| 摘要 |
An isolation valve 10 for a fluid filled unit 12 such as a water filled heating radiator comprises valve body means 20 connected to the fluid filled unit 12, valve body means 20 having fluid flow inhibiting valve means 36 therein resiliently biased towards a fluid retaining position, spigot connector means 22 sealingly engageable with body means 20 to connect a fluid circulation circuit to fluid filled unit 12, spigot means 22 opening valve means 36 on engagement with body means 20, spigot means 22 being associated with fluid flow check valve means (14, Figure 1) and locking means 82 to retain spigot means 22 in sealing engagement with the body means 20. <IMAGE> |
