20 PSI Safety Valve Mamod

£19.00 GBP
£19.00 GBP
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This Safety Valve is set to 20 PSI for use 

Compatible Models:

SP2,SP4,SP5,SP6, SR1, TE1, SA1, SA1L, FE1, Kits, Steam Wagon

1/4 BSF Thread, Approximately Pre 1960's safety valves used 3/16 BSF due soon