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J120 

Low Pressure Cut Off Valve

Commissioning Instructions 

General Arrangement 

Parts List 

Maintenance Instructions 

For:  J120 Low Pressure Cut Off Valve ¾" - 2" 

Содержание J120

Страница 1: ...J120 Low Pressure Cut Off Valve Commissioning Instructions General Arrangement Parts List Maintenance Instructions For J120 Low Pressure Cut Off Valve 2 ...

Страница 2: ...mal operating pressure 6 Equalize pressure across valve as in 11 above 7 Commission downstream appliance s 8 Reduce inlet pressure to the required cut off pressure measured near to outlet 9 Slowly increase loading on the spring by turning the spring adjusting screw clockwise until the valve closes and flow stops 10 To check setting return inlet pressure to normal operating pressure 11 Turn off dow...

Страница 3: ...eneral Arrangement All sizes 19 21 20 18 34 22 23 24 17 18 19 26 11 15 Spring Adjustment Pre October 2000 Manual Reset Automatic Reset 13 14 37 16 25 38 39 27 28 29 30 33 31 32 12 35 9 10 8 7 6 5 4 3 2 1 36 40 ...

Страница 4: ... 010 Ï 1 J12006 010 Ï 1 21 CUT OFF VALVE SPINDLE BUSH J12006 024 1 J12006 024 1 22 CUT OFF VALVE SPINDLE J12006 020 1 J12006 020 1 23 SPLIT RING JRS20MZ 1 JRS20MZ 1 24 O RING SEAL JORM0031 16 Ï 1 JORM0031 16 Ï 1 25 LOADING SPRING SEE TABLE 1 SEE TABLE 1 26 SPRING ADJUSTING SCREW Coarse Thread J4806 097 1 J4806 097 1 27 VALVE SPINDLE JSA440IPNZ 1 JSA440IPNZ 1 28 TOP DIAPHRAGM PLATE J4806 003 1 J480...

Страница 5: ... J12006 010 Ï 1 J12006 010 Ï 1 21 CUT OFF VALVE SPINDLE BUSH J12008 006 1 J12008 006 1 J12008 006 1 22 CUT OFF VALVE SPINDLE J12006 020 1 J12006 020 1 J12006 020 1 23 SPLIT RING JRS20MZ 1 JRS20MZ 1 JRS20MZ 1 24 O RING SEAL JORM0031 16 Ï 1 JORM0031 16 Ï 1 JORM0031 16 Ï 1 25 LOADING SPRING SEE TABLE 1 SEE TABLE 1 SEE TABLE 1 26 SPRING ADJUSTING SCREW Coarse Thread J4806 097 1 J4806 097 1 J4806 097 1...

Страница 6: ...K2008 01 1 1 SK2009 01 2 Spring Range Part No Colour Code mbar w g 1 1 1 2 5 15 2 5 6 J4806 007 Yellow J4808 004 Red Yellow J4809 007 Dark Blue Yellow 12 5 25 5 10 J4806 004 Black J4808 007 Red Black J4809 004 Dark Blue Black 22 5 33 5 9 13 5 J4806 005 Orange J4808 008 Red Orange N A 31 41 12 5 16 5 J4806 006 Brown J4808 024 Red Brown N A ...

Страница 7: ...ews 29 19 Carefully remove secondary diaphragm 30 20 Remove valve spacer 5 together with valve disc 31 21 Dismantle cut off reset valve as follows If automatic reset option go to instruction 22 21i Unscrew cut off spindle bush 21 21ii Remove O ring seal 18 from spindle bush 21 21iii Remove split ring 23 from cut off valve spindle 22 21iv If cut off valve disc 20 needs replacing then remove from sp...

Страница 8: ...ttom plug 1 complete with O ring over centre shaft of valve spindle guide 3 into body 2 and screw tightly in position 17 Carefully replace top cover 10 on to body 2 with vent facing the outlet and secure with top cover screws 8 18 Insert loading spring 25 over spring location ridge in top diaphragm plate 28 19 NOTE If adjusting bush assembly 37 has been dismantled follow procedure if it has been l...

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