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

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

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

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

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

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

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

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

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

D

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

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

Wall mounting kits available

BF

C

A

E

D

B

F

C

A DE

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

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