Pressure Relief Valves. DBD directly-operated

Transcription

1 ressure Relief Valves DBD directly-operated

2 Description he pressure relief valve DBD is a directly-operated poppet valve for installation in the pipelines or as a clamp-in valve. he valve is used to safeguard the pressure of hydraulic systems up to p max = 400 bar. For line installation, the housing has two connections with Whitworth pipe threads. Without housing, the valve cartridge can alternatively be screwed into the specified bore contour in any body desired. Construction ousing 2 Valve cone 3 Valve seat 4 Screwed bush 5 ressure spring 6 Counternut 7 Setting screw 8 rotection cap Valve cone 2 is pressed by compressed spring 5 into valve seat 3, thus blocking pump connection from ank connection. When opening pressure p is reached, valve cone 2 opens and the operating fluid flows from to. he opening pressure is set via Setscrew 7. o accomplish that, counternut 6 must be opened and, after adjustment, retightened. 2 KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web

3 Characteristics acc. to VDI 3276 Nominal size Flow rate (l/min) max Working pressure (bar) max eneral Characteristics Construction Mounting oppet type Cartridge type Inline type Connection K 1 (DBD 10) Connection N 06 N 08 N 10 N Dimensions age 8 11 Weight age 8 11 Mounting position optional Ambient emperature ϑ u max = 60 C ydraulic Characteristics N 06 N 08 N 10 N 20 Set pressure range p v min p v max Inlet pressure p e min p e max Outlet pressure p R max Fluid temperature ϑm min = 20 C ϑm max = 80 C Viscosity ν min = 10 mm 2 /s ν max = 600 mm 2 /s p v -Q-curve age 7 Shock absorption oppet with damping ydraulic fluids ydraulic oils to DIN 51524/25 (other fluids on request) Filtration μ m 20 KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web 3

4 ype Key DBD 06/08 Ordering example DBD 06 E 1 A 400 Set pressure range see below ype of operation A Locked setting B Rotary knob D Locked setting, panel mounting E Rotary knob, panel mounting Construction code (specified by KRAC) Mounting E Cartridge type R Inline type Nominal size 06 / 08 ressure relief valve Set pressure range ressure range in bar Flow in l/min from p v 1 up to p v 2 Q max 1atp v 1 Q max 2atp v p v 1 = minimum pressure of the set pressure range p v 2 = maximum pressure of the set pressure range 4 KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web

5 ype Key DBD 10 Ordering example DBD 10 E 1 A 63 Nominal size 10 ype of operation A Locked setting B Rotary knob D Locked setting, panel mounting E Rotary knob, panel mounting C Locked setting, sealed, ÜV-approval Construction code (specified by KRAC) Mounting E Cartridge type R Inline type D Connection K 1 ÜVapproval see below Set pressure range see below ressure relief valve Set pressure range ressure range in bar Q max Flow in l/min Q max from p v 1 up to p v 2 1 at p v 1 2 at p v p v 1 = minimum pressure of the set pressure range p v 2 = maximum pressure of the set pressure range Safety valves acc. to AD leaflet with ÜV-approval Code ÜV-approval Cracking Full Full open registered mark pressure open flow rate bar bar l/min 063 ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F Note: Each of the valves with ÜV-approval registered mark is single tested and sealed by ÜV. KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web 5

6 ype Key DBD 20 Ordering example DBD 20 E 2 A 100 ÜVapproval ype of operation A Locked setting B Rotary knob D Locked setting, panel mounting E Rotary knob, panel mounting C Locked setting, sealed, ÜV-approval see below Set pressure range see below Construction code (specified by KRAC) Mounting E Cartridge type R Inline type ressure relief valve Nominal size 20 Set pressure range ressure range in bar Q max Flow in l/min Q max from p v 1 up to p v 2 1 at p v 1 2 at p v p v 1 = minimum pressure of the set pressure range p v 2 = maximum pressure of the set pressure range Safety valves acc. to AD leaflet with ÜV-approval Code ÜV-approval Cracking Full Full open registered mark pressure open flow rate bar bar l/min 100 ÜV.SV F ÜV.SV F , ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F ÜV.SV F Note: Each of the valves with ÜV-approval registered mark is single tested and sealed by ÜV. 6 KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web

7 p v -Q-Curves Viscosity = 34 mm 2 /s Nominal size 06/ Symbol Set pressure pv (bar) open close Flow Q (l/min) Nominal size Set pressure pv (bar) open close Flow Q (l/min) Nominal size Set pressure pv (bar) open close Flow Q (l/min) KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web 7

8 0.5 x 45 ressure Relief Valves DBD directly-operated Dimensions Cartridge ype (in mm) 0.1 A A D1 D2 9 Rt 16 W L4 L3 (D2 9) L2 L1 Rt 10 L6 D1 D2 9 D4 D6 D5 L1 L2 L3 L4 L5 L6 W max max DBD 06 M 28 x1, , L5 Rt 10 D5 DBD 10 M 35 x1, , DBD 20 M 45 x1, , Dimensions DBD 08 like DBD A D6 D4 Dimensions Cartridge (in mm) Z A SW x SW 19 Z F SW x SW 19 C Z ÜV.SV F.92, DBD.. SW x SW 19 SW 6 SW 6 SW 6 Z B Ø55 Ø51 Locked setting AEX ÜV-approval Rotary knob A B C F Adjustable SW x Z Weight max max max stroke Version A DBD 06 E ,5 44, ,3 kg DBD 10 E ,5 46,5 46, ,5 0,5 kg DBD 20 E ,0 kg Dimensions DBD 08 like DBD 06 ype selection Cartridge A B C A B AEX AEX DBD 06 E 1 X X X (X) DBD 08 E 1 X X X (X) DBD 10 E 1 X X X X X DBD 20 E 2 X X X X (X) X = ype available (X) = ype possible = ype not available 8 KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web

9 Dimensions Inline ype (in mm) N R K K M L M L SW x SW 19 SW 6 A SW x SW 19 SW 6 F Locked setting AEX K M L Ø55 B Ø51 Rotary knob ÜV-approval KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web 9

10 Special Dimensions Inline ype DBD 06 and DBD 08 (in mm) A B C F K L M N R S** SW x U** Weight Ø Ø Vers. A DBD 06 R * , ,5 Ø kg DBD 10 R * , Ø kg DBD 20 R , Ø kg Dimensions DBD 08 like DBD 06 * 1 optional connection type 3 8 possible, ype: DBD 08 R 1... * 2 optional connection type 3 4 possible, ype: DBD 10 R 5... ** Special dimensions DBD 06 and DBD 08 ype Selection Inline ype A B C D E A B D E AEX AEX AEX AEX DBD 06 R 1 X X X X X (X) (X) (X) DBD 08 R 1 X X X X X (X) (X) (X) DBD 10 R 3 X X X X X X (X) (X) X DBD 20 R 2 X X X X X X (X) (X) (X) X = ype available (X) = ype possible = ype not available 10 KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web

11 Dimensions anel Mounting (in mm) K K M M L L Control panel 3-8 mm strong SW y Ø55 B Control panel 3-8 mm strong SW y SW x SW 19 A SW 6 Ø51 Rotary knob Locked setting A B Ø K L M SWx SWy DBD * DBD * , DBD Dimensions DBD 08 like DBD 06 * 1 optional connection type 3 8 possible, ype: DBD 08 R 1... * 2 optional connection type 3 4 possible, ype: DBD 10 R 5... KRAC mb ewerbestr Werdohl, ermany fon +49(0)23 92/935-0 fax +49(0)23 92/ mail info@kracht.eu web 11

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