wilo scp split case base mounted pumps - · pdf filewilo scp split case base mounted pumps...

Wilo SCP Split Case Base Mounted Pumps

Horizontal Split Case, Double Suction, Single and Two Stage Pumps – March, 2013Marcos D. Roimicher, Product Manager BS Market Segment, Product Management Department

120-04-003-0413

2

Agenda

April 2013Wilo SCP split Case Base Mounted Pumps – Marcos D. Roimicher

1. Features and Benefits

2. General Technical Specifications

3. Model Number Designation

4. Family Curves

5. Detailed Technical Features / Construction Details / Features and Benefits

6. Markets and Applications

7. Options

3

Features and Benefits

Horizontal Split Case, Double Suction Design

• Simple access to rotating assembly

• Hydraulically balanced

• Highest efficiency of any pump type in Wilo product line

WILO Brain “Easy Read” Model Numbering System

• References flange size and max impeller size in standard North American units

Uses Baldor NEMA Frame Foot Mount Motors (other Manufacturers are OK)

• All voltages and enclosures available

• Various efficiency types and VFD-ready

• Do not need to be Inverter Duty

• Optional Aegis Ring motors available


4


Excellent Delivery Times – 4-6 weeks

• Common pump ends and motors stocked in Thomasville, Georgia

¼” Pressure Gauge Tappings Standard

• Suction and discharge

• Maybe be supplied with BSP to NPT adapters

Excellent Commercial Pump Warranty

• 24 months from date of purchase


5

General Technical Specifications

Size Range – Flange Size

• 2” to 20”

• 48 Models @ 4 Pole (1800 RPM), 6 Models @ 6 Pole (1200 RPM)

Horsepower Range

• 1 ½ to 500 HP

Performance

• Flow range from 88 - 15,400 US GPM

• Heads from 43 - 700’ TDH

Pressure Ranges

• Maximum working pressure: standard construction – 230 psi with standard mechanical seal limitations

• Maximum working pressure: optional construction (with 250 # Flange Drilling) – 400 psi

• Maximum inlet pressure: 150 PSI mechanical seal or 75 PSI gland packed

• Hydrostatic test pressure: 1.5 times working pressure


6

General Technical Specifications

Temperature Range for HVAC applications

• + 18°F to +250°F (-8°C to +120°C)

Approved Liquids

• Water-glycol mixtures - for 20-40% glycol and fluid temperature ≤104°F (40°C)

Standard Construction Material Specification

• Cast iron, bronze fitted, mechanical seal type

Noise and Vibration Levels to Hydronic Institute Standards


7

Model Number Designation

SCP

• Split Case, Base Mounted, Double Suction Pump

• Additional configurations available

4 Suction (Inlet) Size in Inches

• 125# ANSI raised face standard (150# same as 125#)

• 250# ANSI raised face optional (300# same as 250#)

3 Discharge (Outlet) Size in Inches

8 Maximum Impeller Diameter in Inches

HA Hydraulic Type – HA, HB, DS, HS, DV Types

Materials Code (


SCP 4 x 3 x 8 - HA

Note: Complete units include motor HP, motor enclosure, # poles (RPM), frame size, phase and voltage

8

Model Number Designation

HA Hydraulic Type – HA, HB, DS, HS, DV Types Mate

• HA – stands for Hydraulic Design A

• HB – stands for Hydraulic Design B

• DS – stands for Dual Stage, (2) impeller design

• HS – stands for impeller one side suction but it is like an NL (end suction) with balancing holes and have two neck ring diameters to accommodate wear rings or neck rings

• DV – stands for Double Volute [(2) passages in delivery of SCP, partition in delivery branch]

e (


SCP 4 x 3 x 8 - HA

9

Family Curves – 60 Hz


10

Model Sizes


11

Detailed Technical Features


Single Stage Pump with Mechanical Seal

12



Two-Stage Pump with Mechanical Seal

13


• Materials of Construction – Casing, Impeller, Shaft, Neck Rings, Shaft Sleeves


Component Version C0

Casing Cast iron A 48 CLASS 35 EN-GJL-250

Impeller Cast iron A 48 CLASS 35 EN-GJL-250

Shaft Stainless steel A 276 Type 410 X12cr13

Neck ring Bronze B 584 C93 700 G-CuPb 10 Sn

Shaft sleeve Stainless steel A 276 Type 410 X12cr13

Component Version C1 (Standard Construction)

Casing Cast iron A 48 CLASS 35 EN-GJL-250

Impeller Bronze B 584 C83 600 G- CuSn5 ZnPb




14


• Materials of Construction - Casing, Impeller, Shaft, Neck Rings, Shaft Sleeves



Casing Ni-resist cast iron BS 3468 Gr 2 DIN 1694 GGL-NiCr 20 2

Impeller Bronze B 584 C83 600 G- CuSn5 ZnPb

Shaft Stainless steel BS 970 316 S16DIN 17006

X5CrNiMo1810




Casing Stainless steel BS 3100 316 C16DIN17445

X6CrNiMo1810

Impeller Stainless steel BS 3100 316 C16DIN17445

X6CrNiMo1810

Shaft Stainless steel BS 970 316 S16DIN 17006

X5CrNiMo1810

Neck ring Stainless steelASTM A743 Gr CF-8M

A182-F316H

Shaft sleeve Stainless steel ASTM A276 Type 316SS

15


• Materials of Construction - Casing, Impeller, Shaft, Neck Rings, Shaft Sleeves

• General Material of Construction:

• Standard materials – cast iron / bronze / carbon steel

• Material variants – ductile iron / cast steel / stainless and alloy steels

• Special materials – duplex stainless steel and austenitic irons

• Custom bottom suction or centerline suspension



Casing Ductile iron BS 2789 500.7 DIN 1693 GGG50

Impeller Bronze BS 1400 LG2 DIN 1716 G-CuPb 15 Sn




16


Materials of Construction – Mechanical Seals


CodeSeal Combinations

Face CombinationsFriction faces Joints / O-ring Code DIN 24960

E0 Carbon/ceramic EPDM A V E G G

E1 Carbon/carbide SIC EPDM A Q1 E G G

E2 Carbide SIC/ Carbide SIC EPDM Q1 Q1 E G G

E3 Carbon / Carbide Tungsten. EPDM A U E G G

EA Carbon/carbide SIC ACS EPDM A Q1 E G G

V0 Carbon/ceramic VITON A V V G G

V1 Carbon/carbide SIC VITON A Q1 V G G

V2 Carbide SIC/ Carbide SIC VITON Q1 Q1 V G G

V3 Carbon / Carbide Tungt. VITON A U V G G

P0 Packing Gland : Graphite impregnated

17


Painting

• 2-part epoxy paint as per internal standards

• Primer: Red Oxide Zinc Coated ~ 40 microns thick

• Final top coat: Enamel paint ~ 40 microns thick - “Wilo green” (Pantone 334) as standard

• Customized paint available upon request, will require longer lead time and extra cost

Construction Features

• Short shaft sleeve design

• Monobloc design – bearing support in the lower casing = easier to service

• Pressure rating (standard construction) 150 PSI, hydrostatically tested to 1.5 times (225 psi) per Hydraulic Institute Standards

• Eye bolt for lifting

• Oversized permanently lubricated (sealed-ZZ) radial ball bearings

• Improved lubrication and cooling of mechanical seal through seal flush lines


18



Short shaft sleeve

Nut

Keyed Impeller

19




Easy maintenance• Horizontal Split Case concept:

o The top casing can be removed, in order to have direct access to the rotating components

o Reduced maintenance downtime

Material Information• Casing:

o Standard construction in Cast Iron ASTM A48, Class 40 (EN GJL 250)

o Alternative materials available on request (Bronze, Stainless Steel, etc)

20




Easy maintenance• Tongue & groove wear rings:

o To guarantee correct location on reassembly

o To avoid wear on the casing

o Longer seal lifeMaterial Information• Wear rings:

o Standard construction in Bronze

o Alternate materials available on request

21




More reliable• Double suction concept:

o The impellers are hydraulically balanced so the axial thrust is minimized

o To minimize the NPSHr (ΣFaxial = 0)

o More reliableMaterial Information• Impeller:

o Standard construction in Bronze


(ΣFaxial = 0) (ΣFaxial = 0)

22




Extended Life• Simply supported impeller

design concept:o To reduce shaft

deflectiono To minimize vibrationo To reduce radial loadso Bearings can also be

removed without disturbing top of casing

o Longer bearings and seal life

Material Information• Shaft:

o Standard construction in Stainless Steel


Fradial Fradial

Fimpeller

23




Extended Life• Seal flush lines:

o To avoid premature wear of the mechanical seals

o Cyclone separators are an available option for abrasive fluids

o Longer seal lifeMaterial Information• Seal flush lines:

o Standard construction in Stainless Steel


24



Tongue & groove neck ring design eliminates axial displacement and seizure of rotating assembly

Impeller double suction (hydraulically balanced), minimizes axial thrust

Internal flush with seal water insures maximum seal life (SS tubing for Long Life)

Double lock nut and keyarrangement ensuresreverse rotation of shaft sleeve

Permanently Lubricated (“sealed for life”-ZZ) radial ball bearings

25

Industry

Markets and Applications


Building Services Main applications :

Air conditioning

Heating

Boosting

Main Sales Area : • World Wide

Main applications :

Cooling

Heating

Water transfer on process applications

Main Sales Area : World Wide

Municipal Main applications :

Water intake

Transportation

Distribution

Main Sales Area :• World Wide

26

Options


NUMBER OF STAGES

Single StageMultistage

POSITION OF SHAFT

Horizontal Pump

Direct Motor Mounting (standard flexible coupling) Using Extention ShaftingDouble extended - one end of pump coupled to motor, other end coupled to an engine

IMPELLER DESIGN

Single SuctionDouble Suction

LUBRICATION

Grease Lubrication with Antifriction BrgsOil Lubrication with Antifriction BrgsOil Lubrication with Journal Brgs.

Based On Shaft Sealing

Gland SealingMechanical Sealing

DRIVE

• a) Motorb) Motor VFD

Compatible• Engine

27

Options

Cyclone Sediment Separator

• Provides clean, abrasive-free injection flow for flushing the surfaces of the mechanical shaft seal (longer lead time and extra cost)

• John Crane – model 100 (nylon), 1/2” NPT


28

Questions/Comments?


wilo scp split case base mounted pumps - · pdf filewilo scp split case base mounted pumps...

Documents