VACUUM SAFETY VALVE : HIGH PRESSURE HIGH TEMPERATURE VALVES
Vacuum Safety Valve
- A valve opening automatically to relieve excessive pressure, esp. in a boiler
- A means of giving harmless vent to feelings of tension or stress
- The safety valve is a provision in the Sentencing Reform Act and the United States Federal Sentencing Guidelines that authorizes a sentence below the statutory minimum for certain nonviolent, non-managerial drug offenders with little or no criminal history.
- A safety valve is a valve mechanism for the automatic release of a substance from a boiler, pressure vessel, or other system when the pressure or temperature exceeds preset limits. It is part of a bigger set named pressure safety valves (PSV) or pressure relief valves (PRV).
- a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level
- clean with a vacuum cleaner; "vacuum the carpets"
- void: an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"
- A space entirely devoid of matter
- A space or container from which the air has been completely or partly removed
- the absence of matter
- A gap left by the loss, death, or departure of someone or something formerly playing a significant part in a situation or activity
Barry Island 45690 Leander July 1968
Although I'd rather be taking photos of this engine working at the Great Central here it is at Woodham's scrapyard in Barry South Wales 40 years ago. Note how complete engines were then - it still carries its vacuum ejector, safety valves and mechanical lubricator - even after 4 years in the scrap line.
The white wall tends to detract from the view of Jubilee Class 4-6-0 45690 Leander but I believe it was actually a remnant of the old Barry Railway loco works. This was the first time I had knowingly seen a Jubilee and its sleek lines impressed me as they still do.
Built by the LMS in 1936 45690 was withdrawn from Bristol Barrow Road shed in 1964 & spent 8 years at Barry before purchase & preservation. After spells at Dinting & the Severn Valley Railway it is now based at the East Lancs Railway at Bury. It will be one of the stars of the Great Central Railway's October Steam Gala at Loughborough this year.
Woodhams Barry 17.8.63
54XX 0-6-0PT 5422 has a full set of rods, cab window glass intact, vacuum hoses in place, safety valve cover present, old-style BR totem and is essentially all ready to go.
See also:
cast steel ball valves
apco air release valves
ball valve suppliers
spring safety valve
torbeck side entry toilet cistern valve
air compressor auto drain valve
mechanical mixing valve