8/12/2019 HSCTechSheet

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Horizontal Split Case

HVAC Pumps

Flex Coupled Configuration

Patterson horizontal split case pumps offer a

high-efficiency design that minimizes energy

consumption, and easy serviceability without

disturbing piping connections.

Benefits

Gauge taps at the suction and discharge connections for

complete monitoring flexibility

Durable flex coupling absorbs vibration

Easily removed coupling aids serviceability

Precision cast, dynamically balanced bronze impeller

minimizes vibration and maximizes bearing life

Precision bearings and machining limit shaft deflection

to only 0.002” at the seal face

Features

Flows to 6000 gpm, heads to 160’ TDH

OSHA coupling guard

Class 30 cast iron body

Standard case wear ring and grease-lubricated bearings

Standard silicon carbide mechanical seal; optional

tungsten carbide, with seal water flush line

Furnish and install _____ pumps with design capacities asoutlined and shown on plans. Pumps shall be high efficiency,horizontal split case design; base mounted with OSHA approvedcoupling guard. The pumps shall be single stage, class 30 castiron and capable of being ser viced without disturbing pipingconnections. Pumps should be suitable for 175 PSI workingpressure (std.) or 300 PSI (optional). Flanges shall be 125 lb. ANSI(std.) or 250 lb. ANSI (optional).

 The pumps shall have case wear rings and grease lubricatedbearings. The impeller shall be of the enclosed double suctiontype, bronze construction and shall be hydraulically anddynamically balanced. The impeller shall be keyed to the shaftand secured by lock nuts.

Pumps shall be designed for a maximum shaft deflection of0.002” at the seal face.

 The pumps shall have a replaceable bronze or stainless steelshaft sleeve and shall cover the liquid area under the seal. Thepump shall have a mechanical seal type _____________________ carbon vs. silicon carbide, with seal water flush line, ortungsten carbide (optional). Seal shall be suitable for continuous

operation at 250°F.

Casing shall have tapped holes on the suction and dischargeto accommodate gauges, fittings and drain ports.

Motors shall be EPAC/Nema rated and shall be of the size,voltage, and enclosure (ODP/TEFC) as outlined in the plans andspecifications. The motor shall be non-overloading throughoutthe entirety of the pump performance curve. (Optional:Premium efficiency motor.)

A flexible coupling shall be sized for non-overloadingconditions and capable of absorbing torsional vibration andease of serviceability. The coupling guard shall be of safetyyellow and meet all OSHA standards, secured to the base. Pumpand motor shall be factory aligned. The contractor shall re-alignupon installation of pump unit assembly prior to startup.

Each pump shall be factory hydrostatically tested perHydraulic Institute Standards.

Pumps shall be a Patterson Pump model _____________________________ or approved equal.

SPECIFICATIONS: FLEX COUPLED

Every pump hydrostatically pressure-tested

Optional 300-PSI working pressure model with 250-lb

discharge flanges

Bronze fitted construction with bronze shaft sleeves

standard; optional stainless steel shaft and stainless steelsleeve available

Carbon vs. silicon carbide

mechanical seal

Designed for maximum shaft

deflection of 0.002” at the seal face

Precision cast

dynamically

balanced bronzeimpeller

Case rings as

standard

8/12/2019 HSCTechSheet

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Horizontal Split Case HVAC Pumps

Flex Coupled

PATTERSON PUMP COMPANY

A Subsidiary of The Gorman-Rupp Company

Post Office 790 • Toccoa, Georgia 30577 U.S.A.

(706) 886-2101 • Fax: (706) 886-0023

E-mail: marketing@pattersonpumps.com • www.pattersonpumps.com • www.flo-pak.com

5/460327 T-HSCFC-1 ©2005 PATTERSON PU

Performance

CAPACITY IN U.S. GALLONS PER MINUTE

    T    O    T    A    L    H    E    A    D

    F    E    E    T

T  OT A L H E A  D 

F E E T 

PATTERSON HYDRAULIC COVERAGE CHART

1800 R.P.M.

180

160

140

120

100

80

60

40

20

0

180

160

140

120

100

80

60

40

20

0

       1       2       0

       1       4       0

       1       6       0

       1       8       0

       2       0       0

       1       0       0       0

       1       2       0       0

       1       4       0       0

       2       0       0       0

       8       0       0       0

       6       0       0

       8       0       0

       1       6       0       0

       6       0       0       0

       1       8       0       0

       4       0       0       0

       4       0       0

       1       0       0       0       0

S4B11A-1

S4A13A-1

S4C11A-1   S5A12A-2

S8B11A-3

S8A12A-3

S   1   0   A  1   3  A  -  4   

S10B12A-4

S6A12A-2

CAPACITY IN U.S. GALLONS PER MINUTE

    T    O    T    A    L    H    E    A    D    F    E    E    T

T  OT A L H E A  D 

F E E T 

PATTERSON HYDRAULIC COVERAGE CHART

1200 R.P.M.

180

80

70

60

50

40

30

20

10

0

180

80

70

60

50

40

30

20

10

0

       1       0       0

       1       2       0

       1       4       0

       1       6       0

       1       8       0

       5       0       0

       6       0       0

       7       0       0

       8       0       0

       9       0       0

       1       0       0       0

       1       6       0       0

       2       0       0       0

       3       0       0

       4       0       0

       1       2       0       0

       4       0       0       0

       1       4       0       0

       1       8       0       0

       2       0       0

       3       0       0       0

       5       0       0       0

       6       0       0       0

S4B11A-1

S4A13A-1

S4C11A-1

      S      1      0      A      1      3      A

   -      4

     S    1    0     B    1     2     A

   -    4S8B11A-3

S  8  A 1  2  A - 3  

S6A12A-2

S5A12A-2