FORM SPEC SHEM-PRH-AWF, Revised 01/11	COPYRIGHT © 2011 SHIPPENSBURG PUMP COMPANY, INC. 
Shipco® IS A REGISTERED TRADEMARK OF SHIPPENSBURG PUMP CO., INC. 	PRINTED IN THE U.S.A. • BEIDEL PRINTING HOUSE, INC., 717-532-5063
SHIPPENSBURG PUMP COMPANY, INC., P.O. BOX 279, SHIPPENSBURG, PA 17257
PHONE 717-532-7321 • FAX 717-532-7704 • www.shipcopumps.com
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SUGGESTED SPECIFICATIONS	SHIPCO® PUMPS
TYPE shem-PRH boiler feed units with AWF pumps
and preheat assembly
CAPACITY SCHEDULE MUST BE COMPLETED.
Furnish and install according to drawings and manufacturer’s instructions the quantity of SHEM-PRH preheat boiler feed units as shown on the drawings. Each unit shall consist of (1) steel receiver minimum 3/16" thick with a quantity of ______ boiler feed pumps, (1) direct injection steam heating assembly, electrical controls and accessories.
The boiler feed receiver shall be of welded minimum 3/16" thick steel construction, elevated to meet the NPSH requirements of the boiler feed pumps (with safety factor), horizontal with convex flanged and dished heads, supported by a structural steel frame and have a capacity as shown on the drawings. Receiver material and thickness shall be as shown on the drawings. The boiler feed receiver shall be equipped with the following: (1) inlet cascade baffle, (1) top and bottom shut-off water level gauge with automatic shut-off if glass is broken, (1) dial thermometer, (1) high water float switch alarm, (1) low water float switch for alarm, (1) manhole for tank inspection, (1) make-up water assembly consisting of a 2-pole externally adjustable float switch and electric solenoid valve, (1) low water cut-off float switch, and (1) magnesium anode. A suction isolation valve and valve in each bleed line for maintenance shall be installed in the suction piping between the receiver and pump to permit servicing the pumps without draining the receiver. A discharge pressure gauge shall also be provided for each pump.
All controls switches and valves to have a NEMA _____ rating.
A cast iron basket inlet strainer with vertical self-cleaning bronze screen shall be provided for the receiver inlet.
A direct injection steam heating assembly shall be installed in the receiver. The heating assembly shall consist of a double flange mounted schedule 40 stainless steel injection pipe, steam control valve, temperature regulation (pressure regulator for systems over 15 PSIG steam pressure), wye strainer and compound gauge for measuring vacuum or pressure gauge. The heating assembly shall be sized for the capacities as shown on the drawings.
The make-up water assembly shall be sized to equal the capacity of one of the boiler feed pumps. The solenoid valve shall be packless, piston pilot-operated with a cushioned closing and have an epoxy-resin molded waterproof coil. The valve shall be equipped with a wye strainer, a 3-valve manual bypass and air gap assembly for anti-siphon.
The centrifugal water pumps shall be mounted on the receiver suction piping. The pump shall be (Horizontal or Vertical) a multi-stage cast iron construction with bronze wearing rings. The impeller(s) shall be Bronze for long life and durability. The pump shall be flexible coupled permanently aligned with a C-face motor connected to the bearing housing which is C-face connected to the pump. The bearing frame shall be designed with grease fittings for bearing lubrication. Bearings shall be extra heavy ball type with high temperature grease. The pump shall be fitted with a seal flush line designed to keep the seal cavity pressure at or below 50 psig. The pump suction flange shall be an ASA design. The pump discharge shall be also be an ASA flange design. The Silicon Carbide/ Viton seal shall be rated for 300°F service. The entire pump shall be dynamically balanced to deliver its full rated capacity with _____ feet of NPSH. The pump shall have a NEMA standard shaft. The horsepower and electrical characteristics shall be as shown on the drawings.
Each boiler feed pump with a rating of 75 PSIG or more will have a factory installed automatic flow control valve in the discharge of each pump.
The manufacturer shall furnish a certified pump performance test. The pump manufacturer shall furnish complete elementary and connection wiring diagrams and installation and operation instructions.
The entire pump package will be U.L. labeled when a control panel is furnished.
Electrical control specifications must be added. See electrical specifications for boiler feed pumps.
Manufacturer shall be Shipco® PUMPS, P.O. Box 279, Shippensburg, PA 17257.
Capacity Schedule (Required to complete suggested specifications).
TYPE SHEM-PRH BOILER FEED PUMPS SCHEDULE:
Receiver: __________ gallons, __________ " dia. x __________ " long x __________ " thick steel elevated __________ inches
Quantity: __________ boiler feed pumps each rated __________ GPM @ __________  PSIG with __________  HP and
 Motor Enclosure of __________; 3500 RPM; requiring ______ ft. of NPSH
Supply electrical power characteristics: __________ volts, __________ phase, 60 cycles
Control voltage: 115 volts, 1 phase, 60 cycles
Water supply pressure _________ PSIG
Steam heating assembly to pre-heat _________ GPM from _________ °F to _________ °F with _________ PSIG steam supply pressure