Emerson SAPAG CLASAR Series Stücklistenhandbuch

Check valves CLASAR®

Installation, operating and maintenance instructions

Emerson reserves the right to change the contents without notice SAHSB-0020-EN-1306

1. General instructions

1.1 General functioning

CLASAR check valve shutters move axially and valves can operate in any position, e.g. horizontal

flow, upward and downward flows.

1.2 Description

There are three types of CLASAR check valves:

• CLASAR type I for wafer-mounting between flanges DN 150

• CLASAR type II for wafer-mounting between flanges from DN 200 to DN 500

• CLASAR type Ill complete with flanges for DN > 600

CLASAR valves components

• Body

• Counter flange or rear shell

• Shutter

• Spring

Note: CLASAR valves are delivered without flange or support seals or tie-rods or bolts to secure

valves to pipework.

As for most valves and fittings, sliding flanges or similar on the pipework are recommended

to provide the clearances needed to insert and remove the valve and to prevent unacceptable

stressing due to inevitable misalignment.

At least one of the pipes connected to the valve must be firmly anchored to withstand the thrust

occurring on valve closure.

Parts list

Rep Designation

1 Body

2 Obturator

3 Spring

4 O-Ring

5 Counter flange

Type 1

Open

Closed

Open

Closed

Open

Closed

Type 2

Type 3

SAPAG

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Check valves CLASAR®

Installation, operating and maintenance instructions

Emerson reserves the right to change the contents without notice page 2

3 Maintenance

3.1 Spare parts

Available spares are as follows:

• Shutter

• Return spring

• Ring seal between body and counterflange or rear shell

No special tool is needed for CLASAR valve maintenance.

3.2 Dismantling

Wafer-mounted CLASAR

• Remove valve from pipe and place on a clean plane surface with the upstream or body side

facing downwards and the downstream or counter flange side uppermost. The shutter and

spring should be visible. Uncouple the counter flange in the recesses provided at the junction

between the counter flange and the body, lever out and remove the counter flange.

• Remove spring and shutter.

CLASAR with flanges

• Remove valve from pipe and place on a clean plane surface with the body facing downwards

and the counter flange uppermost so that the shutter and spring are accessible. Loosen tie-

bolts securing the sleeve to the valve body and remove the rear shell followed by the spring and

shutter.

• When the dismantling is finished:

- Check condition of body mating surfaces, there should be no corrosion pitting or material torn

away. Make especially careful check in the shutter bearing region. Clean as necessary with

emery paper.

- Check condition of shutter supports in contact with the body. Check condition of ring

connecting fins. Change shutter if necessary.

- Check return spring.

- Change ring seal.

3.3 Reassembly

• Position shutter in body so that mating surfaces are in contact each other.

• Insert spring.

• Generously lubricate the ring seal and body bore.

• Pressing by hand, fit the counterflange to the valve body (type I and II CLASAR).

• Alternatively, bolt the rear shell into position (type Ill CLASAR with flanges).

2. Installation

2.1 Instructions before start up

• Before mounting, carefully check the valve for cleanliness. Remove all foreign bodies from the

pipework and flush the system through with water or compressed air as appropriate.

• Never weld flanges to the pipe when the CLASAR is in position because this might damage the

shutter.

• Provide a trashrack or other solids removal device if solids are liable to be borne along by the

flow and foul the shutter region and prevent closure.

• Check that the flow takes place in the direction shown by the arrow on the valve.

• CLASAR valve types I and II for Wafer-mounting must be perfectly aligned with the pipe centre-

line. Use spacer tubes mounted on tie-rods if necessary.

IMPORTANT

Particular care should be taken to remove

pieces of weld metal and shavings liable to

damage the shutter and sealing surfaces.

DN 80 100 125 150 200 250 300 350 400 450 500 600 700 800 900 1000 1200

PN10 8 8 8 8 8 12 12 16 16 20 20 20 24 24 28 28 32

NF E 29203 M16 M16 M16 M20 M20 M20 M20 M20 M24 M24 M24 M27 M27 M30 M30 M33 M36

NF E 29209 160 180 210 240 220 240 280 320 340 320 400 130 130 140 150 150 170

DIN 2501 160 180 210 240 220 240 280 320 350 340 420 140 150 160 170 190 190

BS 4504

PN16 8 8 8 8 12 12 12 16 16 20 20 20 24 24 28 28 32

NF E 29203 M16 M16 M16 M20 M20 M24 M24 M24 M27 M27 M30 M33 M33 M36 M36 M39 M45

NF E 29209 160 180 210 240 220 260 290 330 350 340 430 150 150 170 160 170 190

DIN 2501 160 180 210 240 220 260 300 330 360 360 440 150 150 170 180 190 220

BS 4504

PN20 4 8 8 8 8 12 12 12 16 16 16 20 - - 32 36

NF E 29203 M16 M16 M20 M20 M20 M24 M24 M27 M27 M30 M30 M33 - - M38 M39

NF E 29209 170 190 230 260 240 260 300 350 360 360 440 170 - - 210 220

DIN 2501 170 190 220 260 240 270 320 370 390 380 470 170 - - 180 190

BS 4504

PN25 8 8 8 8 12 12 16 16 16 20 20 20 24 24

NF E 29203 M16 M20 M24 M24 M20 M27 M27 M30 M33 M33 M33 M36 M39 M45

NF E 29209 170 200 230 260 240 270 310 360 380 370 450 160 170 180

DIN 2501 1770 200 230 2660 2440 270 310 360 3880 370 450 170 170 180

BS 4504

PN40 8 8 8 8 12 12 16 16 16 20 20 20

NF E 29203 M16 M20 M24 M24 M27 M30 M30 M33 M36 M36 M39 M45

DIN 2501 170 200 230 260 250 280 330 380 400 390 470 200

BS 4504 170 200 230 2660 260 2880 330 380 400 390 490 210

PN50 8 8 8 8 12 16 16 20 20 24 24

NF E 29203 M20 M20 M20 M20 M24 M27 M30 M30 M33 M33 M33

DIN 2501 180 180 240 270 260 300 340 390 410 400 490

BS 4504

M16 110 6/8

M20 220 6/8

M22 290 6/8

M24 370 6/8

M27 540 6/8

M30 340 4/6

M33 500 4/6

M36 650 4/6

M39 800 4/6

M45 1300 4/6

Check valves CLASAR®

Installation, operating and maintenance instructions

Emerson reserves the right to change the contents without notice page 3

Bolting

Torque

Max. torque for thru-bolting (Nm) - non oxidized new bolting

ø Max. torque Quality class

Number of bolts

ø of bolts

Length of thru-bolts S

Length of thru-bolts F

Number of bolts

ø of bolts

Length of thru-bolts S

Length of thru-bolts F

Number of bolts

ø of bolts

Length of thru-bolts S

Length of thru-bolts F

Number of bolts

ø of bolts

Length of thru-bolts S

Length of thru-bolts F

Number of bolts

ø of bolts

Length of thru-bolts S

Length of thru-bolts F

Number of bolts

ø of bolts

Length of thru-bolts

S = welding neck or slip-on flanges

F = flat flanges

DN80 - DN500

Mounting between flanges

DN60 - DN1800

Mounting with flanges

Check valves CLASAR®

Installation, operating and maintenance instructions

Emerson reserves the right to change the contents without notice page 4

CLASAR pipe mounting - Force pump

CLASAR

Check valve

Pump

Pump Pump

CLASAR

Check valve

CLASAR

Check valve

Isolation valve concentric design

CLASAR

Check valve

Emerson reserves the right to change the contents without notice page 5

Check valves CLASAR®

Installation, operating and maintenance instructions

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