AVK UNDERGROUND FIRE HYDRANT
AVK UK Limited
OM180907
OPERATION & MAINTENANCE MANUAL
29/288
The designs, materials and specifications shown are subject to change without notice due to our continuing programme ofproduct development.
Page 1: ...ND FIRE HYDRANT AVK UK Limited OM180907 OPERATION MAINTENANCE MANUAL 29 288 The designs materials and specifications shown are subject to change without notice due to our continuing programme of product development ...
Page 2: ...suitable for the introduction and retrieval of swabs It is recommended that applications in a corrosive atmosphere or sited in exposed locations or in the proximity of sea water or spray use a stainless steel stem 1 4404 316 and all exposed fasteners are in A4 stainless steel The gunmetal outlet and class A coating 300 microns inside out are also recommended MAINTENANCE BS 750 only requires the pr...
Page 3: ...F for M 16 Spanners or Sockets Tee Key or large adjustable spanner 1 Ensure hydrant is in the partly open position by turning stem cap 3 in direction indicated for opening one or two turns to lift stopper off seat 2 Remove 3 No M 12 or M 16 Hex Head Screws 15 and Washers 16 3 The bonnet can now be removed vertically with the stem 4 and stopper 20 it can be easily lifted out of the body If the hydr...
Page 4: ... REMOVAL RE ASSEMBLY 1 Remove dust cap 17 from outlet 18 2 Remove outlet 18 by removing 4 No bolts 15 and washers 16 3 To replace the outlet 18 and O ring 19 lubricate O ring 19 if necessary using an approved grease then locate it in the groove in body 21 Ensure dust cap 17 retaining ring is located in small groove on body 21 so that a bolt 15 passes through the ring Place outlet 18 in position en...
Page 5: ...hen slightly twist the fitting tool to dis engage it from the autofrost valve 22 and withdraw it through the outlet 18 4 Carefully open the hydrant to check satisfactory sealing under pressure The autofrost valve 22 will seal between 0 5 and 1 Bar pressure Then close hydrant and check that autofrost valve is draining correctly 5 Refit outlet dust cap 17 to outlet 18 TEST On completion of Maintenan...
Page 6: ... No CUSTOMER No This drawing and the copyright therein are the property of AQUA GAS MANUFACTURING LTD and all information which it contains is confidential The drawing must not be reproduced or disclosed nor must any information taken therefrom be disclosed without the prior consent in writing of AQUA GAS MANUFACTURING LTD TITLE MODIFICATION A4 AQUA GAS MANUFACTURING LTD DENBY WAY HELLABY IND EST ...
Page 7: ...s confidential The drawing must not be reproduced or disclosed nor must any information taken therefrom be disclosed without the prior consent in writing of AQUA GAS MANUFACTURING LTD MODIFICATION A3 MACHINING DATA MAT PATT No PROJECTION TO B S 308 TITLE LOCATION OF STOPPER MATERIAL SCALE NTS DRAWN D G CHECKED D C DATE 10 10 2002 ISSUE No DRAWING No AQUA GAS MANUFACTURING LTD DENBY WAY HELLABY IND...
Page 8: ...any information taken therefrom be disclosed without the prior consent in writing of AQUA GAS MANUFACTURING LTD TITLE MODIFICATION A4 AQUA GAS MANUFACTURING LTD DENBY WAY HELLABY IND EST ROTHERHAM S YORKS TEL 01709 549136 FAX 01709 541263 STEP 1 TOOL REPLACEMENT OF AUTOFROST VALVE 29 288 XXXXX C D G 26 3 2003 N T S D C STEP 3 STEP 2 ENSURE LUGS HAVE PROTRUDED THROUGH CASTING STEP 2 STEP 1 TOOL AUT...
