Corrosion Resistant Pumpscms.esi.info/Media/documents/Crest_corrosionresist_ML.pdf · 2016. 6....

Corrosion Resistant Pumps

Horizontal & Vertical Chemical Pumps

163 Stourvale Road Southbourne

Bournemouth BH6 5HQ Tel: 01202 425000 Fax: 01202 425577

www.crestpumps.co.uk

E-mail: [email protected]

Crest Pumps

THE COMPANY

Crest Pumps has manufactured high quality, corrosion-resistant pumps at value for money prices for the chemical and allied industries since 1973. We are a privately owned, independent company dedicated to providing the highest level of customer service at every stage of our operation, from quotation to after-sales service. A comprehensive manufacturing and test facility gives us total control of production, resulting in particularly short lead times of fully-tested specialist pumps.

DESIGN

Technical advances are constantly explored and incorporated to improve the effectiveness of our products. “A pump is a pump” is no longer the case. Crest pumps are designed to cope with an extensive range of arduous applications, so you will find that a `special’ solution often comes with a standard price tag. And our computer aided design facility allows us to develop a product if you have a specific application.

MANUFACTURE

Virtually all Crest Pumps components are manufactured in house. Our flexible production system means that we can offer fast deliveries—without compromising quality. Quick turnaround of pumps and spare parts can be vital in order to keep production lines running and we have pioneered fast-track production and administration systems to develop a significantly speedy service. It can make all the difference.

QUALITY

Our commitment to quality is assured through a vigorous inspection programme maintained through all manufacturing processes which guarantees the reliability of our products. Each pump is performance tested to exact customer specifications prior to despatch. Crest pumps are designed to give you many years of efficient and trouble-free service.

Crest Pumps Ltd 163 Stourvale Road

Southbourne Bournemouth

BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

WHY CREST PUMPS?

All plastic parts on Crest Pumps are machined from solid blocks giving:

Exceptionally rugged & robust construction

Flexible manufacturing

Choice of materials including: Polypropylene, PVC, PVDF, Polyethylene & PTFE

Customer choice of flange specifications

As a large range of raw materials are kept in stock so we offer:

Fast lead times on pumps & spare parts

Crest Pumps are manufactured in the UK which means we give: Quick turn round of quotations backed up by over 25 years experience of handling arduous & difficult liquids

Excellent after-sales service



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

PP RANGE Close Coupled Chemical Pumps

In common with all Crest pumps the PP range are machined from solid plastic making an extremely rugged and robust unit. Available in Polypropylene, PVC, PVDF and PTFE with all mechanical seal options this range is ideal for installation where space is of a premium.

PP32

PP25

PP27

PP22

PP17

0 5

Capacity - m3/hr 20 25 30

5

10

15

20

25

Hea

d -

Met

res

Performance at 2900 rpm

10 15

PPM RANGE Multistage Chemical Pumps

Based on the PP range but with either 2 or 3 stages the PPM offer significantly increased discharge pressures. Available in Polypropylene, PVC, PVDF and PTFE with all mechanical seal options PPM pumps are ideally suited for low flow / high head applications.


Capacity - m3/hr

Hea

d -

Met

res

0

10

20

30

40

50

60

0 5 10 15 20 25

A solid steel shell means that there are no external stresses on the machined plastic parts. Available in Polypropylene, PVC, PVDF and PTFE with all mechanical seal options. The ECC range are exceptionally rugged and robust offering a lifetime of trouble free performance.


Capacity - m3/hr

Hea

d -

Met

res

25

35

50

80

110 130 70 36 24

ECC RANGE Close Coupled Chemical Pumps



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

PPC(B) RANGE Close & Long Coupled Pumps

Our original range of large capacity pumps are still available as replacement pumps or for specific applications. All standard material and mechanical seal options are available and these pumps can often be `tailor made’ to replace other manufacturers units without altering pipework.


50 20 10

30

100

10

20

40

50

Hea

d -

Met

res

Capacity — m3/hr

EBB RANGE Long Coupled Pumps (ISO2858)

Designed to International dimensional standard ISO 2858 these pumps are the long coupled version of our ECC range. Available with 2 pole motors (see ECC curve) or 4 pole motors (as detailed above). All usual material and mechanical seal options are available.


160 240 65 55 35 18 12

6

9

13

20

35

Hea

d -

Met

res

Capacity — m3/hr

135

SPM RANGE Stainless Steel Pumps

Manufactured in 316 stainless steel the SPM range is available with single, two or three stages and covers the same range as our plastic PPM pumps. All standard mechanical seal combinations are utilised.


Hea

d -

Met

res

Capacity - m3/hr

0

10

20

30

40

50

60

0 5 10 15 20 25



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

VSL RANGE Vertical Sealless Pumps

VSL pumps have no mechanical seals or immersed bearings so are capable of running dry indefinitely. Manufactured in polypropylene, PVC or PVDF these pumps are ideal for `fit and forget’ applications such as sump emptying or fume scrubber recirculation.


Hea

d -

Met

res

Capacity - m3/hr

0 10 20 30 40 50 60

0

10

20

30

40

VSX RANGE Vertical Sealless Pumps

Our original vertical sealless pumps the VSX can also run dry without risk of damage. Heavy duty construction includes two bearings which are protected from the liquid and fumes by a rubber V-seal.


Hea

d -

Met

res

Capacity - m3/hr

0 10 20 30 40 50 60

0

10

20

30

40

CSS RANGE Vertical Cantilever Pumps

Another sealless pump with the ability to run dry without damage the CSS range is cantilever design so is available in either 500 or 750 mm column lengths. Available in Polypropylene, PVC and PVDF (some sizes).


Hea

d -

Met

res

Capacity - m3/hr

10 20 30 40 50 60 0

10

20

30

40

Crest Pumps



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

PPS RANGE Vertical Long Shaft Pumps

PPS pumps are available from 1 to 4.5 metres long. They have PTFE & ceramic bearings which can be either product or externally lubricated. Available in Polypropylene, PVC or PVDF (some sizes).


Capacity - m3/hr

0

10

20

30

0 25 50 75

FL VALVES Non-Return Flap Valves & Strainers

A range of non-return valves and strainers designed specifically for use with our vertical pumps but with uses throughout industry in corrosive environments. As they are flap valves the FL range operates with a minimum of pressure loss when compared to similar ball-type valves. Available in two versions: NRV - as a simple non-return suction or discharge valve or; NRVS - incorporating a suction strainer. Sizes: 1”, 1.25”, 1.5”, 2” & 2.5” BSP Materials: Polypropylene, PVC & PVDF

CVS RANGE Vertical Metallic Pumps

Manufactured in 316 stainless steel CVS pumps are available up to 4.5 m long (intermediate stages of up to 1.5 m). Fitted with PTFE steady bearings which may be product or externally lubricated.


Capacity - m3/hr

0

10

20

30

0 10 20 40 30

Head

- M

etre

s He

ad -

Met

res

PRIMING CHAMBERS For Suction Lifts up to 4 Metres

All Crest horizontal pumps may be fitted with suction priming chambers which will achieve suction lifts up to 4 metres. The chambers are manufactured from the same materials as the pump wet end (polypropylene, PVC, PVDF etc.) for maximum corrosion resistance. For ease of installation in-line suction and discharge ports are provided and an anti-syphon device is fitted as standard. The fitting of priming chambers make Crest pumps ideal for applications such as tanker offloading, sump emptying, effluent treatment plants etc.

SS24 SEALING SYSTEM Sealing System for Double Mechanical Seals

For applications where double mechanical seals are essential the SS24 sealing system provides a safe and simple method for pressurisation up to 8 bar. Operating on the well-proven thermosyphon principle the SS24 is easy to install and maintain and provides automatic protection for the pump and mechanical seals. The SS24 is a fully integrated system consisting of 316 stainless steel vessel, sight glass, pressure switch, pressure gauge and quick release air-line adaptor. A foot pump is available as an optional extra.

CREST PSP1 Dry Run Protection Monitor

Running centrifugal pumps dry (without liquid) often causes severe damage resulting in expensive repairs and downtime. The Crest PSP1 monitor provides permanent protection against pump dry running by electronic monitoring of the electric motor- no intrusive probes are required making the PSP1 ideal for use on pumps handling aggressive and corrosive liquids. The PSP1 is simple to install and is totally reliable and maintenance free. The monitor is normally mounted in the starter equipment cubicle.



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

CHEMICAL TRANSFER

Chemical transfer is the standard application for Crest pumps. As they are machined from solid blocks of plastic they are extremely rugged and robust capable of standing up to many years use in arduous conditions. The three pumps illustrated are long coupled PPB20E units handling 36% hydrochloric acid at a duty of 10 m3/hr with a 30 metre discharge head. The wet ends are made from polypropylene and they are fitted with external PTFE bellows mechanical seals. The pumps are driven by 7.5kw flameproof electric motors. The pumps were originally installed in March 1983.

POLLUTION CONTROL

Both vertical and horizontal Crest pumps are used extensively in the environmental control and effluent treatment industries. Vertical sealless pumps in particular are utilised as their ability to run dry without risk of damage make them ideal for `fit and forget’ installations. The pumps shown are PP32 models handling 10% caustic soda solution neutralised with acetic acid. The duty point. They are of polypropylene construction and are fitted with single internal mechanical seals which have stationary seats and rotating faces made from silicon carbide.

RESEARCH & DEVELOPMENT

As Crest pumps are so rugged in construction they are ideal for use in environments where there is no certainty as to the chemical make-up or concentrations of the liquids being pumped. Illustrated are two VSX 20 pumps manufactured in PVC for use on a mobile pilot plant designed to monitor and control air pollution in a plating plant. As VSX pumps are sealless in construction there is no danger of damage in the event of dry running. As this is a pilot plant the only maintenance required is to regularly change standard ball races.



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

SELF PRIMING EMERGENCY SPILL PUMP

A major manufacturer of industrial chemicals required a pump to handle hydroflouric acid for emergency use only in the case of a road tanker accident. We provided the solution with an all PTFE pump fitted with a priming chamber (PTFE lined) and driven by a diesel engine. The whole assembly was mounted on a stainless steel carry frame which was easily transported by 2 men. In this situation the pump was going to run dry so we provided a sacrificial seal component which could be easily and inexpensively replaced.

V-BELT DRIVE & SPECIAL FLANGES

This is one of our standard PPB range pumps which was fitted with an overhead V-belt drive in order to fit into a very restricted access area. The suction and discharge flanges were altered from the standard so that the Crest pump could replace an alternative manufacturer without having to alter any pipework. As our pumps are machined from solid we are not constrained by thin walled mouldings. Since we began making pumps in 1973 we have replaced many pumps in this way so saving our customers considerable time and expense by not having to change existing pipework.

PUMP PACKAGED SYSTEMS

One of our customers had a requirement for a pressurised water system, however the water needed to be ultra-pure for cooling a laser. Our solution was to provide two of our PPM 3 stage pumps (duty / standby) fitted with hard faced silicon carbide mechanical seals, pressure switch controlled and mounted on a common skid and complete with pressure sphere, control panel, pipework and valves.

SPECIAL APPLICATIONS

In many instances a standard pump design is not necessarily suitable. In these cases we can design and manufacture a pump system to match the parameters of the application.

Listed below are just a few of the many `specials’ we have designed for unique applications. Please do not hesitate to ask if you have a problem which does not seem to fit a standard pump design.



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

CONVERSION DATA

1 0.278 16.66 1000 0.000278 0.01667 3.666 4.40 0.01635 0.982

3.60 1 60 3600 0.001 0.0599 13.2 15.83 0.0588 3.528

0.060 0.0167 1 60 1.666x10-5 0.001 0.2199 0.254 0.000983 0.059

0.001 0.000278 0.01657 1 2.78x10-7 1.666x10-5 0.00366 0.00439 1.67x10-1 0.00093

3600 1000 60000 3500000 1 50 13198 15300 59 3532

60 16.57 1000 60000 0.01657 1 220 254 0.982 58.93

0.2728 0.07577 4.545 272.7 0.0000757 0.00454 1 1.2 0.00446 0.268

0.227 0.0632 3.785 227 0.000053 0.00378 0.833 1 0.00372 0.223

61.2 17 1020 61200 0.017 1.018 224 269 1 50

1.02 0.283 17 1017 0.000283 0.0169 3.73 4.48 0.0167 1

M3/hr

l/sec l/min l/hr M3/sec M3/min UK gpm US gpm UK ton/m

UK ton/hr

Water

1 m3/hr

1 l/sec

1 l/min

1 l/hour

1 m3/sec

1 m3/min

1 UK gpm

1 US gpm

1 UK ton/min

1 UK ton/hr

CAPACITY AND FLOW RATE

1 0.101 0.3345 0.01 0.0101 0.145 0.00987 7.5 7.5 0.2953

9.81 1 3.281 0.098 0.01 1.422 0.0968 73.55 73.55 2.896

2.989 0.3043 1 0.02989 0.0305 0.434 0.0295 22.4 22.42 08827

100 10.2 33.455 1 1.0197 14.504 0987 750 750 29.63

98.07 10 32.809 0.981 1 14.223 0.968 735 753.6 28.959

6.895 0.703 2.307 0.069 0.07 1 0.068 51.7 51.7 2.036

101.3 10.34 33.9 1.0132 1.0332 14.696 1 780 780 29.92

0.133 0.0136 0.0446 0.00133 0.001359 0.01933 0.001315 1 1 0.03937

0.133 0.0136 0.0466 1.33 x 10-3 0.001359 0.01933 0.001315 1 1 0.03937

3.386 0.345 1.133 0.0338 0.0345 0.431 0.0334 25.4 25.4 1

kPa (kn/m2)

m

ft

bar Kp/cm2

Kpf/cm2

Lbf/in2

(psi)

atmos torr UK ton/m

UK ton/hr

Water

1 kpa

1 m

1 ft

1 bar

1 kgf/cm2

1 psi

1 atmos

1 torr

1 mm

1 inch

HEAD AND PRESSURE

Mercury (hg)

Water

Mercury



BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577



Crest Pumps

Crest Pumps

Crest Pumps


Southbourne Bournemouth BH6 5HQ

Tel: 01202 425000 Fax: 01202 425577

www.crestpumps.co.uk E-mail: [email protected]

Corrosion Resistant Pumpscms.esi.info/Media/documents/Crest_corrosionresist_ML.pdf · 2016. 6....

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