E QUIPMENT NEWS

sys tems from excess ive pres- sure, w h i c h can o c c u r should d ischarge p ip ing be c losed or obs t ruc ted .

Although not in tended for long-term dry rtmning, the SGL's non-meta l l i c vanes p r e v e n t excess ive w e a r du r ing occa- sional dry running required by pr iming and line str ipping.

Contact: Blackmer, 1809 Century Avenue, Grand Rapids, MI 49509, USA. Tel: +1 616 241 1611; Fax: +1 616 241 3752.

High vo lume p u m p i n g capabil i t ies

The E2 vers ion of the 24 Series of ro tary lobe p u m p s from ITT J a b s c o offers h igh v o l u m e p u m p i n g wi th exce l l en t stan- dards of hygiene. This t op of the range p u m p features 150 mm d iame te r po r t s and offers f low mtcs of up to 2000 l / rain and a m a x i m u m pressure of 12 bar.

With recen t app l i ca t ions in the dairy indus t ry for p u m p i n g cheese curds and yoghur t , the E2 p u m p can bc readily c l eaned in -p lace (CIP) by us ing the p u m p i tself to c i r cu l a t e c leaning agents or by using an in tegra ted CIP sys tem.A sealed ro tor sys tem preven ts p r o d u c t get t ing into the sp l ine area. With no poss ibi l i ty of bac te r ia b r eed ing in this par t of the p u m p , it does not need to be r emoved for cleaning.

In keep ing wi th a n u m b e r of European and in te rna t iona l hygiene standards, all compo- n e n t s in c o n t a c t w i t h t he p u m p e d fluid arc manufac tu red f rom 316 grade stainless steel.

The E2 does not genera te high shear forces wi th in the p u m p wh ich could irreversibly damage shear sensit ive product . It can readi ly p u m p s f lu ids which conta in soft solids up to 27 m m in size. The gen t l e p u m p i n g act ion will not reduce the viscosi ty of the produc t .

Use of the E2 p u m p is not

res t r i c ted to dai ry and o t h e r hygienic app l i ca t ions .The iner t s ta in less s tee l c o n s t r u c t i o n enables it to be used in a w ide range of t ransfer dut ies in o the r p roces s industr ies .

Contact: ITT labsco, Bingley Road, Hoddesdon, Hertford- shire ENl l OBU, UK. Tel: +44 1992 450145; Fax: +44 1992 467 132.

Low-cost internal gear p u m p launched

. . . . . . . . . . i m l n

Liquif lo has i n t r o d u c e d the Vantage se r ies of pos i t ive d i s p l a c e m e n t ro t a ry p u m p s offer ing high levels of pulse-less flow. Vantage p u m p s feature a compac t , e conomica l configu- ra t ion and c o m p l e m e n t Liqui f lo ' s w i d e range of Rotogear pumps . Liquiflo can n o w prov ide posi t ive displace- m e n t gear p u m p s cover ing a full range of f low rates from 0.01 g p m to 1000 gpm.

Vantage p u m p s fea tu re a wea r ad jus tmen t sys tem w h i c h c o m p e n s a t e s for wea r on the front of the ro tor by adjust ing the axial pos i t ion of the rotor. This ensures cons tan t perfor- mance even after cons ide rab le w e a r .

Contact: Liquiflo Equipment Company, 443 North Ave., Garwood, NJ 07027, USA. Tel: +1 909 518 0666; Fax: +1 908 518 184; www.liquiflo.com.

[ ] End-suct ion p u m p s for high flows

T h o m p s o n s , Kelly & Lcwis ' s Type MT and Type PBAN are an ex tens ion of TKL's KL-ISO and Hydro-Titan end-suct ion p u m p ranges , o f fe r ing la rger f l ow rates of up to 400 l/s and heads to 165 m.

Des igned to handle clean, dir ty and abrasive water, the MT (Mighty-Ti tan) s ingle s tage

p u m p is the wel l -es tab l i shed cho ice for the w a t c r industry, whi ls t the PBAN is also sui table for the stock, pu lp and p a p e r industr ies.

T h r o u g h long e x p e r i e n c e ga ined in these indust r ies TKL has used the best in hydraul ic des ign to c rea te p u m p s that are low on m a i n t e n a n c e , h igh ly resis tant to wea r and tear and bo th c o m p a c t and robust .

In the Type PBAN p u m p range, i n t e r c h a n g e a b i l i t y o f wear ing par ts is ach ieved wi th just t w o f rame sizes w h i c h cover all six casing sizes from 100 to 300 m m discharge diam- eter. A m i n i m u m n u m b e r of par ts is therefore requi red for s tock inventory.

The open - type impe l l e r of the PBAN pumps , can handle up to six p e r cen t cons i s t ency ma te r i a l wh i l s t o p e r a t i n g at o p t i m u m eff ic iency. T h r e e e x t e r n a l s c r e w s a l low for easy ad jus tment of the clear- ancc b e t w e e n the r enewab le front w e a r i n g p la te and the impeller .

Some c o m m o n benef i ts of the two p u m p types are:

1. Main tenance t ime is effec- t ively r e d u c e d b e c a u s e the back pull-out bear ing b racke t assembly al lows for very easy access. 2.The c o m p l e t e rota t ing c l e m e n t can be r e m o v e d wi thou t d i s turb ing the suc t ion a n d / o r deliver): p i p e w o r k and driver.

Posi t ive a l i g n m e n t u n d e r the mos t d e m a n d i n g work ing cond i t ions is assured by the in tegrat ion of the two front feet into the p u m p casing. A third large de tachab le foot unde r the bear ing hous ing prov ides extra work ing stability.

Similarly, u n e v e n loads or sudden shock loads are kep t to a min imum th rough rigidly and p e r m a n e n t l y f ixed thrust bearings.

P ipework layout is simpli- fied and be t t e r res is tance to p i p e r e a c t i o n s has b e e n a c h i e v e d t h r o u g h the t o p c e n t r e l i n e ve r t i ca l d i s cha rge wh ich prov ides for self-venting

WORLD PUMPS JANUARY 1998

EQUIPMENT NEWS

The AR metering pump from Michael Smith Engineers.

and al lows for single d i rec t ion of rotat ion.

The s tuff ing b o x can be f i t ted wi th mechan ica l seals o r the spl i t - type pack ing gland is easily r emoved to enable easy re-packing.

The Type MT and the Type PBAN from TKL are the ideal large f low end suc t ion p u m p s and c o m e wi th TKL's guaran tee of quali ty serv ice and after sales suppor t .

Contact: Thompson, Kelly & Lewis Pty Ltd, PO Box 160, Springvale, Victoria 3171, Australia. Tel: +61 3 9562 0744.

[ ] F lex ib le m e t e r i n g p u m p s cope wi th tough f lu ids

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P r o c e s s e s r e q u i r i n g small vo lumes of l iquids to be dosed accura te ly and r epea ted ly are idea l for the AR range of mechan ica l ly f l exed d i aph ragm type m e t e r i n g pumps .

R e c e n t l y i n t r o d u c e d by Michael Smith Engineers, the

AR range i n c o r p o r a t e s six mode l s cover ing capaci t ies up to 15 l /h r at m a x i m u m discharge p ressures of b e t w e e n 5 and 12 bar.

T h e s e p u m p s have an ad ju s t ab l e s t r oke l eng th o f b e t w e e n 20 and 100% and a s t roke f r equency ranging f rom 5 to 125 s t rokes pe r minu te and t h e r e f o r e a t h e o r e t i c a l turn- d o w n of 125 to 1 is possible.

The p u m p mo to r s incorpo- ra te an a c c u m u l a t o r w h i c h s to res e n e r g y on the back s t roke and releases energy on the forward mot ion. This addi- t ional thrus t force genera ted by the m o t o r improves eff ic iency and a l lows the use of m o t o r s w i t h sma l l e r w a t t a g e than prev ious ly poss ib le for compa- rable duties.

In the even t of ovcrprcssure or c losed valve cond i t ion the p u m p s are a u t o m a t i c a l l y swi t ched off and the status of an internal con tac t is swi t ched so that an alarm can be raised. This f ea tu re p r o t e c t s the p u m p s f rom m e c h a n i c a l o r e l ec t r i ca l d a m a g e and elimi- nates the need for rel ief valve p ro tec t ion .

AR p u m p s are IP65 ra ted so they can ope ra te outs ide and in w e t o r d a m p loca t ions . The p u m p heads are des igned to be ro ta ted th rough 90 ° so they can be m o u n t e d h o r i z o n t a l l y o r vert ical ly to suit the applica- tion. Also, the base is s ized to enable the p u m p s to be f ixed di rec t ly on to a w a t e r meter.

Contact: Michael Smith Engineers Ltd, Oaks Road, Woking, Surrey GU21 1PH, UK. Tel: +44 1483 771871; Fax: +44 1483 723110.

Q U n m a t c h a b l e f looded-suc t ion p u m p intro- d u c e d

Smith & Loveless has intro- d u c e d the 6D5 f looded-suc t ion w a s t e w a t e r p u m p , the la tes t a d d i t i o n in a long l ine of

qualit T, factory-buil t p u m p s . T h e 6D5 p u m p can handle heads up to 370 ft TDH, f lows up to 1800 g p m and can pass a 3 inch d i ame te r solid.

Benefi ts inc lude a highly- e f fec t ive , d o u b l e m e c h a n i c a l seal; c lose -coupled p u m p and m o t o r wi th h e a w duty stainless s teel shaft for l onge r life; a c o m p a c t des ign for easy main- tenance; dual curva ture volute for h igher eff iciency and longer bear ing and seal life; and a full s h r o u d c u s t o m - t r i m m e d impe l l e r to p reven t solids and str ingy mater ia ls fi 'om accumu- lating a round the shaft.

Contact: Smith & Loveless, Inc., 14040 Santa Fe Trail Drive, Lenexa, KS 66215-1284, USA. E-mail: answers@smithand loveless.com. Tel: +1 913 888 5201; Fax: +1 913 888 2173.

D Hydraul ic vari- able speed dr ive can ha lve energy r e q u i r e m e n t

i i

Around 25% of the e lect r ica l e n e r g y c o n s u m e d by the p rocess indus t ry are used for p o w e r i n g p u m p s and fans. By op t imiz ing f low cont ro l , the c o n s u m p t i o n of e lec t r ic i ty and opera t ing costs can be r educed substantially, as can the envi- ronmen ta l loading. This is the claim of Control Drive Sweden AB in Karlstad, Sweden.

The c o m p a n y has devel- o p e d a variable speed dr ive for e q u i p m e n t such as p u m p s and fans that r educes the energy r e q u i r e m e n t by 30 - 60%, accord ing to the manufacturer . The pay-off t ime for the invest- men t is e s t ima ted to be 6 - 24 months .

The var iab le s p e e d dr ive takes up little room thanks to its c o m p a c t size, and is r e p o r t e d to be vet T reliable. It can be used for speed con t ro l in mos t industr ial app l ica t ions using AC-powcred systems such as pumps , fans, b lower s and w o r m convevor s .The dr ive can

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