Types of Boiler Safety Valve.
|
Type
|
Construction
|
Valve Lift
|
|
1. Ordinary spring loaded safety valve
|
Wing valve, no waste
steam piston, no floating ring.
|
D/24
|
|
2. High lift safety valve.
|
Wing valve, has waste
steam piston, no floating ring
|
D/12
|
|
3. Improved high lift safety valve
|
Wing valve, has waste
steam piston and floating ring.
|
D/12
|
|
4. Full lift safety valve
|
For high-pressure boiler,
no waste steam piston.
|
D/4
|
|
5. Full bore safety valve
|
For high-pressure boiler
up to 21 bar, operated by relay.
|
D/4
|
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