Pressure relief valves

Transcription

1 ressure relief valves RE /11.11 Replaces: RE /10.10 ressure relief valves 1/ R Valves for line connections Valves for block installation p max = 350 bar Q max = 120 l/min Contents age Function 2 echnical data 2 Valves for line installation 3 Device dimensions 5 Valves for block installation 7 Device dimensions 9 Curves 11 Features ype of connection for pipeline installation and block installation Adjustment methods such as hand wheel, lead-seal capable, fixed, hand wheel with scale (with and without lock) Application In conveying and handling equipment, agricultural engineering, in municipal-vehicles and in general mechanical engineering. Note he versions Safety valves ÜV German echnical Inspection Agency model approved in accordance with the ressure Equipment Directive 97/23/EG are used to safeguard hydraulic accumulators, see technical data sheet RDEF

2 2/12 Bosch Rexroth AG Hydraulics ressure relief valves RE /11.11 Function his model series is based on a valve in seat design with damping piston. he punched valve seat serves to ensure high density, the damping piston prevents any valve vibration. It produces a flat control characteristic, i.e., even at an increasing flow rate the set opening pressure is for the most part maintained. his is achieved by the effect of the flow forces on the valve disk, whereby the valve continues to open as the flow rate increases. Versatile version variants are available: Housing for pipeline installation with and without measuring connection. Valve cartridges for block installation. Various adjustment methods such as hand wheel, lead-seal capable, fixed, hand wheel with scale (with and without lock). Check valve before damping piston for fast response times. Stroke limiter Valve disk Valve seat Dampingpiston Nonreturn valve echnical data Design Seat valve with damping Line connections for pipeline installation and block installation Installation position Optional Ambient temperature C ressure medium Hydraulic oils based on mineral oil acc. to DIN/ISO, other, e.g. environmentally-compatible fluids available on request Viscosity mm 2 /s permissible range mm 2 /s recommended range mm 2 /s for start permissible range ressure medium temperature 30 C C with NBR sealings, NBR = erbunan 15 C C with FKM sealings, FKM = Viton Filtration Oil contamination Class 19/16 in accordance with ISO/DIS 4406, or Class 10 in accordance with NAS 1638 to be achieved using filter β 25 = 75 Direction of flow rate shown by symbol or marking Operating pressure For line installation : max. permissible 350 bar, depending on number of load changes and temperature. Counter values on request. : max. permissible 210 bar (NBR) or 80 bar (FKM), depending on number of load changes and temperature. Counter values on request. Betriebsdruck For block installation : In accordance with set pressure. : NBR max. 210 bar, FM max. 80 bar MFd: max. 150 years, RV with set value > 210 bar: B10 value on request Cracking pressure (tolerance p nom +5 %) Set at flow 0.1 l/min Leakage oil flow Flow Max. 1 cm 3 /min Max. 120 l/min, depending on set pressure and line Ø, see chapter Characteristics

3 RE /11.11 ressure relief valves Hydraulics Bosch Rexroth AG 3/12 ressure relief valves for line installation hreaded port Version Seals Set pressure * [bar] Weight [kg] Material No. M 18 x 1,5 Fixed NBR FKM NBR R ** 150 R ** Fixed, with nonreturn valve 210 R ** Fixed NBR = erbunan, FKM = Viton ** p nom +5 % at Q = 0.1 l/min, with back flow unloaded ** ressure relief valve zinc-plated and transparent-passivated, special options upon request

4 4/12 Bosch Rexroth AG Hydraulics ressure relief valves RE /11.11 hreaded port Version Seals Set pressure * [bar] Weight [kg] Material No. G 1 / 2 ISO 228 Fixed, with nonreturn valve NBR M 18 x 1.5 Adjustable NBR R ** R ** R ** FKM NBR R ** G 1 / 2 ISO 228 NBR R ** G 1 / 2 ISO 228 Fixed, with nonreturn valve M 18 x 1.5 Adjustable, long adjusting shaft NBR Adjustable R ** G 1 / 2 ISO M 18 x 1.5 Adjustable NBR = erbunan, FKM = Viton ** p nom +5 % at Q = 0.1 l/min, with back flow unloaded ** ressure relief valve zinc-plated and transparent-passivated, special options upon request

5 RE /11.11 ressure relief valves Hydraulics Bosch Rexroth AG 5/12 Device dimensions Fixed Stroke limiter to p max. = 110 bar 37.5 Ø36 (2x) 29.5 G1/ 4 Measuring connection Ø36 Nonreturn valve Adjustment range Ø63 Ø , Adjustable = Nm M26x max. 163

6 6/12 Bosch Rexroth AG Hydraulics ressure relief valves RE /11.11 Device dimensions (Continued) 60 Ø Ø2 32 Key For locking pressure setting BKS H Ø45 Ø

7 RE /11.11 ressure relief valves Hydraulics Bosch Rexroth AG 7/12 ressure relief valves for block installation hreaded port Version Seals Set pressure * [bar] Weight [kg] Material No. M 30 x 1.5 Fixed FKM Fixed, with nonreturn valve NBR Fixed FKM NBR Fixed, with nonreturn valve HNBR 230 R Fixed NBR FKM NBR Fixed, with nonreturn valve NBR = erbunan, FKM = Viton, HNBR = herban ** p nom +5 % at Q = 0.1 l/min, with back flow unloaded

8 8/12 Bosch Rexroth AG Hydraulics ressure relief valves RE /11.11 hreaded port Version Seals Set pressure * [bar] Weight [kg] Material No. M 30 x 1.5 Fixed NBR M 30 x 1.5 Adjustable NBR Adj., return loadable up to 330 bar Adjustable, preset to bar FKM NBR Adjustable Adjustable, with nonreturn valve Adjustable Adjustable, with nonreturn valve Adjustable FKM Adjustable, with nonreturn valve NBR Adjustable FKM Adjustable, preset to bar NBR Adjustable FKM M 30 x 1.5 Adjustable, long adjusting shaft NBR Adjustable M 30 x 1.5 Adjustable NBR M 26 x 1.5 Fixed, Valve carrier for screwing-in M 24 x 1.5 See device dimensions age 10 bottom NBR NBR = erbunan, FKM = Viton * p nom +5 % at Q = 0.1 l/min, with back flow unloaded

9 RE /11.11 ressure relief valves Hydraulics Bosch Rexroth AG 9/12 Device dimensions All sealing rings included loose 48.2 With nonreturn valve Ø17.5 Ø max 71.5 max Stroke limiter to p max. = 110 bar Ø max Adjustment range max 64 Ø63 M26x1.5 = Nm 19 Maximal pressure limit (can be lead sealed) Ø44 Locating bore See age 10 top 32

10 10/12 Bosch Rexroth AG Hydraulics ressure relief valves RE /11.11 Device dimensions in this area Ø permissible 0.1 A min. 30 Rz A 0.1 A Ø28 F8 1 ) Rz 16 Ø20 H13 M30x1.5 Ø ) Return pressure < 80 bar > 80 bar Ø28 Ø F11( ) F8( ) Valve carrier for screwing-in Ø16 max hread runout 0.1 A 90 Ø31 = Nm A 0.1 A 30 2 Ø M26x min B Ø10 H13 R0.2 B A min. 15 hread Nm 1) ) Metallic sealing surface Recommendation: Glue in thread, e.g. using Loctite 243 min. 28 Ø18 H13 M24x1.5 his pressure relief valve for block installation with M 26 x 1.5 internal thread is designed for particularly small installation areas. he hydraulic parameters are identical with those for M 30 x 1.5 internal thread. he exact pressure setting must ultimately be made by the customer.

11 RE /11.11 ressure relief valves Hydraulics Bosch Rexroth AG 11/12 Curves v 35 mm 2 /s, = 50 C Exceeding the boundaries of application will cause a disproportionate increase in pressure, and even to the functional limit of the RV. For lower setting limits 45 [bar] max. permissible flow Q [l/min] For higher setting limits [bar] Q [l/min] max. permissible flow

12 12/12 Bosch Rexroth AG Hydraulics ressure relief valves RE /11.11 Further notes Special models for line installation with fatigue strength up to 350 bar on request. For proper use, please observe the following additional data sheets: Hydraulic valves for mobile applications: general information RE B1 ressure relief valves: product-specific instructions RE B2 ressure relief valves: repair instructions RDE R Information regarding the correct handling of Bosch Rexroth hydraulic products is available in our publication: General roduct Information for Hydraulic roducts RE Bosch Rexroth AG Hydraulics roduct Segment Mobile Controls Robert-Bosch-Straße 2 D Schwieberdingen Fax +49 (0) info.brh-stf@boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. he data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. he information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.