Quick closing oil drain valve, type QDV 15 REFRIGERATION AND AIR CONDITIONING. Technical leaflet
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1 Quick closing oil drain valve, type QDV 15 REFRIGERATION AND AIR CONDITIONING Technical leaflet
2 Introduction QDV is a quick closing oil drain valve, designed particularly for draining oil from systems containing refrigerant (ammonia) under pressure. The valve will close immediately on release of the handle, thus protecting user and environment against unne cessary refrigerant leaks. The valve should as a rule be installed as illustrated in fig. 1. In order to pre vent hydraulic pressure building up between the stop valve and the QDV an integral relief device is included as part of the cone arrangement, which will open at approx. 25 bar g (363 psig). QDV is designed to meet the safety demands specified by national and international authorities within industrial refrigeration. Fig. 1 Features QDV is generaly used with R717 (ammonia) but the valve is also applicable to all other common non flammable refrigerants and non corrosive gases/liquids dependent on sealing material compatibility Meets the safety demands within industrial refrigeration Handle can be positioned 360 Built-in integral relief device opening over 25 bar g (proventing hydraulic pressure building up between stop valve and QDV). Can be supplied together with a stop valve for quick on site mounting Max. operating pressure: 40 bar g (580 psi g). Temperature range: 50/+150 C ( 58/+302 F). Classification: To get an updated list of certification on the products please contact your local Danfoss Sales Company. 2 DKRCI.PD.KL0.A4.02 / 520H1199 Danfoss A/S (AC-AKC / frz),
3 Design Connections Available with the following connections: Inlet: Welding DIN (EN 10220) ½ in. FPT 3/4 in. FPT Outlet: G 3/4 in. pipe thread (ISO 228/1) ½ in. FPT 3/4 in. FPT Optional extras for outlet: Welding nipple DIN (EN 10220) Hose connection Other types of connection are available on request. QDV - SVA combinations Combinations of the QDV together with a dedicated SVA have been established for easy selection. Please study page 6 to find the code numbers for these combinations. Installation For further information refer to installation instruction for QDV. Technical data Refrigerants QDV is generally used with R717 (ammonia) but the valve is also applicable to all other common non flammable refrigerants and non corrosive gases/liquids dependent on sealing material compatibility. QDV is a backpressure dependent valve. If any tube or hose is mounted on the outlet of the QDV it has to be calculated to prevent blackpressure building up when relieving. For further information please see installation instruction for QDV. Flammable hydrocarbons are not recommended, for further information please contact your local Danfoss Sales Company. Temperature range 50/+150 C ( 58/+302 F). Pressure The valve is designed for: Maximum operating pressure of 40 bar g (580 psi g) Danfoss A/S (AC-AKC / frz), DKRCI.PD.KL0.A4.02 / 520H1199 3
4 Material specification QDV 15 No. Part Material DIN/EN ISO ASTM 1 Housing Steel G20Mn5QT EN LCC A352 2 Bonnet Stainless steel X110CrNi 3 Spindle/Cone Stainless steel X110CrNi S S Type /13 Type /13 AISI 303 AISI Spring Steel 11SMn30 Type 2 Grade Wear ring EN10087 R683/9 A29 6 O-ring Cloroprene Hose connection for outlet No. Part Material 12a O-rings Cloroprene (Neoprene) 12c Stub for hose Steel 12d Union nut Steel Welding nipple connection for outlet No. Part Material 13a Al-packing Aluminium 13b Welding nipple Steel 13c Union nut Steel 4 DKRCI.PD.KL0.A4.02 / 520H1199 Danfoss A/S (AC-AKC / frz),
5 Connections ØD 1 ØD 3 ØD 4 ØD 5 QDV 15 DIN 15 mm in ØD 7 ØD 8 QDV 15 ½" FPT mm in ØD 7 ØD 8 QDV 15 3/4" FPT mm in ØD 1 ØD 3 ØD 8 QDV 15 DIN 15 mm in FPT 1/2" 13.5 T OD T kv-straight m 3 /h Cv-straight USgal/min OD SVA-ST DIN 15 mm in FPT 1/2" 13.5 T ID SVA-ST SOC ½ in. ID T L k v-straight m 3 /h mm in Cv-straight USgal/min L Danfoss A/S (AC-AKC / frz), DKRCI.PD.KL0.A4.02 / 520H1199 5
6 Dimensions QDV 15 (stand alone) QDV 15 mounted on SVA valve Valve size A C max E QDV 15 mm in Ordering How to order The table below is used to identify the valve required. Type Inlet Outlet Code no. QDV 15 DN 15 DN 15 G 3/4 in. 148H3272 QDV 15 ½ in. FPT ½ in. FPT ½ in. FPT 148H3273 QDV 15 3 / 4 in. FPT 3/4 in. FPT 3/4 in. FPT 148H3274 QDV 15 DN 15 + SVA-ST DN 15 H-WHEEL* DN 15 G 3/4 in. 148H3310 QDV 15 ½ in. FPT + SVA-ST SOC ½ in. H-WHEEL* ½ in. SOC ½ in. FPT 148H3311 Fittings for hose connection Fittings for welding connection * Two valves are supplied in one box and should be mounted on site. The indicated inlet is for the stop valve - The indicated outlet is for the oil drain valve. Important! Where products need to be certified according to specific certification societies or where higher pressures are required, the relevant information should be included at the time of order. 6 DKRCI.PD.KL0.A4.02 / 520H1199 Danfoss A/S (AC-AKC / frz),
7 Danfoss A/S (AC-AKC / frz), DKRCI.PD.KL0.A4.02 / 520H1199 7
8 8 DKRCI.PD.KL0.A4.02 / 520H1199 Danfoss A/S (AC-AKC / frz),
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JSRH Series High Flow Bio-Pharma Clean Gas Pressure Reducing Valves The JSRH Series high purity gas pressure regulator was designed and built specifically for Bio-Pharma gas applications. It may also be
Pressure relief valve DHV 712 DN 65-80: 0,5-10 bar, DN : 0,3-4 bar, DN 100: 0,5-6 bar
Pressure relief valve DHV 7 DN 5-80: 0,5-0 bar, DN 5-00: 0, - bar, DN 00: 0,5 - bar Advantage for high pressure stability reliable reduction of pressure peaks and pulsations pressure setting possible at