Drain Taps, Gland Cocks, De-Aerators and Air Vents · Drain Taps, Gland Cocks, De-Aerators and Air Vents ... Square Size mm 8.7 9.5 10.3 12.7 14.3 15.9 19.1 22 ... Nominal Size in

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Drain Taps,Gland Cocks,

De-Aerators and Air Vents

SECTION11a

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Contents

Drain Taps, Gland Cocks, De-Aerators and Air Vents

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Contents PageFigure Number Index 2Malleable Iron Levers 2Gland Cocks Data Sheet 3De-Aerator Data Sheets 4-5Air Vent Data Sheet 6Bronze Draining Taps 7

Numerical Index

Fig No Page81HU 3770 4771 5775 6370 7371 7

In this catalogue we have endeavoured to make the information as accurate aspossible, and we cannot accept any responsibility should it be found that in anyrespect the information is inaccurate or incomplete or becomes so as a result offurther developments.

2

Malleable Iron LeversMI Lever No Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9Square Size mm 8.7 9.5 10.3 12.7 14.3 15.9 19.1 22.2 25.4

Malleable Iron Levers - ContinuedMI Lever No D1 D2 D3 D31/2 D41/2 D5 D6 D7 D71/2 D8Square Size mm 7.9 10.3 11.1 13.5 15.9 17.5 19.1 23.8 26.2 31.8

Operation of Three-way Cocks with L Port

Operation of Three-way Cocks with T Port

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0 20 40 60 80 100 120140Temperature ˚C

12

10

8

6

2

0

Pre

ssur

e ba

r

4

Fig. 81HU

Bronze Hose Union Gland CockPN10

Material Specification

Specification

Component Material BS EN ASTM

Gland (1/2” to 1”) Brass 12165 CW617N B124 Alloy 2

Gland (11/4” to 2”) Bronze 1982 CC491K B62

Gland Packing Asbestos Free

Plug Bronze 1982 CC491K B62

Cap and Tail Brass 12164 CW614N B455-385

Body Bronze 1982 CC491K B62

Dimensions

Nominal Size in 1/4 3/8 1/2 3/4 1 11/4 11/2A mm 95 102 93 117 145 184 203

B mm 47 54 54 64 79 90 100

MI Lever No Y1 Y2 D2 D31/2 D41/2 Y6 Y7

Weight kg 0.32 0.35 0.38 0.67 1.2 1.5 2.5

Malleable Iron Levers

MI Lever No Y1 Y2 D2 D31/2 D41/2 Y6 Y7

Square Size mm 8.7 9.5 10.3 13.5 15.9 15.9 19.1

Pressure/Temperature Rating10 bar 0 to 120ºC

Test Pressures (Hydraulic)Body: 20 bar

Specification90º operationSizes 1/2” to 1” supplied complete withcap and strap. Other sizes availablewith cap and chain on request.Plugs have square heads with a slot to indicate plug position.Malleable iron levers availableon request.Malleable iron lever can be pinned tothe plug head at extra chargeThreads to BS 21 (ISO7 RP)Fig 81HU Gland Cocks are not suitablefor gas service.

A

B

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0 20 40 60 80 100 120140Temperature ˚C

12

10

8

6

2

0

Pre

ssur

e ba

r

4

Fig. 770

Brass De-AeratorPN10

Material Specification

Specification

Component Material BS EN ASTM

Air Vent Brass 12165 CW617N B124 Alloy 2

Cover Brass 12165 CW617N B124 Alloy 2

Vent Mechanism Body Brass 12165 CW617N B124 Alloy 2

Vent Mechanism Polypropylene

Separator Stainless Steel AISI 304

Seals EPDM

Body Brass 12165 CW617N B124 Alloy 2

Drain Plug Brass 12165 CW617N B124 Alloy 2

Dimensions

Nominal Size in 3/4 1 11/4 11/2 2

A mm 110 110 124 124 130

B mm 146 146 166 166 160

C mm 59 59 59 59 65

Weight kg 1.7 1.7 2.2 2.2 2.5

Flow Rate at 1.2 m/s

Nominal Size in 3/4 1 11/4 11/2 2

Quantity l/s 0.44 0.70 1.22 1.65 2.65

Quantities based on BS 1387 Medium grade pipe.

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Pressure / Temperature Rating10 bar 0 to 120ºC

Test Pressure (Hydraulic)Body 10 bar

SpecificationBrass body and coverPolypropylene floatEPDM sealsStainless steel separatorDrain plugEnds threaded internally to BS 21 parallel (ISO 7)

Flow VelocityRecommended maximum velocity offlow 1.2 m/s

A

B

C

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0 20 40 60 80 100 120140Temperature ˚C

12

10

8

6

2

0

Pre

ssur

e ba

r

4

Fig. 771

Steel De-AeratorPN10

Material Specification

Specification

Component Material BS EN ASTM

Air Vent Brass 12165 CW617N B124 Alloy 2

Cover Brass 12165 CW617N B124 Alloy 2

Vent Mechanism Body Brass 12165 CW617N B124 Alloy 2

Vent Mechanism Polypropylene

Separator Stainless Steel AISI 304

Seals EPDM

Body Steel

Epoxy Coated

Drain Valve DZR 12165 CW602N

Dimensions

Nominal Size in 50 65 80 100 125 150

A mm 350 350 466 470 635 635

B mm 374 374 435 435 545 545

C mm 205 205 233 233 303 303

D mm 169 169 219 219 324 324

E - BSP in 1 1 1 1 1 1

Volume litre 7 7 18 18 52 52

Weight kg 16 16.5 29 31 49 54

Flow Rate at 1.5 m/s

Nominal Size in 50 65 80 100 125 150

Flow Rate l/s 3.3 5.5 7.6 13.0 19.9 28.4

Flow Rate based on BS 1387 Medium grade pipe.

A

E

D

B

C

Pressure / Temperature Rating10 bar 0 to 120ºC

Test Pressure (Hydraulic)Body 10 bar

SpecificationCarbon steel body epoxy coatedexternallyDrain valve to remove debrisManual air vent to release air duringsystem fillingBrass air ventPolypropylene FloatEPDM sealsStainless steel separatorPreformed insulation jacket availableFlanges to BS 4504 PN16

Flow VelocityRecommended maximum velocity of flow 1.5 m/s

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6

0 20 40 60 80 100 120 140Temperature ˚C

12

10

8

6

2

0

Pre

ssur

e ba

r

4

Max Discharge Pressure

Fig 775

Automatic Air VentPN10

Dimensions

Nominal Size mm 3/8 1/2 3/4 1

A mm 48 48 48 48

B mm 54.5 54.5 56 56

C mm 11.5 11.5 12.5 12.5

D mm 89.5 89.5 92 92

Weight kg 0.18 0.18 0.25 0.25

With Non Return Valve

C mm 28 28 - -

D mm 106 106 - -

Weight kg 0.23 0.23 - -

Material Specification

Specification

Component Material BS EN

Body Brass 12165 CW617N

Cover Brass 12165 CW617N

Float Polypropylene

Seals EPDM

Anti Vacuum Cap Brass 12165 CW617N

Non Return Valve Brass 12165 CW617N

A

D

D

Pressure / Temperature Rating10 bar at 120ºC

Maximum Discharge Pressure2.5 bar

SpecificationBrass body and cover Polypropylene floatEPDM sealsWRAS approved productAnti vacuum capBSP parallel threadNon return valve option available insizes 3/8” and 1/2”Isolation valve option available in sizes3/4” and 1”

NoteThe non return valve base allows theautomatic air vent to be removedwithout draining the system

C

C

B

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Pressure/Temperature RatingSuitable for pressures of 13 bar up toa maximum temperature of 120°C

Fig. 370 - 371

Bronze Draining Taps

7

Fig. 370 Bronze Draining Tap Fig. 371 Bronze Draining Tap -Lockshield Pattern

A

C

Fig. 370

Fig. 371

B

A

C

B

Dimensions

Nominal Size in 1/2 3/4 1

A (370) mm 57 73 79

A (371) mm 59 75 83

B mm 13 16 19

C mm 10 10 11

Lockshield Key Fig No 391 391 393

Ref 2 3 6

Weight kg 0.22 0.36 0.68

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