type of valves in process piping

DONKIN OUTSIDE SCREW UNIVERSALWEDGE GATE VALVE

562

The Series 562 is an external screw, double faced, solid wedge gate valve, designed for the isolationand control of contaminated industrial gases such as coke oven gas and media such as flushingliquor, effluent and other aggressive liquids.

Options:

• Size range: 80mm to 600mm.*

• Optional tapped and plugged bossfor steam cleaning if required.

• Size range 80mm to 300mm only.Available in cast steel.

Features:

• Clear bore for under pressure drillingapplications.

• Adjustable packed gland.

• Hard faced wedge seats.

• Asbestos free jointing.

The designs, materials and specifications shown are subject to change without notice due to our continuing programme ofproduct development.

AVK UK Limited DS121107

DONKIN OUTSIDE SCREW UNIVERSALWEDGE GATE VALVE

562

SERVICE CONDITIONS

Maximum working 7 Bar (100 psig).80mm - 300mm pressure.2 Bar (29 psig).400mm - 600mm.

Temperature range: -10°C to 250°C.

APPLICABLE STANDARDS

BS 5150, BS EN12266.

MATERIALS OF CONSTRUCTION

No. DESCRIPTION MATERIAL1 Body Cast iron BS EN 1561

Grade 250.2 Bonnet Cast iron BS EN 1561

Grade 250.3 Wedge Cast iron BS EN 1561

Grade 250.4 Gland Carbon steel BS970 –

220M07.5 Yoke Cast iron BS EN 1561

Grade 250.6 Bush Cast iron BS EN 1561

Grade 250.7 Handwheel Aluminium LM6.8 Spindle Carbon steel BS 970 –

220M07 orStainless steel BS 970 –431S29.

9 Spindle Nut SG iron BS EN 1563Grade420/12.

10 Fasteners Metric to BS 4190 Grade4.6.

11 Gland Packing PTFE Acrylic fibreyarn.

12 Body/Bonnet Gasket Asbestos free fibre.13 Bonnet/Yoke Joint Exfoliated reinforced

graphite.

* = details available on request

DIMENSIONS (mm) & WEIGHTS

Size A B C WeightOpen Closed (kg)

80 203 550 444 250 28100 229 597 470 250 34150 267 892 714 330 72200 292 1029 794 330 103250 330 1392 1104 400 204300 356 1504 1171 400 272400 406 * * * 301450 432 * * * 340500 457 * * * 470600 508 * * * 745

Northampton Office8 Rushmills, Northampton,NN4 7YB England, UK.Tel.: +44 (0) 1604 601188Fax.: +44 (0) 1604 604818

Chesterfield OfficeColliery Close, Ireland Ind. Est., Staveley,Chesterfield, S43 3FH, England, UK.Tel.: +44 (0) 1246 479100Fax.: +44 (0) 1246 479200AVK UK Limited www.avkuk.co.uk