
Trappex
Heating-system protection developed from hands-on gas engineering experience, with practical products designed to protect systems from debris, trapped air and pressure problems.
Explore Trappex productsManual clearance
Previous editions: Domestic v5.3 or LPG v4.0. These do not include the forthcoming IGEM tightness-testing update. Check suitability with your training centre before buying.
Optional extra. Delivery is calculated at checkout; adding a book may change the charge. While stocks last.
Review your basketA useful extra for your tool bag
This right-angled Trappex probe adaptor helps when access is tight, such as a boiler tucked inside a cupboard.
Optional tool — not needed to use your worksheet. Adding it may change your delivery charge; the total is shown at checkout.
Review your basketNeed the full pipe-sizing tables?
This worksheet uses tables D1a and D1b in the LCL Domestic Gas Safety Training Manual, Issue 6.0. Already own it? You are ready to go.
The workbook includes the chart values for its exercises. Want to work through your own examples? The full D1a and D1b tables are in the LCL Domestic Gas Safety Training Manual, Issue 6.0. Already own it? You do not need another copy.
The LCL Domestic Gas Safety Training Manual includes IGEM/UP/1B Edition 4 updates. Useful alongside your learning, but not required to complete the installation-volume workbook.
Optional. Delivery charges apply.
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