Non Return and Flap Valves

MISSIONRUBBER UK

The Or i g i na l and Best - Rubber F l e x i b l e Coup l i ngs and Bushes

NON RETURN& FLAP VALVES

MISSIONRUBBER UK

FLAP VALVESThe principle applications for flap valves are for surface water drainage associated with river, estuary and sea water outfalls to prevent backflow into the sewer and for final effluent outfalls from wastewater treatment works to prevent flood damage within the works.

NON-RETURN VALVESNon return valves or backwater valves are used within sewerage and drainage systems to eliminate the risk of flood damage by the backflow of sewage or flood water into properties through low level entries such as low level drain gullies, toilets and washing machine outlets. The Environment Agency in their publication on damage limitation for properties at risk from flooding and the Government guidance note “Preparing for Floods” both recommend the installation of non-return valves (anti-flooding devices) on all such drains and sewers.

The Building Regulations 2000, Approved Document H, recommends the installation of non-return valves on drains from basements in low risk areas and on all drains in areas with a high risk of flooding or sewer surcharge.

These valves are also used in commercial and industrial application where non-pressure flow control is required (e.g. fish farming)

MATERIALS

FLAP VALVESBody & flap - Glass reinforced plastic using a isophtalic polyester resin with surface isophtalic gel coat Hinge - Self lubricating Ertacetal plasticSeal - Ethylene Propylene Diene Monomer (EPDM) to BS EN 681-1 Optional nitrile (NBR) seal availableFittings - Grade 1.4401 (316) austenitic stainless Steel to BS EN 10088-2

NON-RETURN VALVESREDI (DN100 to 600)

Body & Flap - PVCuSeal - Ethylene Propylene Diene Monomer (EPDM) to BS EN 681-1

Norham (DN250 to 500) Body & flap - Glass reinforced plastic using a isophtalic polyester resin with surface isophtalic gel coat Hinge - Self lubricating Ertacetal plasticSeal - Ethylene Propylene Diene Monomer (EPDM) to BS EN 681-1 Optional nitrile (NBR) seal availableFittings - Grade 1.4401 (316) austenitic stainless steel to BS EN 10088-2

MISSIONRUBBER UK


INTRODUCTION

2

D

110

110

160

160

200

250

315

L1

61

61

74

74

86

102

115

L2

61

61

74

74

100

130

165

L

307

307

337

337

451

520

620

H

230

230

255

255

300

374

445

REFERENCE

1555551

1555651

1551691

1551791

1552091

1552591

1553091

Nominal Size

DN100R

DN100

DN150

DN150R

DN200

DN250

DN300

R = Stainless Steel FlapD = Outside Diameter Spigot

L1L2

DH

D

L

DN200

L

L2L1

D

HD

DN250-600


REDI

DN100 to DN600A range of PVCu non return valves complying with the requirements of BS EN 13564 - ‘Anti-flooding devices for buildings’. Sizes DN100 to DN200 are certified by the German Institute LGA.

These valves are watertight to a pressure of 0.5 bar (5m Head).

These valves have a spigot and socket with integral seal as standard for direct connection to solid walled PVCu pipe but double spigot versions are available to special order for sizes DN400 and above. They can be connected to other pipe material using Mission Rubber Flexible couplings (see separate technical brochure).

NON – RETURN VALVES

DN250 - 300

Single Flap with Locking Lever

D

400

500

630

L1

145

420

-

L2

240

330

-

L

790

1400

1700

H

490

780

1100

Nominal Size

DN500

DN400

DN600

Single Flap without Locking Lever

DN400 - 600DN100 - 200

L1L2

D

H

D

L

DN100-150

REFERENCE

1554091

T555191

T556391

MISSIONRUBBER UK


3

B

A

Norham

DN250 to DN500A range of grp non-return valves designed for connection to any pipe material using Mission RubberStandard Couplings and Bushes.

ADVANTAGES

• Resistant to 1bar (10m head) back pressure

• Low weight for ease of installation yet with high mechanical strength

• Resistant to all normal sewage effluents operating at normal temperatures (below 80 C) and not containing harmful industrial effluents.

• Seals at a low level of back pressure

• Easily connected to any type of pipe material

• Low maintenance

NON – RETURN VALVES

DN

250

300

400

500

A

485

490

605

700

C

730

825

995

1245

D

260

320

410

515

E

60

35

35

55

B

455

470

590

710

14

23

26

43

MULTI250

Reference

MULTI300

MULTI400

MULTI500

Wgt(kg)

C

D

E

D

B

A

C

D

E

D

DN250 DN300 - 500

MISSIONRUBBER UK


4

A range of grp flap valves designed for ease of installation due to their low weight but with exceptional mechanical strength and durability.

ADVANTAGES• Resistant to 1bar (10m head) back pressure (Multi-CD 0.8 bar)• Most sizes can be handled by one person due to low weight• Low weight ensures ease of installation• High mechanical strength

MULTI – NDN200 to 600A range of flap valves designed for directconnection to any type of drain or sewer pipe using Mission Rubber Standard Couplings and Bushes

ADVANTAGES• Eliminates need for concrete headwall or pipe flange for fixing e.g. can be connected to the spigot of an outfall pipe passing through gabions• No drilling required• Fast and easy installation

A

224

284

334

420

528

659

B

216

280

332

417

522

655

C

205

218

269

291

316

352

D

202

263

318

405

506

638

E

11

12

15

16

17

18

F

345

399

480

570

678

808

Reference

MULTI250N

MULTI200N

MULTI300N

MULTI400N

MULTI500N

MULTI600N

1.2

1.9

3.0

5.5

9.0

13.5

Wgt(kg)

• High resistance to corrosion and ultraviolet degradation• Seals at a low level of back pressure• Low operating head due to low weight• Low maintenance

B F

C

A

E

ØD

FLAP VALVES

MISSIONRUBBER UK


5

MULTI – BD DN100 to DN200A range of small diameter flap valves with a PN 10 flange and an integral foamed EPDM rubber gasket for direct fixing to a flange or concrete headwall.

ADVANTAGES

• Lightweight for fast and easy installation• No need for cement grout when fixing to a headwall

A

212

252

285

372

C

57

57

57

65

B

220

250

285

340

D

110

125

160

200

E

55

66

66

75

F

185

230

260

315

0.5

0.75

1.0

1.5

Reference

MULTI100BD

MULTI125BD

MULTI150BD

MULTI200BD

Wgt(kg)

MULTI – CD DN250 to 600A range of medium diameter flap valves with a PN 10 flange.Integral EPFM rubber sealing rings for sealing to concrete headwall.

ADVANTAGES• Lightweight for fast and easy installation.• Resistant to 0.8bar (8m head) backpressure.• No need for cement grout when fixing to headwall.• Hinged design ensures full face sealing when closed.

DN

250

300

400

500

600

B

395

447

565

715

840

A

420

470

585

722

835

C

153

153

153

155

162

D

250

300

400

500

600

E

75

75

85

118

120

F

400

470

570

700

840

Wgt.(kg)

8

10

15

22

30

Reference

MULTI250CD

MULTI300CD

MULTI400CD

MULTI500CD

MULTI600CD

FLAP VALVES

Wall mounting kits available


BF

C

A

EØ

D

B

F

C

A DE

MISSIONRUBBER UK


6

MULTI – NBDN200 to 1500A range of medium diameter flap valves with an inclined flap andPN 10 flange. Integral EPFM rubber sealing rings for sealing toconcrete headwall.

ADVANTAGES• Lightweight for fast and easy installation.• Inclined flap for additional security against backflow.• No need for cement grout when fixing to headwall.• Hinged design ensures flap closure when no discharge.

DN

200

250

300

400

500

600

700

800

1000

1200

1400

1500

A

343

395

448

570

676

788

1003

1125

1330

1525

1770

1860

B

343

395

448

570

676

788

935

1035

1264

1440

1640

1740

C

185

205

218

241

275

313

450

523

495

690

800

855

D

180

245

290

375

469

593

700

800

1013

1200

1400

1500

E

81

78

80

99

102

93

120

120

110

130

120

120

F

285

339

400

478

589

717

1030

1440

1400

1620

1840

1980

Wgt.(kg)

1.6

2.0

3.7

6.5

8.7

14.3

46.0

53.0

80.0

115

160

180

Reference

MULTI200NB

MULTI250NB

MULTI300NB

MULTI400NB

MULTI500NB

MULTI600NB

MULTI700NB

MULTI800NB

MULTI1000NB

MULTI1200NB

MULTI1400NB

MULTI1500NB


B F

C

A ØD

E

B

C

25

F

A

AE

DN200 - 600

DN1000

DN700,800,1200 - 1500B F

CA

ØD

E

FLAP VAVES

MISSIONRUBBER UK


7

NORHAM FLAP VALVE TECHNICAL DATA

For more information please contact usTel: +44(0)114 257 0040 • Fax: +44(0)114 257 1122 • Email: [email protected]

Mission Rubber (UK) Limited, Units 4+5, Atlas Business Park, Starnhill Close, Ecclesfield, Sheffield, S35 9TG

www.missionrubber.co.uk

NOTE:

PCD = PITCH CIRCLE DIAMETER OF THE BOLT HOLES

Flanges drilled to BS EN 1092 PN10 pitch circle diameter as standard except those marked in red.

Standard bolt holes in the flanges are not drilled to BS EN 1092 diameters (see table) but can be supplied to special order.

PCD

mm

180

210

240

295

350

400

515

620

725

HOLES

Number

8

8

8

8

4

4

4

4

4

Diameter (mm)

Ø16

Ø16

Ø22

Ø22

Ø10

Ø10

Ø10

Ø10

Ø10

Reference

MULTI100BD

MULTI125BD

MULTI150BD

MULTI200BD

MULTI250CD

MULTI300CD

MULTI400CD

MULTI500CD

MULTI600CD

295

350

400

515

620

725

820

915

1160

1320

1515

1615

4

4

4

4

4

4

6

6

6

6

7

7

Ø10

Ø10

Ø10

Ø10

Ø10

Ø10

Ø10

Ø10

Ø21

Ø15

Ø15

Ø15

MULTI200NB

MULTI250NB

MULTI300NB

MULTI400NB

MULTI500NB

MULTI600NB

MULTI700NB

MULTI800NB

MULTI1000NB

MULTI1200NB

MULTI1400NB

MULTI1500NB

TECHNICAL DATA

GENERAL LOCATIONSFlap valves should be fixed so as to avoid the accumulation of debris around the invert which could prevent the valve operating correctly.

TIDAL LOCATIONSTurbulaence of flow due to severe wave action will shorten the working life of a flap valve. Therefore it is recommended that careful consideration is given to the positioning of valves and they are installed within an outfall bay or otherwise protected from direct wave action by baffles.

Documents

Non Return and Flap Valves