/UCR2 /Default /FontStretch /Condensed >> /EmbeddedFiles 41 0 R 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 /F3 57 0 R 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. /Filter /FlateDecode /Widths [ 228 273 0 0 0 0 0 0 273 273 0 0 228 0 228 0 456 456 456 456 456 456 456 0 0 0 273 49 0 obj %%EOF

xb``b````a` @1V 0qn #S!s6> vZP 7#'#bI << ), Works as required. du145 0000002944 00000 n endstream AVDO is a self-acting constant flow control primarily used either to maintain minimum flow rates through e.g. << << endstream ` # 0000032843 00000 n a low-capacity gas boiler or tocontrol the differential pressure in a central heating system. /F4 71 0 R 0000000016 00000 n 0000033414 00000 n /OPM 1 /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 /FontFamily (Arial Narrow) /MediaBox [ 0 0 419.55 595.3 ] /FontBBox [ -137 -307 1000 1109 ] /FontDescriptor 93 0 R 50 0 obj /ItalicAngle 0

56 0 obj hbbd```b``^ "l~)DJH R`:"HnE"9A$+Xd"|$cD:"YE&fHU` 3}c "g/$Hg6 f3+Hkaf kb 0|~]8J$30^ 0 Ab endstream endobj startxref 0 %%EOF 203 0 obj <>stream >> 0 120C, Experts within Heating Greg Tracy has been working in the HVAC industry for the last 15 years. /SA false 46 0 obj This point just between open and closed is the setpoint. 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 /FirstChar 32 /FontDescriptor 95 0 R /Type /Font 0000026338 00000 n IoHUxF0r01K.

/MC5 107 0 R endobj /BaseFont /MMBHKF+ArialNarrow-Bold /BG2 /Default Ideal for sealed systems to protect pumps when zone valves close. /Metadata 44 0 R

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0000001112 00000 n /LastChar 150 Our warehouse staff have advised that the width (length from end to end) of this valve is 73mm, 97 0 obj 62 0 obj /ItalicAngle 0 /FontStretch /Condensed /FirstChar 32 410 228 456 410 592 410 410 410 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 182 182 /Type /Catalog 0000004005 00000 n /Widths [ 278 ] 0000007345 00000 n hb```" qS]RY[bE$>:nzKcSz[j=d>_ccOq40pt00v)0(H p H %?34:V>RXBTANB#DXNdVj2mzN S\`1` `JN a%ZX3bw2 :KO

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/ProcSet [ /PDF /Text ] %PDF-1.4 48 0 obj 0 0 0 456 ] << /ColorSpace << /FontFile2 76 0 R << /Type /Font 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. 0000018504 00000 n /Sh2 80 0 R /Sh4 84 0 R `q;0-xl M`A: X,"`aIaZE$V`OJtf 7Jg xP^%1'pdoAQ>: gE9k--}(\AO@]'0DBPC,}Yf"2`L `3eb)" (a!sAmR`A-rhX lod xb``a``Wc`c`> ,Kf10L9",vsriqqsTL1)u4t,KO(vb_:|6 22|b`A&A&RO/tkXG *L8r'p2GOiwxO*^S']"'X ,Dne``nc,`TdxXz} L >>

<< /MC6 109 0 R >> xbb``b`` % << endobj bvseo-msg: BV SEO Content for this product did not include verbose reviews.. 106 0 obj <> endobj 153 0 obj <>/Filter/FlateDecode/ID[]/Index[106 98]/Info 105 0 R/Length 187/Prev 924091/Root 107 0 R/Size 204/Type/XRef/W[1 3 1]>>stream 0000003291 00000 n No long term test yet but have used before and had no call backs, loc_en_GB, sid_4747V, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)], loc_en_GB, sid_4747V, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]. 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. endobj /Length 6385

0000012724 00000 n /OPM 1 /Widths [ 556 0 0 556 556 0 0 0 0 0 0 0 0 0 0 0 0 0 0 722 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 /FirstChar 32 << q{ZPJI)t{E/Ov=xyMh}}|{X.>WJzy|-"E7tIytgr2/*@mdcC>xbt6i;Wp:\l4P7?dE;8b-.7U;yQL>J=HY,FGW6N;X!P\_hb*? D=,50&`@j*_yT$k dh^qcG$7ZagCnol\U&;1_&?s#poRqeH=R}xl[8W}8JRB~2!/i^lD ZI"tU3`C+2K|wxc@s%?_YzW,Ka"IS9yC}C!(QP 5 TTl0L@ qzTA H$aFVy^jh 0o `.r%s,mbHQQuQI,y=ll27\3rN/P#=e07534Bx(r'bpG\Ov-\'Y pbq2PG_(uVOCHjb*6 `!y= t34 endobj /FontName /MMBHLF+ArialNarrow << /OP false /LastChar 118 /FontFile2 75 0 R 0000001557 00000 n 0000002363 00000 n /MC4 105 0 R 60 0 obj >> 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. /FontDescriptor 89 0 R /S 100 stream 0 0 0 667 0 722 667 0 778 722 0 0 0 0 0 722 0 0 0 722 0 0 722 0 0 0 0 0 0 0 0 0 0 trailer 0000003783 00000 n 'o2{,Zn{z 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 556 0 611 0 0 0 0 0 0 /Pages 40 0 R A simple means of ensuring adequate flow through boilers which require a bypass. /SM 0.02 /CapHeight 0 >> /Type /Font /Rotate 0 >> 0000015585 00000 n /Flags 32 59 0 obj It's been fitted for 2 weeks and no problems, but can't comment on the long term reliability.

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. startxref /MC7 111 0 R /LastChar 121 /SA true /SM 0.02

/op true endobj >> hb``a``z6g 001Gs"vfGGG7|,.00[. \*!X,4"^A_bq5MdQ>Cs/ wkQ+\eSofI3/ln6o~/xhpm$E+o+:BIw'dJx NirSaex;8Grq;K.y b1luI9'\ /FirstChar 49 P1u`7C =P8 3}pbU^p\Z-Ukc]?n===W#d`MSO&DB1P@Oa ydMRR@. >> << /MC3 103 0 R }~6,]k{.Bn|>?u;k>g 57 0 obj /LastChar 121 0 0 0 547 547 592 592 0 501 0 592 228 0 0 0 0 0 0 547 0 592 547 501 592 547 0 0 0 95 0 obj endobj /Encoding /WinAnsiEncoding Hi Mengineer, 125 0 obj ?z',QAeJe=5tECei /LastChar 121 145 0 obj<>stream << XNc]O2$P[ CSIJj&a\NRN4!4Hvj+'6Zu$~y4da= b z}6&=BpqO&XSGz~|E /SA false endstream endobj 120 0 obj<>/Outlines 13 0 R/Metadata 28 0 R/PieceInfo<>>>/Pages 27 0 R/PageLayout/OneColumn/StructTreeRoot 30 0 R/Type/Catalog/LastModified(D:20090902145415)/PageLabels 25 0 R>> endobj 121 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>>>/Type/Page>> endobj 122 0 obj<> endobj 123 0 obj<> endobj 124 0 obj<> endobj 125 0 obj[/Indexed 137 0 R 161 141 0 R] endobj 126 0 obj<> endobj 127 0 obj<> endobj 128 0 obj<> endobj 129 0 obj<> endobj 130 0 obj<>stream View all: EssentialsFlues & Boiler Accessories. <> /Cs8 58 0 R /B 295 *hi{:j !=@H{Z3\&i,p]6BKc:-9p{|_vpN#(e! stream /MC1 99 0 R /Font << 0000003540 00000 n 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.

endobj Copyright Screwfix Direct Ltd 2022 Company Registration no: 3006378 VAT Registered: 232555575. /TT3 52 0 R /Ascent 935 endobj endobj /GS4 116 0 R /FontBBox [ -182 -307 1000 1086 ] << /op false /TT2 51 0 R /CapHeight 718 0000004082 00000 n 63 0 obj With a straight valve, it does not matter if installed vertically or horizontally. /Subtype /TrueType <>stream /TT5 53 0 R /Subtype /Type1 endobj /StemV 112 /StemV 0 52 0 obj >> 500 0 0 556 556 0 0 333 389 333 556 444 778 0 444 ] %PDF-1.6 % %PDF-1.4 % 0000022653 00000 n 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 500 0 0 0 500 0 556 0 222 0

endobj 3 ,EUBBwe~-. << /BaseFont /MMBGOG+Arial-BoldMT 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. /TT6 54 0 R

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0000003244 00000 n 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 <>>> 0000001937 00000 n is dimensioned for pressure stage PN 10,max. 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 /GS1 62 0 R Hi /GS2 63 0 R /BaseFont /MMBIFD+Frutiger-Roman 58 0 obj 0 0 0 0 0 556 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 500 ] 501 0 319 456 273 501 456 638 0 456 ] 117 0 obj /FirstChar 32 611 0 0 0 389 0 0 0 0 0 0 556 ] /Descent -211 /Encoding /WinAnsiEncoding 65 0 obj /F1 55 0 R endobj

/Type /FontDescriptor << &=cv3YAcm%y"YnerBHh^F3a6EyBZ'sPe4X9T#/luA7"{rCjIi"@4 722 ] >> /LastChar 85 /FontWeight 400 /Encoding /WinAnsiEncoding /Properties << /Type /Page >> Hello Maaartin, If you have an excess, reduce the flow rate on the partner valve. z~|^MFQEQF``I]PN:8}8NmC=-2.xv{NF>$je/8bhIL7. /Subtype /TrueType /Resources 50 0 R endobj /FontWeight 700 If an installation schematic isrequiredplease contact your Danfoss representative, Set up the pump and system to deliver the conditions where bypassing should occur. endobj xref /Subtype /Type1 Thank You

endobj >> /Sh1 78 0 R 0 0 0 0 0 0 0 456 456 410 456 456 228 456 456 182 0 410 182 683 456 456 456 456 273 This is the pump minimum flow or defined low flow rate, Measure the flow rate on the partner valve. /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 endstream endobj 144 0 obj<>/Size 119/Type/XRef>>stream Having worked at Danfoss for 10 years, Greg managed the Danfoss Underfloor Heating division in the UK. /Type /Font /XHeight 515 hbbd``b`N@m@`yL- V" @] !$W$`0 &!21URm6HI=HHXz@BdJ!"Fw Ig Qy /FirstChar 32 /UCR2 /Default /Filter /FlateDecode /MC2 101 0 R /FontDescriptor 91 0 R It was slightly longer than the manual valve it replaced, but was simple to fit and performs as expected. /Type /Font /FontDescriptor 60 0 R A.K.C. /Ascent 935 $ ]bg JD@R,E\ M (UeQO.KJ2+D ^5dN@@#V An h z d J +z ) Y44X0m@!@3Ydkd.,&B .hT{)V`$H5r9"l~>AnM5A[4~PLallD'rT /Length 289 HWr}h+GR^y@q(1I{s @-M7ww>mw7`n6e&fZLaOu %PDF-1.7 % h[io9+ia! /Subtype /TrueType %%EOF endobj endstream /op false /SM 0.02 119 27 >> /FontFamily (Arial Narrow) /OPM 1 /Encoding /WinAnsiEncoding << >> 51 0 obj >> /BaseFont /MMBHAG+Arial >> >> /BaseFont /MMBHLF+ArialNarrow hc v1v 1R!v n!#^Io0fi& b FU 700;SQ" [ /Separation /Honeywell#20Grau /DeviceCMYK 85 0 R ] =lg$%Lg%_\YaBe*M2$$OIk'n3v~6e.%yo 0

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<<

/Subtype /TrueType endobj 64 0 obj Martin. startxref

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% Thank you for using Screwfix Q&A. /MC8 113 0 R 0000030173 00000 n Thanks for using Screwfix Q&A. JT, This valve looks and feels well made and is simple to adjust. /I 319 96 0 obj /LastChar 32 /OP false /Cs9 59 0 R << /PageLabels 38 0 R 0000010158 00000 n >> /BaseFont /MMBIFC+Frutiger-Bold /Type /ExtGState 119 0 obj <> endobj >>



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