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endobj Having worked at Danfoss for 10 years, Greg managed the Danfoss Underfloor Heating division in the UK. Greg TracySend Greg an email+44 1234364621, Bypass valve are to be selected on the required bypass flow rate and opening pressure loss, The valves shall be capable of the required opening pressure within the published spring range, The valves shall be installed with a partner valve to enable bypass flow measurement and flow limiting if necessary, The partner valves shall be fixed orifice in DN15-50 and variable orifice in DN50 (high flow) to DN400, The valve shall be installed between flow and return in accordance with the flow direction shown on the valve casting, The partner valve shall be on the return, just after the bypass valve, and within the impulse tube loop. hbbd``b`N@m@`yL- V" @] !$W$`0 &!21URm6HI=HHXz@BdJ!"Fw Ig Qy 
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Thank You
>>
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b1luI9'\ endobj /Widths [ 278 ] /Filter /FlateDecode Thanks for using Screwfix Q&A. JT, This valve looks and feels well made and is simple to adjust. 611 0 0 0 389 0 0 0 0 0 0 556 ] 22mm bypass heating valve automatic central /Type /Font 
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>> It's been fitted for 2 weeks and no problems, but can't comment on the long term reliability. /FirstChar 32 /Type /Font P1u`7C =P8 3}pbU^p\Z-Ukc]?n===W#d`MSO&DB1P@Oa ydMRR@. endobj 0000036933 00000 n
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/Ascent 935 My system shouldn't ever 'need' a bypass as it's a W valve system with one rad with no trv, so the manual bypass was very inefficient but I didn't want to just shut it off.
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With a straight valve, it does not matter if installed vertically or horizontally. /Widths [ 228 0 0 0 0 0 0 0 273 273 0 0 228 0 228 0 0 456 456 456 456 456 0 0 0 0 0 0 0 0 
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<< 22mm <>>> It was slightly longer than the manual valve it replaced, but was simple to fit and performs as expected. >> endobj %%EOF << /Subtype /Type1 /Filter /FlateDecode /Length 6385 0000000016 00000 n /FontName /MMBHKF+ArialNarrow-Bold If you have an excess, reduce the flow rate on the partner valve. /Font << View all: EssentialsFlues & Boiler Accessories. ?z',QAeJe=5tECei 119 0 obj <> endobj 0 0 0 456 ] HWr}h+GR^y@q(1I{s @-M7ww>mw7`n6e&fZLaOu /MC7 111 0 R /BaseFont /MMBHAG+Arial Hello Maaartin, Copyright Screwfix Direct Ltd 2022 Company Registration no: 3006378 VAT Registered: 232555575. /BaseFont /MMBIFD+Frutiger-Roman Martin. /FontBBox [ -137 -307 1000 1109 ] 95 0 obj A simple means of ensuring adequate flow through boilers which require a bypass. /Cs8 58 0 R /Encoding /WinAnsiEncoding >> /CropBox [ 0 0 419.55 595.3 ] 722 ]
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For the last 5 years he has been working and managing the Danfoss HVAC division with consultants and contractors on some of Londons most prestigious Commercial buildings. /FirstChar 32 bypass valve automatic 22mm angled water /Parent 40 0 R 410 228 456 410 592 410 410 410 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 182 182 a low-capacity gas boiler or tocontrol the differential pressure in a central heating system. /MC6 109 0 R 0 0 0 547 547 592 592 0 501 0 592 228 0 0 0 0 0 0 547 0 592 547 501 592 547 0 0 0 z~|^MFQEQF``I]PN:8}8NmC=-2.xv{NF>$je/8bhIL7. /MC4 105 0 R /StemV 112 97 0 obj startxref 55 0 obj /Shading << %PDF-1.7 % HWnF}}a l ^e-Xyple`hoUErl Gu?_6Fvy~E'o"ovR_(kz7?o/WS~n_pxxurisu\A>]5WNg#]P^>B5t^i]q.6(JZ$$:;.6qm7s$M%EH|,t!^> H_v/]_^zb[fex#(yJ]/fFsS!Et_FQ~"Xm~c/=~.>qbK9^+Q_`C[,U3o=~he>dRQ2`Nn/sc?k{||2w>%K(BS~ S@OL /Type /Font
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Our warehouse staff have advised that the width (length from end to end) of this valve is 73mm,
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120C, Experts within Heating Greg Tracy has been working in the HVAC industry for the last 15 years.
This is the pump minimum flow or defined low flow rate, Measure the flow rate on the partner valve. 501 0 319 456 273 501 456 638 0 456 ]
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This point just between open and closed is the setpoint. 0 0 479 0 0 0 592 592 592 592 0 501 0 0 228 0 0 501 0 592 638 547 0 592 547 501 592 If an installation schematic isrequiredplease contact your Danfoss representative, Set up the pump and system to deliver the conditions where bypassing should occur. 47 0 obj >> >> Record the flow rate in the commissioned condition, Turn the spring setting mechanism on the valve until the calculated opening pressure loss is set, If the valve is open, turn the mechanism until it is just closed.
Record the pressure setting as the actual opening pressure loss, Open the system to design flow rate and operate as normal, The valve will remain close in high load conditions and open in low flow conditions. Ideal for sealed systems to protect pumps when zone valves close. 22mm afdichtings reparatiemiddelen toolstation
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<< /F1 55 0 R This valve has stopped all the flow through the bypass in normal use (I set it to 0.25 bar having done the sums for my system. 
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endobj Having worked at Danfoss for 10 years, Greg managed the Danfoss Underfloor Heating division in the UK. Greg TracySend Greg an email+44 1234364621, Bypass valve are to be selected on the required bypass flow rate and opening pressure loss, The valves shall be capable of the required opening pressure within the published spring range, The valves shall be installed with a partner valve to enable bypass flow measurement and flow limiting if necessary, The partner valves shall be fixed orifice in DN15-50 and variable orifice in DN50 (high flow) to DN400, The valve shall be installed between flow and return in accordance with the flow direction shown on the valve casting, The partner valve shall be on the return, just after the bypass valve, and within the impulse tube loop. hbbd``b`N@m@`yL- V" @] !$W$`0 &!21URm6HI=HHXz@BdJ!"Fw Ig Qy >> /FirstChar 32 endobj 0000004005 00000 n 'o2{,Zn{z >> /Widths [ 278 0 0 0 0 0 0 0 0 0 0 0 0 0 278 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000022653 00000 n Hi Mengineer,
Thank You
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b1luI9'\ endobj /Widths [ 278 ] /Filter /FlateDecode Thanks for using Screwfix Q&A. JT, This valve looks and feels well made and is simple to adjust. 611 0 0 0 389 0 0 0 0 0 0 556 ] 22mm bypass heating valve automatic central /Type /Font xref
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>> It's been fitted for 2 weeks and no problems, but can't comment on the long term reliability. /FirstChar 32 /Type /Font P1u`7C =P8 3}pbU^p\Z-Ukc]?n===W#d`MSO&DB1P@Oa ydMRR@. endobj 0000036933 00000 n
bypass salus H$$=Fh BE
" QIQ%*U|9#]@?2ZIYz#XlkBji2U2,bp;D(|v\8 /Subtype /TrueType /MC9 115 0 R endobj /MC8 113 0 R /FontDescriptor 95 0 R 48 0 obj /Ascent 935 My system shouldn't ever 'need' a bypass as it's a W valve system with one rad with no trv, so the manual bypass was very inefficient but I didn't want to just shut it off.
/OP false /GS3 64 0 R /LastChar 121 500 0 0 556 556 0 0 333 389 333 556 444 778 0 444 ] xbb``b`` %
With a straight valve, it does not matter if installed vertically or horizontally. /Widths [ 228 0 0 0 0 0 0 0 273 273 0 0 228 0 228 0 0 456 456 456 456 456 0 0 0 0 0 0 0 0 >> 0000002944 00000 n
/SM 0.02 bypass valve automatic angle valves heating system cart <. /MediaBox [ 0 0 419.55 595.3 ] /BG2 /Default advantay >> /FontFamily (Arial Narrow) << 22mm <>>> It was slightly longer than the manual valve it replaced, but was simple to fit and performs as expected. >> endobj %%EOF << /Subtype /Type1 /Filter /FlateDecode /Length 6385 0000000016 00000 n /FontName /MMBHKF+ArialNarrow-Bold If you have an excess, reduce the flow rate on the partner valve. /Font << View all: EssentialsFlues & Boiler Accessories. ?z',QAeJe=5tECei 119 0 obj <> endobj 0 0 0 456 ] HWr}h+GR^y@q(1I{s @-M7ww>mw7`n6e&fZLaOu /MC7 111 0 R /BaseFont /MMBHAG+Arial Hello Maaartin, Copyright Screwfix Direct Ltd 2022 Company Registration no: 3006378 VAT Registered: 232555575. /BaseFont /MMBIFD+Frutiger-Roman Martin. /FontBBox [ -137 -307 1000 1109 ] 95 0 obj A simple means of ensuring adequate flow through boilers which require a bypass. /Cs8 58 0 R /Encoding /WinAnsiEncoding >> /CropBox [ 0 0 419.55 595.3 ] 722 ]
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For the last 5 years he has been working and managing the Danfoss HVAC division with consultants and contractors on some of Londons most prestigious Commercial buildings. /FirstChar 32 bypass valve automatic 22mm angled water /Parent 40 0 R 410 228 456 410 592 410 410 410 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 182 182 a low-capacity gas boiler or tocontrol the differential pressure in a central heating system. /MC6 109 0 R 0 0 0 547 547 592 592 0 501 0 592 228 0 0 0 0 0 0 547 0 592 547 501 592 547 0 0 0 z~|^MFQEQF``I]PN:8}8NmC=-2.xv{NF>$je/8bhIL7. /MC4 105 0 R /StemV 112 97 0 obj startxref 55 0 obj /Shading << %PDF-1.7 % HWnF}}a l ^e-Xyple`hoUErl Gu?_6Fvy~E'o"ovR_(kz7?o/WS~n_pxxurisu\A>]5WNg#]P^>B5t^i]q.6(JZ$$:;.6qm7s$M%EH|,t!^> H_v/]_^zb[fex#(yJ]/fFsS!Et_FQ~"Xm~c/=~.>qbK9^+Q_`C[,U3o=~he>dRQ2`Nn/sc?k{||2w>%K(BS~ S@OL /Type /Font
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<< /BaseFont /MMBHLF+ArialNarrow endobj >> /CapHeight 0 is dimensioned for pressure stage PN 10,max. Our warehouse staff have advised that the width (length from end to end) of this valve is 73mm,
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120C, Experts within Heating Greg Tracy has been working in the HVAC industry for the last 15 years.
This is the pump minimum flow or defined low flow rate, Measure the flow rate on the partner valve. 501 0 319 456 273 501 456 638 0 456 ]
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S\`1` `JN a%ZX3bw2 :KO /Encoding /WinAnsiEncoding This point just between open and closed is the setpoint. 0 0 479 0 0 0 592 592 592 592 0 501 0 0 228 0 0 501 0 592 638 547 0 592 547 501 592 If an installation schematic isrequiredplease contact your Danfoss representative, Set up the pump and system to deliver the conditions where bypassing should occur. 47 0 obj >> >> Record the flow rate in the commissioned condition, Turn the spring setting mechanism on the valve until the calculated opening pressure loss is set, If the valve is open, turn the mechanism until it is just closed.
Record the pressure setting as the actual opening pressure loss, Open the system to design flow rate and operate as normal, The valve will remain close in high load conditions and open in low flow conditions. Ideal for sealed systems to protect pumps when zone valves close. 22mm afdichtings reparatiemiddelen toolstation /S 100 /TT6 54 0 R endstream 125 0 obj >> /Type /FontDescriptor endobj b/Y L9>r m"2( *21 endstream endobj 107 0 obj <> endobj 108 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC]/Properties<>/Shading<>/XObject<>>>/Rotate 0/TrimBox[30 30 625.276 871.89]/Type/Page>> endobj 109 0 obj <>stream /Encoding /WinAnsiEncoding << /Names 48 0 R 3 ,EUBBwe~-.
117 0 obj /F3 57 0 R /FontDescriptor 91 0 R /Type /ExtGState bvseo-msg: BV SEO Content for this product did not include verbose reviews.. /Type /Catalog /FirstChar 32 /op false <>/Filter/FlateDecode/ID[<5B19FC880E19AA4D9F8EF91EDEB3396D>]/Index[95 49]/Info 94 0 R/Length 125/Prev 1282143/Root 96 0 R/Size 144/Type/XRef/W[1 2 1]>>stream [ /Separation /Honeywell#20Grau /DeviceCMYK 85 0 R ] /Properties << << /SA false endobj 59 0 obj $ ]bg JD@R,E\ M (UeQO.KJ2+D ^5dN@@#V An h z d J +z ) Y44X0m@!@3Ydkd.,&B .hT{)V`$H5r9"l~>AnM5A[4~PLallD'rT ` #
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64 0 obj /Type /ExtGState << /F1 55 0 R This valve has stopped all the flow through the bypass in normal use (I set it to 0.25 bar having done the sums for my system. /Encoding /WinAnsiEncoding stream /Metadata 44 0 R /Subtype /TrueType /ExtGState << /BaseFont /MMBIGE+Frutiger-Light /Flags 32 /B 295 /op true /UCR2 /Default >> 0000032843 00000 n
bypass 22mm valve automatic topline ie larger bypass valve automatic operated pressure /MC2 101 0 R /LastChar 118 >> 22mm bypass altecnic caleffi glw plumbase trailer /LastChar 150
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/Pages 40 0 R 49 0 obj 547 0 0 0 0 0 0 0 0 0 0 456 501 456 501 456 0 501 501 228 228 456 228 729 501 501 /Type /Font endobj du145 Apart from the direction of the water flow through the valve itself does it matter which way the valve is mounted on the pipe work, vertical or horizontal. 0000026338 00000 n