Gas Fittings

• Auto Flare Adaptor (22x3/4~£10)- designed to form a leak tight seal on the stainless piping as you tighten the fitting
  
  
• Bayonet Socket Gas Fitting (½"~£4) - for gas cooker connection
  
  • Use LDF to ensure that the self-sealing connector is off
  • The valve body should be secured to the wall
  • Bayonet fitting should face down
  • Flexible hose should hang down in a 'U' shape
    • Should not be in contact with floor
• Micro Point Socket Gas Fitting (½"~£4) - allows a neat finish to the ends of a gas carcass
  
• Gas Fire Restrictor Elbow (£12)
  
  • Ensure the top cap and washer are secure
  • Has manual screw-in isolation valve

Pliable Corrugated Tubing (PCT)

• Previously referred to as Corrugated Stainless Tube (CSST)
• Manufactured to BS7838 or BS EN 15266
• High quality alternative to more traditional copper pipework
• The industry standards covering the installation of PCT:
  • BS6891
  • IGEM/UP/2 Edition 2
  • BS5482-1
  • PD5482-3
• Has to be sleeved separately when passing through walls

Fittings

• Pipe fittings are manufactured to comply with BS7838
• Although similar in appearance to typical compression fittings, these fittings are not compression
• All joints need to remain accessible

Unventilated ducts or voids

• Pipework must not be installed in an unventilated duct or void
• If installed the pipe should be sleeved continuously with sleeve ventilated at a safe place
• Or the unventilated duct or void shall be filled with a crashed inert infill which suppose to be fire resistant and chemically neutral
• The factory applied coating shall not be considered as purpose-provided sleeving

• Used to convey all types of gas up to 75mbar
• Provides reduction in the number of fittings
• Damaged cover must be replaced with Silicone tape (25mm wide)
• BS6891/BS5482 - pipe sizing table
• Maximum pipe supports
  • 15mm
    • 2m - vertical
    • 1.5 - horizontal
  • Larger sizes
    • 2.5m - vertical
    • 2m - horizontal
• Fittings should not be buried in the structure, below ground or within a sealed section
• Striker Plate - protection where passes through structures
• Do not install in the openings of all-fuel fireplaces
• Wrap with yellow silicon tape after tightness test
  • Cover half the with of hexagon
• 500mm - maximum to the first pipe support when connected to a fixed appliance
• Equivalent length
  • Elbow - 0.3m
  • Tee - 0.5m