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<< This point just between open and closed is the setpoint. Thanks for using Screwfix Q&A. JT, This valve looks and feels well made and is simple to adjust. 59 0 obj 53 0 obj 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 endobj /Subtype /Type1 62 0 obj /Subtype /Type1 50 0 obj /FontWeight 400 /MC7 111 0 R /LastChar 150 >> >> /Sh3 82 0 R /Widths [ 278 ] 56 0 obj /FirstChar 32 /FontDescriptor 61 0 R /FirstChar 32 /Type /ExtGState It's been fitted for 2 weeks and no problems, but can't comment on the long term reliability. 
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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 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. /LastChar 32 0000015585 00000 n
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=lg$%Lg%_\YaBe*M2$$OIk'n3v~6e.%yo /ColorSpace << << xb``a``Wc`c`> ,Kf10L9",vsriqqsTL1)u4t,KO(vb_:|6 22|b`A&A&RO/tkXG *L8r'p2GOiwxO*^S']"'X ,Dne``nc,`TdxXz} L It was slightly longer than the manual valve it replaced, but was simple to fit and performs as expected. $ ]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 >> A simple means of ensuring adequate flow through boilers which require a bypass. /MC3 103 0 R /Type /ExtGState /Encoding /WinAnsiEncoding 48 0 obj /SM 0.02 %PDF-1.7 % 0000010158 00000 n /Subtype /TrueType >> 0000018504 00000 n /Encoding /WinAnsiEncoding endobj 0000003783 00000 n /FirstChar 32 0000001283 00000 n endobj 0000022689 00000 n endstream /L 279 0000003540 00000 n
/CropBox [ 0 0 419.55 595.3 ] /CapHeight 0 /BaseFont /MMBHLF+ArialNarrow /Descent -211 z~|^MFQEQF``I]PN:8}8NmC=-2.xv{NF>$je/8bhIL7. 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. /BaseFont /MMBIGE+Frutiger-Light 97 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 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 117 0 obj 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 /Type /ExtGState <. >> `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 >> endobj /Encoding /WinAnsiEncoding << 64 0 obj /Subtype /TrueType /BaseFont /MMBGOG+Arial-BoldMT /BG2 /Default /Parent 40 0 R /Ascent 935 500 0 0 556 556 0 0 333 389 333 556 444 778 0 444 ] /Length 289 << 0000004082 00000 n %PDF-1.6 % << 51 0 obj xb``b````a` @1V 0qn #S!s6> vZP 7#'#bI endobj endobj /LastChar 121 bvseo-msg: BV SEO Content for this product did not include verbose reviews.. /BG2 /Default /Type /FontDescriptor /Filter /FlateDecode 0000002363 00000 n /MC8 113 0 R hbbd``b`N@m@`yL- V" @] !$W$`0 &!21URm6HI=HHXz@BdJ!"Fw Ig Qy /Encoding /WinAnsiEncoding /F2 56 0 R 3 ,EUBBwe~-. /I 319 /Shading << << /PageLabels 38 0 R /FontName /MMBHLF+ArialNarrow 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 Having worked at Danfoss for 10 years, Greg managed the Danfoss Underfloor Heating division in the UK. View all: EssentialsFlues & Boiler Accessories. >> 0000003244 00000 n hc v1v 1R!v n!#^Io0fi& b FU 700;SQ" /Sh4 84 0 R /MC1 99 0 R >> stream hb``a``z6g 001Gs"vfGGG7|,.00[. \*!X,4"^A_bq5MdQ>Cs/ /Pages 40 0 R /FontFamily (Arial Narrow) >> %%EOF /FontDescriptor 60 0 R A.K.C. >> Hi /MC2 101 0 R 143 0 obj /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 /OP false /GS2 63 0 R /Cs9 59 0 R /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 /Type /Font << /FirstChar 32 0000032843 00000 n /SM 0.02 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. /Widths [ 278 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 0 0 0 0 0 0 0 0 >> endobj /LastChar 121 /SA true << /UCR2 /Default This is the pump minimum flow or defined low flow rate, Measure the flow rate on the partner valve. /SA false >>
47 0 obj /op true 96 0 obj [ /Separation /Honeywell#20Grau /DeviceCMYK 85 0 R ] a low-capacity gas boiler or tocontrol the differential pressure in a central heating system. 0000001112 00000 n /Subtype /TrueType 0 /FirstChar 49 endobj SR{Afv7v!HdF{ARJUJkgkN2TiT4]~*J!uQ!TD*VRcQU)FFY"q}s2YPT31VLB&Vq#e4gQbzj )a{B-g(lQ%S(1LqD t7(e"1"SbkcHJD'3|olz>|B$- endobj /Flags 32 /Metadata 44 0 R
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<< 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. /Sh2 80 0 R << 120C, Experts within Heating Greg Tracy has been working in the HVAC industry for the last 15 years. /FontFamily (Arial Narrow) Hello Maaartin, /FontBBox [ -182 -307 1000 1086 ] <>stream >> /BaseFont /MMBHAG+Arial endobj 0000022653 00000 n /BaseFont /MMBHKF+ArialNarrow-Bold >> /MC6 109 0 R /Type /Font ), Works as required. /FontStretch /Condensed /CapHeight 718 %PDF-1.4 % /Type /Font /Subtype /Type1 /SM 0.02 /Names 48 0 R endstream wkQ+\eSofI3/ln6o~/xhpm$E+o+:BIw'dJx NirSaex;8Grq;K.y b1luI9'\
endobj 0 0 0 456 ] /Type /Font /FontDescriptor 91 0 R ` # << 52 0 obj /Widths [ 278 0 0 0 0 0 0 0 0 0 0 0 0 333 278 0 556 556 556 0 556 556 0 556 0 0 0 0 0 0 0 << /MC4 105 0 R 501 0 319 456 273 501 456 638 0 456 ] trailer 125 0 obj 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 >> /BaseFont /MMBIFD+Frutiger-Roman /FontDescriptor 95 0 R endobj /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 0000030173 00000 n /LastChar 118 With a straight valve, it does not matter if installed vertically or horizontally. endobj Hi Mengineer, endobj %%EOF /Type /Font endobj /Flags 32 46 0 obj /op false %PDF-1.4 106 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 HWr}h+GR^y@q(1I{s @-M7ww>mw7`n6e&fZLaOu 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 /FontFile2 75 0 R 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 >> xbb``b`` % endobj 145 0 obj<>stream 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)]. 55 0 obj /StemV 112 /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 /Subtype /TrueType 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. >> /OPM 1 /B 295 <> 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 /FirstChar 32 0000007345 00000 n Our warehouse staff have advised that the width (length from end to end) of this valve is 73mm, /OP false 57 0 obj 'o2{,Zn{z /FontDescriptor 89 0 R << 0000033414 00000 n endstream endobj 144 0 obj<>/Size 119/Type/XRef>>stream }~6,]k{.Bn|>?u;k>g
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&=cv3YAcm%y"YnerBHh^F3a6EyBZ'sPe4X9T#/luA7"{rCjIi"@4 /Descent -211 /TT6 54 0 R /UCR2 /Default /F3 57 0 R /FontStretch /Condensed /StemV 0 /Properties << << /Type /Font 0000003291 00000 n /Encoding /WinAnsiEncoding /Contents [ 65 0 R 66 0 R 67 0 R 68 0 R 69 0 R 70 0 R 72 0 R 73 0 R 118 0 R ] /Resources 50 0 R /F4 71 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 endobj >> If you have an excess, reduce the flow rate on the partner valve. If an installation schematic isrequiredplease contact your Danfoss representative, Set up the pump and system to deliver the conditions where bypassing should occur. xref /Type /Font 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 % startxref /ItalicAngle 0
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