Across
- 3. used in wc and storage cisterns
- 4. used to make fitting water tight when heated
- 6. an alloy used in the plumbing trade
- 8. allows water to only flow one way
Down
- 1. incoming main shut off valve
- 2. what colour off solder bobbin is suitable for potable water
- 5. at the lowest point on any water system
- 7. used to collect rainwater from roof