DISCO Non-Return Valves RK, PN 6 to PN 40 - …

1 DISCO Non-Return Valves RK, PN 6 to PN 40 Short overall length according to DIN EN 558-1, table 11, series 49 (=^ DIN 3202, part 3, series K4)RK 86 and RK 86 A Our Robust All-RounderRK 86 / RK 86 ADN 125 200 mmPressure/Temperature Ratings with metal-to-metal seatTypPN/ClassDNp / T / [bar] / [ C]RK 86PN 40/Class 30015 / / / 3502)RK 86 APN 40/Class 30015 / / / 5502)2)If the operating temperatures exceed 300 C intercrystalline corrosion may occur. Do not subject theequipment to operating temperatures higher than 300 C unless intercrystalline corrosion can beruled SeatSpringsmetal-to- EPDM FPM PTFE 3)4) without special Nimonic metal ( 40 up to ( 25 up to spring spring spring5) 150 C)3) 200 C)3) RK 86 XOOOOOOXRK 86A XOOOOOOX3) Observe pressure/temp.

2 Ratings of the equipment4)DN 15-100 190 C up to 250 C; DN 125-200 60 up to 200 C5) Required for temperatures above 300 CX : standardO : optionalEarthing connectionZ 86 / RK 86 ADN 15 100 mmBody MaterialL DType Nominal sizes DN EN reference ASTM equivalent 1)RK 86 Body 15 100 mm Chromium steel, A 743-CA6-NMValve disk AISI 316 Ti Body 125 200 mm GP240GH ( ) A 216 WCBPlug A182 F6 ARK 86A Body 15 100 mm A351 CF 8 MValve AISI 316 TiBody 125 200 mm A351 CF 8 MPlug A182 F316 L1)ASTM material similar to EN material. Observe different physical and chemical properties!Application and FeaturesTypePNApplication for liquids, gases and vapoursFeaturesRK 86PN 40 Class 300for industrial applicationspatented fixed centering lugs for easy alignment between flanges and optimum guidance of valve disk, earthing connection as standard, broad sealing surfaces, RK 86A approved by Bureau VeritasRK 86 Aparticularly suitable for low temperatures, aggressive fluids, boiler feedwater linesDeimensions and WeightsDN [mm]1520253240506580100125150200[inch]1/ 23/4111/411/2221/234568L[mm] 60 90106140Z min.

3 [mm]445364738396110128151 Z max.[mm]67768293104118136158186 PN 10/16 D[mm] 194220275PN 25 D[mm] 194226286PN 40 D[mm] 194226293 Class 125/150 D[mm] 194220275 Class 300 D[mm] 216251308 Weight [kg] 86 / RK 86 ADN 15 100 LDISCO Non-Return Valves RK, PN 6 to PN 40 Short overall length according to DIN EN 558-1, table 11, series 49 (=^ DIN 3202, part 3, series K4)Differential pressures at zero volume PressuresRK 86, RK 86 AThe curves given in the chart are valid for water at 20 C. To read the pressure drop for other fluids the equivalent water volume flowrate must be calculated and used in the graph V values indicated in the chart are applicable for spring-assisted Valves with horizontal flow and to Valves without spring installed in vertical pipes with upward W = V V W = Equivalent water volume flow in [l/s] or [m3/h] = Density of fluid (operating condition) in [kg/m3]V = Volume of fluid (operating condition)

4 In [l/s] or [m3/h] 1000DN Opening pressures [mbar]Direction of flowwithoutwith spring springXX V Y 15 10 5 20 10 5 25 10 5 32 12 5 40 13 9 5 50 14 5 65 15 10 5 80 16 5100 18 5 125 35 10 150 38 10 200 37 10 Pressure Drop Charts5040322520156580100125150200DN0,01 0,020,0020,030,30,050,0050,10,20,5[bar][ psi]10,50,20,10,052570,03102030406010020 0643210,60,40,30,20,10,060,040,030,02[l/ s][m3/h]1010070010,10,210203040601002003 00200030004006001000643210,60,4[ ]Druckverlust pVolumenstrom VwPressure drop pVolume flow VwRK 86, 86 A Required minimum volume flow V W for equipment without spring installed invertical pipes with upward flow.

5 Required minimum volume flow V W for equipment with standard spring andhorizontal drop pVolume flow V w