Gaskets & Piping Flashcards
0
Q
Blind
A
- solid forgings that are placed between the pipe flanges
- used in conjunction with gaskets to isolate a system
1
Q
Blank Blind
A
-installed in the suction and discharge lines of the pump while servicing
2
Q
Flange blinds
A
-one gasket
-
3
Q
Spectacle blind
A
- visual indicator that is a handle with a hole in it
- two gaskets
- stays in place when system is operational
3
Q
Volute blind
A
- Solid in construction
- seal the pump volute after you remove the pump body
- isolates the pump housing when the pump is removed
5
Q
Sniffer gas detectors
A
-bellow type pump and detector tubes that contain chemical reactants
6
Q
Pancake blind
A
-Visual indicator is shaped like a ping pong paddle
7
Q
Unconfined
A
-nothing to hold it in place
8
Q
Purging mediums
A
-nitrogen, carbon dioxide, steam, water and air
9
Q
Gasket Joint designs
A
- flat face (unconfined)
- raised (unconfined)
- tongue & groove (confined)
- male & female flange (semi confined)
- ring joint (self confined)
10
Q
Flat Faced unconfined
A
- most common and on cast iron flanges of pumps and valves
- also on the split lines of pumps, compressors, internal combustion engine joints
- allows them to float freely either towards or away from the fluid pressure under load
11
Q
Raised face unconfined
A
- on piping connections
- extremely high pressures
- where pressures range up to 900 psi
- they are marked with pipe size, pressure class and ring joint groove number
- pressure class is not psi
12
Q
Tongue and groove Confined
A
- no room for gasket to move
- good for high pressure applications
- they require closer tolerances
13
Q
Male & Female Semi confined
A
-confined on its 2 flat sides and on the outside edge
14
Q
Self confined ring joint
A
-have machined grooves machined into both flange faces
