THE PUSH-FIT SOLUTION FOR PLUMBING AND HEATING SYSTEMS Speedfit Fittings are suitable for use with copper pipe. Includes this NEW addition: Introducing Layat Pipe Installing pipe just got a lot easier. UK PRODUCT INSTALLATION GUIDE AUGUST 2012

THE PUSH-FIT SOLUTION FOR PLUMBING AND HEATING SYSTEMS CONTENTS: Plumbing and Heating Pages 15 to 38 Underfloor Heating Systems Pages 54 to 62 Energy Saver Plus Pages 63 & 64 Fittings for Cold Water Services Pages 65 to 70 NEW IN THIS EDITION Layflat Barrier Pipe NEW 01 Page 19

Worldwide Connections The John Guest Group has a long established reputation as a world leading manufacturer of push-fit fittings, tube and other fluid control products. A reputation built on producing consistently high quality products with an ongoing ommitment to value engineering and product development. Quality Manufacture A commitment to quality is at the heart of the John Guest Philosophy. The strictest control is maintained by virtue of the fact that design and manufacture is carried out in modern purpose built manufacturing centres in west London and at Maidenhead in Berkshire. Maintaining...

THE PUSH-FIT SOLUTION FOR PLUMBING AND HEATING SYSTEMS JG Speedfit is a Push-fit system suitable for the plumbing of normal domestic hot and cold water services and central heating applications, including pressurised and combi systems. Speedfit Fittings have been designed for use with both Speedfit and copper pipe, in diameters of 10mm to 28mm. They are approved by the British Board of Agrément and Water Regulations Advisory Scheme. Speedfit ‘PEM’ fittings and PEX and Polybutylene Barrier Pipe are Kitemarked to BS7291 Parts 1, 2 and 3 Class S Licence No KM39767. Speedfit fittings and barrier...

STANDARDS AND AFFILIATIONS BS 7291 Parts 1, 2 and 3 KM39767 PEX Fittings and Barrier Pipe K24076, K24077, K24078 Extensive tests have shown that Speedfit products will withstand temperatures and pressures well in excess of normal working conditions. JG Speedfit should be installed to conform with good plumbing practice. British Gas Service has accepted the John Guest Speedfit System as being suitable for open vented and sealed central heating systems and as eligible for acceptance onto its service contracts. 25 YEAR GUARANTEE As a result of long term test programmes and rigorous quality standards...

SYSTEM FEATURES • Truly demountable without damage to pipe or fitting. • Grip and seal connection. • Superseal Insert gives secondary seal. • Reduced pipe insertion force. • Lightweight and easy to handle on site. SYSTEM BENEFITS • Installation time reduced by up to 40%. • Pipe flexibility permits the cabling of pipe through less accessible areas. • No risk of fire or flames from a blowtorch. • Easier to work in confined places. • A permanent leak-proof connection. • Corrosion free. • No scale build up. • Lower thermal diffusivity maintains safer surface temperature. • Pipe elasticity can reduce...

WORKING TEMPERATURES AND PRESSURES Application Cold Water Usual working Maximum working temperature, ºC temperature, ºC 20 20 Maximum working pressure, bar 12 (indirect and direct mains) Central Heating 82 Hot Water 65 105, short term malfunction at 114 95 3 6 (including unvented cylinders) Speedfit fittings suitable for central heating systems can withstand temperatures up to 114°C intermittently for short periods. Speedfit fittings shown as not suitable for central heating systems are used primarily on the domestic hot and cold water system accepting temperatures of up to 65°C. HANDLING FITTINGS...

HOW SPEEDFIT WORKS Speedfit Fittings have a unique grip then seal construction made up of a collet with stainless steel teeth to grip the pipe and an ‘O’ ring to provide a permanent leak proof seal. Use of the Superseal Pipe Insert ensures a double ‘O’ ring seal. An ‘O’ ring at the head of the insert and the shape of the stem, provide a secondary seal against the bore of the fitting. A combination of this and the main ‘O’ ring ensure a good connection. The stem of the insert gives greater rigidity of the length of pipe within the fitting, reducing the chance of leaks if a side load is applied....

MAKING A GOOD CONNECTION Fittings and pipe should be kept clean, bagged and undamaged before use. PREPARE THE PIPE Ensure the pipe is free of score marks. Cut the pipe square. When using Speedfit Barrier Pipe cut along an insertion mark. We recommend the use of JG Pipe Cutters. To prevent damage to the ‘O’ ring remove all burrs and sharp edges. When using Speedfit Pipe use a Superseal Pipe Insert or a standard Speedfit Pipe Insert. A twisting motion will aid insertion. The insert should only be used with Speedfit Pipe. TWIST AND LOCK FITTINGS The fitting should be in the ‘unlocked’ position,...

STANDARD FITTINGS Standard Speedfit connections are made in the same way as Twist and Lock. Push pipe up to stop Secondary Seal Main ‘O’ Ring Pipe mark indicates full insertion Pull to check the connection is secure. It is good practice to test the system prior to leaving the site or before use. Our recommended test procedure is shown in our Technical Checklist. TO DISCONNECT Ensure the system is depressurised. The screwcap on Twist and Lock Fittings will need to be turned back to the unlocked position. For both Twist and Lock and Standard fittings, push the collet square against the face of...

PIPE STOP DISTANCES Stops are located at the following distances from the end COLLET COVERS AND COLLET CLIPS Use a collet cover or collet clip to provide added security against pipe disconnection, e.g. the fitting coming into contact with rigid surfaces and behind dry-lining walls. Collet covers for use with standard Speedfit fittings, are available in white or in red or blue to allow colour coding of pipes. White or grey collet clips are used with standard fittings to prevent accidental pipe disconnection. Red or Blue collet clips provide colour coding of pipe on Twist and Lock fittings. They...