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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