Valve body design prevents contamination

a new high

performance

metal

seated ball valve. In the new design the sealing

mechanism

is com-

pletely enclosed witbin a cartridge, which means that valve maintenance is simpler and faster. In

the

new

MT

Model

sealing mechanism/cartridge bly is machined

the

assem-

to perfectly march

the ball and trunnions,

and hence

fills the whole inner body cavity. This

is the major

benefit

of the

design, because the eliminarion

of

retention areas means that rhe valve body

is

unlikely

clogged-up

The springs are located external to

body and spiral wound body seal

the pumped fluid and the option of

improves

the valve’s sealing

taps for application that require either

formance

during

flushing

or venting

Finally,

means

is available.

the seal can be used in a

variety of pumps,

regardless of bolr

diameter. maximum

temperature is 250°C

operating

for the standard although

series

in the presence

maximum standard

up

to 370°C.

prrsbure

range

seal is vacuum

The standard be

diameters 175

to

ranging

mm,

but

up to 250

of the

to 27 bar.

cartridge

manufactured

The

seal can fit

with

capabilities

of

mm.

Flowserve Corporation, Division, Durametallic

Fluid Sealing UK, Unit 138,

of the

process. The MT design is unique,

as it

to

be

retracted

by

mechanical

leaks and/or corrosion.

from

3 16 stainless steel. It can withstand up to 230°C and has

a pressure

rating

of 20 - 51 bar.

Therefore,

it is ideally mired for use

in cylinders or electric motors.

Another

benefit of this design is

rhar the valve requires rnaintmance,

very little

which saves operators

both time and money. The

srandard

valve is double-

seated, trunnion-mounted Contact: DeZURIK, 750 Riverside

lead ro

and avail-

able in a range of sizes. In addition,

Avenue North, Sartell, MN 56377, USA.

various

Tel: +l 320 259 2000; Fax: +l 320 259

orated

inro

from

double

2227

options

capability

Valve body design prevents contamination

can

the

be incorp-

design,

bluck

ranging

and

bleed

to bonnet extension

and

sealing injection system. The MT ball valve is suitable for industrial

applications

contamination tenance

and

where nonquick

main-

are important.

Contact: M Ball, Part d’activite du

United Trading Estate, Old Trafford, Manchester, Ml6

prevents

and its body is manufactured

shaft

from 25 mm to

in rum

devices that can potenrially

of a cooling system it can operate at temperatures

This

conramination

of sizes, from 50 mm co 300 mm

temperacures

The

become

does not require the seat assemblies

The valve is available in a range

its universal slotred gland

damaged. potential per-

operation.

to

and the valve seating

ORJ, UK. Tel: +44 161

869 1200; Fax: +44 161 869 1235

M Ball, a specialist

manufacturer

of ball valves that affiliated

to the

MG Fetterolf group, has launched

Rebauchet Bf? 71. 73420 Mery France. Tel: +33 479 35 7800; Fax: +33 479 35 7820

Spiral wound seal improves valving DeZURIK, high

which

manufacturers

performance

actuators,

has

metal seated,

valves

launched

and

a new

full port ball valve

that can be used for shut-off

and

control

and

in scaling,

high pressure

plating

drop applications.

The valve’s floating ball and large stem

design

directional flow rates,

@

ensures shut-off

a tight and

bihigh

while the split offset

Sealing Technology No. 62