www.druspares.co.uk

Drugasar was set up in 1975 to sell and maintain DRU heaters throughout the UK. The name was an acronym for DRU, gas and air, and its offices were established in Manchester, where the company still is today.

Since its original introduction to the UK in 1951, Drugasar has supplied heaters to over 5000 churches and associated buildings, as well as thousands more schools, MOD properties, local government offices and other commercial premises.

Some more unusual applications have included lighthouses, zoos, racecourses, buses, trains and even a butterfly farm!

DRU fires can be found in Windsor Castle, the Sandringham Estate, Charterhouse School, Coalbrookdale Church in Ironbridge and the famous Jamaica Inn in Cornwall.


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796412   H T LEAD G3T-02 HR300 **USE 795977**
796413   HEAT EXCHANGER G3T (02)
796414   HEATER MOUNTING PLATE G3T-02/03
796415   FLUE GROMMET G3T/01 G3T/02**USE 796140**
796417   ADAPTOR IRON 1/4 X 3/8. G3T/02
796418   BRACKET G3T-02
796419   INLET PIPE G3T-02/03
796420   INLET ADAPTOR G2T-02
796421   LOW THROTTLE LPG 0.45MM(WHITE) G3T/02/03
796422   LOW THROTTLE NG 0.65MM(RED) G3T/02/03
796423   M 10 SPLIT NUTS [ USED ON 734017 ]
796424   M.B. INJ. NG CODE 150 G3T/02
796425   M.B. INJ. LPG CODE 100 G3T/02
796427   G2 TERMINAL GRILLE SPACER
796428   SILICONE SEALING PLUGS
796429   M4 x 30 SREWS
796430   SOLENOID KIT HR300 **N/A**
796431   COPPER PIPE 83MM (HR300 SOL. KIT )
796432   COPPER PIPE 70MM ( HR300 SOL. KIT )
796433   SOLENOID KIT G2/T -02
796434   24MT STRAIGHT ADAPTOR 3/8X10MM
796435   PIGALLE SOLENOID VALVE AND KIT **N/A**
796436   ELBOWS FOR PIGALLE SOL. KIT
796437   CLOSE TAPER NIPPLES
796438   LONG COPPER PIPE WITH BEND PIGALLE
796439   COMPRESSION NUT
796440   ELBOWS 1/4BSPTAPERX12MMCOMPRESSION"
796447   NL31 OUTER CASE
796448   NL31 LPG CONVERSION SET
796449   NL31 CONTROL PANEL
796450   CASING HORIZON 300 (BROWN)
796451   WOOD PANEL HR 300
796452   HEAT EXCHANGER HR 300
796453   BACK/BOTTOM PLATE HR 300
796454   MOUNTING PLATE HR300
796455   BURNER BAR(GASKETS/VENTRI)HR30
796456   MAIN INJECTOR N.G. HR300 1.5MM
796457   MAIN INJECTOR LPG HR300 1.00MM
796458   VALVE JUNKERS CR6 HR300
796459   LOW SET THROTTLE NG HR300
796460   LOW SET THROTTLE LPG HR300
796461   DRESSING STRIP HR300
796462   FLUE SPIGOT (S2)
796463   OUTER CASE BEIGE HORIZON 300
796464   WHITE HORIZON COMPLETE CASING
796474   WHITE HORIZON SIDE PANEL
796475   WHITE HORIZON CONTROL KNOB PANEL
796476   DRESSING STRIP, CASING/WALL WHITE HORIZ
796477   LPG CONVERSION SET FOR PIGALLE(EUROSIT)
796478   LPG CONVERSION SET PIGALLE(JUNKERS VALV)
796479   NG CONVERSION SET PIGALLE SIT VALVE
796480   NG CONVERSION SET PIGALLE JUNKERS VALVE
796483   PILOT INJECTOR NG(27) PIGALLE E/SIT
796484   PILOT INJECTOR LPG(14)PIGALLE E/SIT
796496   ET CONTROL BOX C/W PLUG/LEAD **N/A**
796497   FAILURE INDICATION LIGHT ET
796498   CONTROL VALVE G5/G10ET **N/A**
796499   KNOBS FOR ET SENSORS
796500   REMOTE SENSOR ET SERIES **N/A**
796501   REMOTE SENSOR (CONCEALED KNOB)****N/A***
796502   INTEGRAL SENSOR ET SERIES
796507   ELECTRONIC CONTROL BOX ET **N/A*
796508   OUTER CASE (WHITE) G5
796509   OUTER CASE (WHITE) G6
796510   OUTER CASE (WHITE) G8
796511   OUTER CASE (WHITE) G10 **N/A**
796512   8 CORE 0.22MM SQ CABLE(per metre)
796515   ET CONTROL PANELS - WHITE
796516   IGNITION/IONISATION UNIT
796517   GASKET FOR ELECTRODE PLATE ET
796518   MAINS SUPPLY ON/OFF SWITCH ET
796519   INJECTOR COVER PLATE
796520   OUTER CASING(CLOSED FRONT) PIGALLE
796521   TOP GRILLE PIGALLE
796522   CONTROL VALVE PIGALLE (EUROSIT)
796523   PILOT BURNER (SIT) NG PIGALLE
796524   HT LEAD PIGALLE
796525   PILOT GASKETS PIGALLE
796526   THERMOCOUPLE PIGALLE
796527   LOW SET THROTTLE NG(1.40)PIGALLE E/SIT
796528   LOW SET THROTTLE LPG(0.90)PIGALLE E/SIT
796529   FLOOR PROTECTION PLATE PIGALLE
796530   GASKET HEAT EXCHANGER CHAMELEON
796531   GLASS STRIP PIGALLE
796532   GASKET GLASS WINDOW LONG PIGALLE
796533   GASKET GLASS WINDOW SHORT PIGALLE
796534   THERMOSTAT PIGALLE (JUNKERS VALVE)
796535   GASKET 1.300M PIGALLE ** USE 796338**
796536   MAIN BURNER INJ. 2.60 NG PIGALLE
796537   MAIN BURNER INJECTOR LPG PIGALLE
796538   SPARK ELECTRODE PIGALLE
796539   OVERHEAT THERMOSTAT PIGALLE (CE)
796540   HEAT EXCHANGER GASKET PIGALLE
796599   SOLENOID VALVE KIT G5/6(02) (G5T/6 ART)
796600   SOLENOID KIT **G3T(03) (G3T/ART)**
796601   12mm COMPRESSION ELBOW G3T/03
796602   1/4" BSP TAPER X 12mm COMP.ADAPTOR G3T03
796603   1/4" MALE TAPER X FEMALE ELBOW G3T/03
796604   12mm OLIVES G3T/03 (USE 796361)
796605   12mm x 9 COPPER TUBE (BENT) G3T/03
796606   12mm x 6 COPPER TUBE (BENT) G3T/03
796607   12mm x 1 1/2" COPPER TUBE (STRAIGHT) G3T/03
796608   TERMINAL BOX SUPPORT BRACKET G3T/03
796609   SOLONOID DEFLECTOR SHIELD
796610   BURNER BAR G2T(03)
796611   VALVE OUTLET PIPE G2T (03)
796612   BURNER GASKET G2T (03)
796613   GAS VALVE G2T(02) / (03) [CR 630 401]
796614   THERMOCOUPLE G2(03) ** USE 796395 **
796615   MAIN BURNER INJECTOR NG 1.50MM G2T/03
796616   MAIN BURNER INJECTOR LPG 0.88MM G2T/03
796617   COUPLING ELBOW G2T (03)
796618   CONVERSION KIT TO LPG FOR ART 2 HEATER
796619   CONVERSION KIT TO NG G2T/02
796620   BURNER BAR G3T(03)
796621   HEAT SHIELD (G3T/03)
796622   GAS VALVE JUNKERS G3T-02/03 (CR 630 403)
796623   BURNER GASKET G3T/3 G5/6-02 ART3/10
796624   PILOT BURNER NAT GAS G3T-G10T (NEW TYPE)
796625   PILOT BURNER LPG G3T(03)-G10T
796626   M.B. INJECTOR NG G3T(03) & ART8/10-01 LPG 1.90MM
796627   MAIN BURNER INJECTOR LPG G3T(03) 1.10MM
796628   GAS PIPE G3T(03)
796629   HT LEAD G3T - 03
796630   CONTROL KNOB PANEL G3T(03)**USE 796654**
796631   PILOT INJECTOR NAT GAS CODE 48
796632   PILOT INJECTORS LPG CODE 52
796633   CONVERSION KIT TO NG G3T/03
796634   CONVERSION KIT TO LPG ART3 *USE 795599*
796635   CONVERSION KIT TO NG G3T/O3
796636   CONVERSION SET TO LPG G3T/02
796650   OUTER CASE (BEIGE) G5T/02 (BEIGE)
796651   OUTER CASE (BEIGE) G6T/02 (BEIGE)
796652   BURNER BAR G5T/02
796653   BURNER BAR G6T/02
796654   CONTROL KNOB PANEL G5-6T/02
796655   CONTROL VALVE G5-6/02
796656   GAS SUPPLY PIPE G5-6T/02
796657   MAIN BURNER INJECTOR NG 2.25 G5T/02
796658   MAIN BURNER INJECTOR NG 2.45 G6T/02
796659   MAIN BURNER INJECTOR LPG 1.55 G5T/02
796660   MAIN BURNER INJECTOR LPG 1.75 G6T/02
796661   H T LEAD G5-6T/02 (900MM)
796662   LOW SETTING THROTTLE NG G5T/02 (0.85)
796663   LOW SETTING THROTTLE NG G6T/02 (1.05)
796664   LOW SETTING THROTTLE LPG G5T/02 (0.65)
796665   LOW SETTING THROTTLE LPG G6T/02 (0.80)
796666   OUTER CASING G8/T (BEIGE)*N/A*
796667   OUTER GASING G10/T (BEIGE)
796668   OUTER CASE G2T(ART)
796669   OUTER CASE G3T(ART)
796670   LOW SETTING THROTTLE NG .60 G2T/03
796671   LOW SETTING THROTTLE LPG .45 G2T/03
796672   LOW SETTING THROTTLE NG .70 G3T/03
796673   LOW SETTING THROTTLE LPG .50 G3T/03
796674   OUTER CASING G5T ART
796675   OUTER CASING G6T ART
796676   OUTER CASING G8T ART
796677   OUTER CASING G10T ART
796678   ART8-01/ART10-01 N.G. M.B. INJECTORS 2.90
796679   ART8-01/10-01 M.B. INJECTOR 1.90 *USE 796626*
796680   GAS CONTROL VALVE ART 8/10 - 01
796681   CONVERSION KIT TO NG ART 8 - 01
796682   CONVERSION SET TO LPG ART 8 - 01
796683   BURNER BAR ART 8 - 01
796684   CONVERSION SET TO NG ART 10 - 01
796685   CONVERSION SET TO LPG ART 10 - 01
796686   BURNER BAR ART 10 - 01
796687   GLAND NUT PILOT TUBE ART3-10 (SIT)
796688   OLIVE PILOT TUBE ART3-10 (SIT)
796689   PILOT INJECTOR No30 LPG (SIT)
796690   PILOT INJECTOR No51 N.G. (SIT)
796691   GLAND NUT THERMOCOUPLE (SIT)
796692   SPARK PLUG ART 3 - 10 (SIT)
796693   SPARK PLUG ART 2 (SIT)
796694   GLAND NUT (SIT)
796695   PILOT BURNER GASKET (SIT)
796696   PILOT ASSEMBLY ART2 (SIT) NG
796697   HT LEAD ART 8 - 10
796698   PILOT ASSEMBLY ART3 - 10 (SIT) NG
796699   H.T. LEAD ART 2
796700   PILOT ASSY. ART 3-10 (SIT) LPG
796800   CASING COSY HEATER BEIGE
796801   THERMOCOUPLE FOR COSY HEATER
796802   SPARK ELECTRODE COSY
796803   BURNER BAR COSY HEATER
796804   GAS CONTROL VALVE FOR COSY HEATER
796805   HEAT EXCHANGER FOR COSY HEATER
796806   COVERPLATE GASKET ** USE 795350**
796807   CONTROL KNOB FOR COSY HEATER
796808   MAIN BURNER INJECTOR COSY HEATER NG
796809   MAIN BURNER INJECTOR LPG COSY
796810   BURNER GASKET FOR COSY
805695   LOGS - CASTELLO
805764   VALVE - AVANTO/DIABLO
805820   GLASS FRONT - DIABLO
805821   DIABLO SIDE GLASS
805924   VERMICULITE - CASTELLO
805986   PILOT BURNER - AVANTO
806003   REMOTE CONTROL FOR SPIRIT
806011   GLASS WINDOW - PALAZZO
806014   REMOTE CONTROL & RECEIVER - CONCERTO
806025   GLASS WINDOW - AVANTO
806035   GLASS WINDOW - CONCERTO
806036   LOGS - AVANTO
806041   LOGS - CONCERTO
806044   LOGS - PALAZZO
806047   DOOR MAGNETS FOR FIRES
806086   LOGS - VITO
828527   THERMOCOUPLE - AVANTO
901000   DIABLO MANTEL ALU-METALLIC 22130
901001   DIABLO MANTEL SAND METALLIC / BRONZE 22131
901002   DIABLO MANTEL INOX (STAINLESS STEEL) 22132
901003   DIABLO MANTEL ANTHRACITE 22143
901004   DIABLO ORNAMENTAL PIPE 22164
901005   GAS VALVE FOR DIABLO FIRE **USE 805764**
902000   BOLERO CONVERSION KIT LPG *N/A*
903000   PRIMO TRENTO FLUE PLATE BA TOP FLUEING ***USE 905000***
903001   PRIMO TRENTO FLUE PLATE AA REAR FLUE ***USE 905001***
903002   TRENTO CASING BLACK 22147
903003   PRIMO CASING EXC CAST IRON TOP PLATE
903004   PRIMO TOP PLATE AA REAR CONNECTION
903005   PRIMO TOP PLATE TOP CONNECTION 22146
904000   EGALE CASTELLO FRONT BLACK 22118
904001   EGALE CASTELLO FRONT BRONZE 22119
904002   EGALE ESTATE FRONT BLACK 22167
904003   PANORAMA ESTATE FRONT BLACK 22168
904004   ARONDE ESTATE FRONT BLACK 22169
905000   FACET FLUE RESTRICTOR PLATE BA TOP FLUE 22165
905001   FLUE RESTRICTOR FACET AA REAR FLUE 22166
905002   FACET FRONT BLACK 22157
905003   FACET FRONT ALU-METALLIC 22158
905004   FACET FRONT BRONZE 22159
906000   WALL FLUE KIT INC 90 DEGREE BEND 24028
906001   VERTICAL FLUE TERMINAL KIT 24029
906002   FLAT ROOF TILE DRU FIRES 24031
906004   UNIVERSAL LEAD TILE DRU FIRES 24032
906005   90 DEGREE FLUE BEND GALV DRU FIRES 24033
906006   45 DEGREE FLUE BEND GALV DRU FIRES 24034 (SET OF 2)
906007   CONCENTRIC FLUE PIPE 1000MM 24035
906008   CONCENTRIC FLUE PIPE 500MM DRU FIRES 24036
906009   TELESCOPIC FLUE PIPE 325-440MM 24037
906010   CONCENTRIC FLUE PIPE 1000MM ANTHRACITE 24041
906011   CONCENTRIC FLUE 500MM ADJUST ANTHRACITE 24042
906012   WALL FLUE KIT SMOOTH 90 BEND ANTHRACITE
906013   90 DEG SMOOTH BEND ANTHRACITE 24044
906014   WALL FLUE KIT EXCLUDING BEND 24045
906015   CONCENTRIC FLUE PIPE 1000MM BLACK 24046
906016   CONCENTRIC FLUE PIPE 500MM BLACK
906017   90 DEGREE SMOOTH BEND BLACK 24048
906018   CHIMNEY MOUNTING PLATE 22069
906019   MTRS OF 80MM FLEXIBLE FLUE LINER - 24083
906020   80MM FLEXIBLE FLUE CONNECTOR - 24084
906021   CONCEALING RING 220 x 220 ANTHRACITE - 24055
906022   BLACK METAL LINING ESTCAS 22111
906023   CONVERSION KIT - SOPRANO FIRE 26258
906024   THERMOSTATIC REMOTE CONTROL UNIT
907000   CONCERTO FRONT P ALU METALLIC 22198
907001   CONCERTO FRONT P SAND METALLIC 22197
907002   CONCERTO FRONT F ALU METALLIC 22196
907003   CONCERTO FRONT F SAND METALLIC 22195
907004   CONCERTO F FRONT ANTHRACITE 22216
907005   FRONT CONCERTO F STAINLESS STEEL 22267
907916   TUBE OF ROPE ADHESIVE
908000   AVANTO FRONT F SAND METALLIC 22193
908001   AVANTO FRONT F ANTHRACITE 22194
908002   AVANTO FRONT P SAND METALLIC 22206
908003   AVANTO FRONT P ALU METALLIC 22207
908004   AVANTO FRONT P ANTHRACITE 22208
908005   CHIMNEY BREAST SECTION 400 X 1400 71056
909000   PALAZZO FRONT SAND METALLIC 22199
909001   PALAZZO FRONT ALU METALLIC 22200
909002   PALAZZO FRONT INOX 22201
909003   PALAZZO FRONT P 02 SAND METALIC 22222
909004   PALAZZO FRONT P 02 ALU -METALLIC 22223
910000   VITO FRONT SAND METALLIC 22219
910001   VITO FRONT ALU-METLLIC 22220
910002   VITO FRONT ANTHRACITE 22218
911000   SOPRANO FRONT F SAND METALLIC 22224
911001   SOPRANO FRONT F ALU METALLIC 22225
911002   SOPRANO FRONT F ANTHRACITE 22226
911003   SOPRANO FRONT P SAND METALLIC 22227
911004   SOPRANO FRONT P ALU METALLIC 22228
912000   SPIRIT FIRE BED COAL 22229
912001   SPIRIT FIRE BED TWIGS 22230
912002   SPIRIT FIRE BED PEBBLES/DRIFTWOOD 22231
912003   SPIRIT HEARTH WHITE (POLAR WHITE)
912004   SPIRIT HEARTH BEIGE (CREAM FIORITO)
912005   SPIRIT HEARTH BLACK (KENYAN BLACK)
912006   SPIRIT FASCIA GOLD METALLIC 22235
912007   SPIRIT FASCIA SILVER METALLIC 22236
912008   SPIRIT FASCIA STAINLESS STEEL 22237
923001   BATTERY 9V (TYPE 6LR61) - AVANTO
923100   BATTERY 1.5V PENLITE (TYPE AA) - AVANTO
955171   CARTON BOX - PALAZZO
955177   CARTON BOX - AVANTO
999999   HEATING PACK MISCELLANEOUS PARTS
2000141   IGNITION CONTROL BOX FUSE K14 20x5MM 2A
2000142   AIR TEMP CONTROL BOX FUSE K14 20MM QB 2A
38740485   BURNER - CASTELLO
38740909   FRONT PANEL (ANTHRACITE) - PALAZZO
38740913   DOOR FRAME - PALAZZO
38740917   BAFFEL PLATE CONCERTO/AVANTO ECT.
38740922   FRONT PANEL ANTHRECITE - AVANTO
38740924   GLASS PANEL - AVANTO
38740927   BURNER - PALAZZO
38740935   FRONT PANEL (ANTHRECITE) - CONCERTO
38740937   GLASS PANEL - CONCERTO
38740975   BURNER - AVANTO
38740976   BURNER - CONCERTO
38741021   PALAZZO VARIO BURNER
1880B   M INNER CONE B11/S1000
1883A   S HALF MOON CERABLANKET
1883B   S HALF MOON CERABLANKET
1883C   S HALF MOON CERABLANKET
1884B   M PERFORATED SEGMENTS
1891BRINK   BURNER CASTING MACHINED TO BRINK SPEC
1897A   B11 LARGE PANS
1911A   M BURNER PIPE
1911B   M BURNER PIPE
1913A   FULL MESH SHEET
1913B   FLAT STRIP
1913C   MESH COMPLETE
1913D   SHEETS EXPANDED METAL 1219 x 610
1916A   SVALVE REFLECTOR BRACKET
1961A   ALUMINIUM BOX WITH HOLES
1961B   ALUMINIUM BOX NO HOLES
2028A   ROLLED PERF SMALL
2031A   S REFLECTOR B6/S400
2035A   THERMOCOUPLE BRACKET NEW PATTERN
2766LPG   S ROBERTSHAW VALVE (LPG)
2766NG   S ROBERTSHAW VALVE (NG)
300038A   CARTON TOP/BOTTOM TRAY FOR HEATSTAR IND
300038B   CARTON INSERT FOR HEATSTAR IND
300039A   DIVIDER PADS FOR BROODER CARTONS
3125A   S COMPLETE IMIT THERMOSTAT ASSY
3125U   M IMIT THERMOSTAT UNASSEMBLED
3180 A-B   S NUT/TAIL PIECE 5/16 X3/8"
3180A   NUT & TAIL PIECE KIT B6 3/8"
3180B   NUT & TAIL PIECE KIT B11 1/4"
3289A   CARTON
3631A   THERMOCOUPLE-Q309A2788
4196A   M NOISE FILTERS
4277A   S THUMB SCREW M8 UNDRILLED
A10TLG   DRUTRONIC G10T/ET HEATER LPG
A10TNG   DRUTRONIC G10T/ET HEATER NG
A5TOLG   DRUTRONIC G5/ET HEATER LPG
A5TONG   DRUTRONIC G5/ET HEATER NG
A6TOLG   DRUTRONIC G6T/ET HEATER LPG
A6TONG   DRUTRONIC G6T/ET HEATER NG
A8TOLG   DRUTRONIC G8T/ET HEATER LPG
A8TONG   DRUTRONIC G8T/ET HEATER NG
ADMIN   CARRIAGE & ADMIN CHARGE
AIDC614   45 COAXIAL ELBOW EVERFLO ST150
AIDC619   90 COAXIAL ELBOW 60/100 EVERFLO ST150
AIKIT50   HORIZONTAL COAXIAL FLUE KIT 60/100 ST150
AIPC100   1MT COAXIAL PIPE 60/100 EVERFLO ST150
AIPC50   0.5MT COAXIAL PIPE EVERFLO ST150
ALTOALU   ALTO- ALU METALLIC - 22250
ALTOSAN   ALTO - SAND METALLIC - 22251
ART10LG   ART 10 - 01 "G" SERIES HEATER LPG
ART10NG   ART 10-01 "G" SERIES HEATER
ART4LG   ART 4 - 01 LG HEATER
ART4NG   ART 4 -01 NG HEATER 43039
ART8LG   ART 8 - 01 " G" SERIES HEATER LPG
ART8NG   ART 8 - 01 "G" SERIES HEATER NG
ASDC604   45 COAXIAL FLUE ELBOW EVERFLO ST80
ASDC609   90 COAXIAL FLUE ELBOW EVERFLO ST80
ASKIT50   HORIZONTAL COAXIAL FLUE KIT ST150
ASKITSO   HORIZONTAL COAXIAL FLUE KIT 80/120
ASPC100   1MT COAXIAL FLUE EXTENSION PIPE ST80
ASPC50   0.5MT FLUE EXTENSION PIPE ST80
AVANTO   AVANTO ENGINE BRICK LINED 22211
AVANTOM   AVANTO ENGINE BLACK METAL LINING 22210
B11EIN   HEATSTAR BROODER NG
B11EIP   HEATSTAR BROODER LPG
B11FFN   HEATSTAR BROODER NG
B11FFP   HEATSTAR BROODER LPG
B11MTN   HEATSTAR BROODER NG
B11MTP   HEATSTAR BROODER LPG
B11PEN   HEATSTAR BROODER (BRINK) NAT GAS
B11PEP   HEATSTAR BROODER (BRINK) LPG
B11PPN   HEATSTAR BROODER NG
B11PPP   HEATSTAR BROODER LPG
B11SGN   HEATSTAR BROODER NG
B11SGP   HEATSTAR BROODER LPG
B11UVN   HEATSTAR BROODER NG
B11UVP   HEATSTAR BROODER LPG
B11VSN   HEATSTAR BROODER NG
B11VSP   HEATSTAR BROODER LPG
B12C01   3M HEAVY DUTY HOSE & SWIVEL
B12C02   3/8 GAS TAP
B12C03   CENTRALISED BROODER CONTROLLER
B4FFLP   HEATSTAR BROODER LPG
B4FFNG   HEATSTAR BROODER NG
B4MTLP   HEATSTAR BROODER LPG
B4MTNG   HEATSTAR BROODER NG
B4SGLP   HEATSTAR BROODER LPG
B4SGNG   HEATSTAR BROODER NG
B4VSLP   HEATSTAR BROODER LPG

 

 

dru
DRU is approved according to the latest ISO 9002 quality accreditation regulations. In addition, all DRU products are CE approved and subject to annual inspection by BSI.