line Configuration

Keep suction and discharge lines as straight as possible to minimize friction losses. Make mini- mum use of elbows and fittings, which substan- tially increase friction loss. If elbows are necessary, use the long-radius type to minimize friction loss.

Connections to Pump

Before tightening a connecting flange, align it ex- actly with the pump port. Never pull a pipe line into place by tightening the flange bolts and/or cou- plings.

Lines near the pump must be independently sup- ported to avoid strain on the pump which could cause excessive vibration, decreased bearing life, and increased shaft and seal wear. If hose-type lines are used, they should have adequate support to secure them when filled with liquid and under pressure.

Fittings

Suction lines should be the same size as the pump inlet. If reducers are used in suction lines, they should be the eccentric type, and should be in- stalled with the flat part of the reducers uppermost to avoid creating air pockets. Valves are not nor- mally used in suction lines, but if a valve is used, install it with the stem horizontal to avoid air pock- ets.

Strainers

If a strainer is furnished with the pump, be certain to use it; any spherical solids which pass through a strainer furnished with the pump will also pass through the pump itself.

If a strainer is not furnished with the pump, but is installed by the pump user, make certain that the total area of the openings in the strainer is at least three or four times the cross section of the suction line, and that the openings will not permit passage of solids larger than the solids handling capability of the pump.

This pump is designed to handle up to 1 1/2-inch (38,1 mm) diameter spherical solids.

Sealing

Gauges

Since even a slight leak will affect priming, head,

 

 

and capacity, especially when operating with a

Most pumps are drilled and tapped for installing

high suction lift, all connections in the suction line

discharge pressure and vacuum suction gauges. If

should be sealed with pipe dope to ensure an air-

these gauges are desired for pumps that are not

tight seal. Follow the sealant manufacturer’s rec-

tapped, drill and tap the suction and discharge

ommendations when selecting and applying the

lines not less than 18 inches (457 mm) from the

pipe dope. The pipe dope should be compatible

suction and discharge ports and install the lines.

with the liquid being pumped.

Installation closer to the pump may result in erratic

 

readings.

 

 

Suction Lines In Sumps

SUCTION LINES

If a single suction line is installed in a sump, it

 

should be positioned away from the wall of the

To avoid air pockets which could affect pump prim-

sump at a distance equal to 1-1/2 times the diame-

ter of the suction line.

ing, the suction line must be as short and direct as

 

possible. When operation involves a suction lift, the

If there is a liquid flow from an open pipe into the

line must always slope upward to the pump from

sump, the flow should be kept away from the suc-

the source of the liquid being pumped; if the line

tion inlet because the inflow will carry air down into

slopes down to the pump at any point along the

the sump, and air entering the suction line will re-

suction run, air pockets will be created.

duce pump efficiency.

 

 

INSTALLATION

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Contents Models With Parts ListGORMAN-RUPP Company D MANSFIELD, Ohio Page Installation − Section B Table of Contents IntroductionSafety Section a Troubleshooting − Section DTable of Contents Introduction Safety − Section a Series Installation − Section B Preinstallation InspectionPositioning Pump Suction and Discharge PipingSuction Lines Discharge Lines Recommended Minimum Suction Line Submergence vs. VelocitySeries Starting Operation − Section CPriming OperationStopping Series Troubleshooting − Section D Priming PrimeTrouble Possible Cause Probable Remedy Pump Stops or Preventive Maintenance Schedule Preventive MaintenancePump Maintenance and Repair Section E Section Drawing Pump Model 13D1−19Parts List Pump Models 13D1−19 From S/N 1259620 upD1−19 Pump Parts Only 13D1−19 Pump Parts Only Pump and Seal Disassembly and Reassembly Series −855 Seal Assembly Lubrication Extent and Duration of Warranty GORMAN-RUPP Company GORMAN-RUPP of Canada Limited

13D1-(19) PPO, 13D1-19 specifications

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