The Bosch Rexroth SV 20 G B 1-4X/... valve matches your specified configuration: a pilot-operated check valve (isolator valve) without drain connection, nominal size 20 (NS20), threaded connection (G), and version without pre-opening (B).The technical specifications for this valve series are as follows:Parameter Specification Type SV (Pilot oil return internal / Without drain connection)Nominal Size 20 (NS20 / NG20)Maximum Operating Pressure 315 barMaximum Flow The series supports up to 550 L/min; your specified 350 L/min is within its capacity Pre-opening B – Without pre-openingConnection G – Threaded connection according to ISO 228-1🔧 Ordering Code BreakdownThe valve's specifications are encoded in its model number. An example of a full ordering code for your configuration is SV 20 G B 1-4X/... . The code is structured as follows :SV: Type (pilot-operated check valve with internal pilot oil return).20: Nominal size (NS20).G: Threaded connection.B: Version without pre-opening (as specified).1: Cracking pressure code (standard is 2.5 bar for this size; other options like 5, 7.5, or 10 bar are available via code 2, 3, or 4) .4X: Component series 40 to 49 (installation and connection dimensions remain unchanged) .Valves with the B version are documented under material numbers such as R978872250 and R900598553 .💡 Design Considerations for Version "B"The without pre-opening (B) version operates differently from its A counterpart . Choosing this variant has specific implications:Operation: When pilot pressure is applied at port X, the control spool moves and directly lifts the main seat poppet .Impact: The pressurized volume on the actuator side may be unloaded suddenly . This can lead to switching shocks and increased noise, which may cause premature wear on system components .Version B is suitable for applications where controlled decompression is not a critical requirement and a direct, rapid open

The Bosch Rexroth pilot-operated check valve matching your exact specifications—nominal size 20 (NS20), with subplate mounting (P), and the version with pre-opening (A)—is identified by the model number SV 20 P A 1-4X/ .The "A" version includes a pre-opening feature that provides a two-stage opening process to dampen decompression, reducing switching shocks and noise during operation .✅ Technical SpecificationsThe table below summarizes the confirmed performance parameters for this valve family, which align with your requirements :Parameter SpecificationType SV (Pilot oil return internal / Without drain connection) Nominal Size 20 (NS20 / NG20) Maximum Operating Pressure 315 bar Maximum Flow 350 L/min (The valve series supports up to 550 L/min; your specified 350 L/min is within its capacity) Mounting P – Subplate mounting Pre-opening A – With pre-opening 🔧 Ordering Code BreakdownThe valve's specifications are encoded in its model number as follows :SV: Type (pilot-operated check valve with internal pilot oil return).20: Nominal size (NS20).P: Subplate mounting.A: Version with pre-opening.1: Cracking pressure code (standard is 2.5 bar for this size; other options like 5, 7.5, or 10 bar are available via code 2, 3, or 4).4X: Component series 40 to 49 (installation and connection dimensions remain unchanged).For example, the valve with the material number R900587557 corresponds to a model such as SV20PA1-4X/ . Versions with different cracking pressures, like SV20PA2-4X/, are also documented .💡 Understanding the "A" Version (With Pre-Opening)The version with pre-opening offers distinct operational benefits:Operation: When pilot pressure is applied at port X, the control spool moves, pushing first a small ball poppet off its seat (pre-opening), followed by the main seat poppet .Benefits: This two-stage setup provides dampened decompression of the pressure volume on the actuator side, effectively a

Hydraulic Pilot Operated - Switching Isolator Valve - Check Valve (Bosch - Rexroth) , Without Drain Connection - Type SV.

The Bosch Rexroth SV20PB1-4X/ is the specific pilot-operated check valve for subplate mounting that matches your configuration without pre-opening .✅ Confirmed Technical SpecificationsParameter SpecificationType SV (Pilot oil return internal)Nominal Size 20 (NG20)Maximum Operating Pressure 315 bar Maximum Flow Rate 350 L/min Mounting P – Subplate mounting Pre-opening B – Without pre-opening Porting Pattern ISO 5781-08-10-0-16 Weight Approx. 4.7 kg Cracking Pressure 2.5 bar Minimum Pilot Pressure 5 bar 💡 Understanding the "B" Version (Without Pre-Opening)The key feature of this valve variant is that it lacks the two-stage decompression mechanism. In valves without pre-opening (Version B), the pressure volume may be unloaded suddenly, leading to switching shocks, premature wear, and increased noise . This version is suitable for applications where controlled decompression is not critical.

Based on the specifications you provided, a pilot-operated check valve matching your requirements is available within the Bosch Rexroth SV series. The "SV" type has internal pilot oil return, meaning it does not require a separate drain connection .Your specific configuration—a nominal size NS25 with subplate mounting (P) and pre-opening (A)—is identified as the SV 25 PA1-4X/ model .✅ Technical Specifications for SV 25 P A 1-4X/The key technical parameters that align with your request are:Maximum Operating Pressure: 315 bar .Maximum Flow: Up to 550 L/min. While your requirement is 350 L/min, the valve supports higher flow rates if needed .Pre-Opening: Yes. The "A" in the model code specifies the version with pre-opening . This feature provides a two-stage opening process. It first lifts a small ball poppet to dampen pressure surges, then opens the main poppet, avoiding switching shocks and noise .Mounting: P denotes subplate mounting .Porting Pattern: ISO 5781 standard .📋 Additional Technical DetailsParameter Specification for NS25 Subplate VersionCracking Pressure 2.5 bar (standard for code 1) Minimum Pilot Pressure 5 bar Pilot Volume (Port X) 19.27 cm³ Weight (approx.) 7.8 kg Hydraulic Fluid Mineral oils (HL, HLP) or biodegradable fluids (with appropriate seals) Cleanliness Class ISO 4406 (C) class 20/18/15 🔍 Understanding the Ordering CodeYour specifications translate into the Rexroth ordering code as follows :SV: Pilot-operated check valve with internal pilot oil return.25: Nominal size 25 (NS25).P: Subplate mounting.A: Version with pre-opening.1: Standard cracking pressure (2.5 bar).4X: Component series 40 to 49./: Placeholder for additional options like seal material (NBR or FKM) and corrosion resistance .

The Bosch Rexroth SV 25 P B 1-4X/ valve matches the specifications you provided: a pilot-operated check valve, nominal size 25 (NS25), subplate mounting (P), and the version without pre-opening (B).✅ Valve SpecificationsThe technical data confirms the following details for this configuration :Parameter SpecificationType SV (Pilot-operated check valve with internal pilot oil return) Nominal Size 25 (NS25) Maximum Operating Pressure 315 bar Maximum Flow Up to 550 l/min (your specified 350 l/min is within capacity) Mounting P – Subplate mounting Pre-opening B – Without pre-opening Porting Pattern ISO 5781 Cracking Pressure 2.5 bar (standard for code 1) 🔧 Ordering Code BreakdownYour specifications translate into the following ordering code, which follows the structure documented in the technical data sheet :SV: Pilot-operated check valve with internal pilot oil return.25: Nominal size 25.P: Subplate mounting.B: Version without pre-opening.1: Standard cracking pressure (2.5 bar; other cracking pressures are available with code 2, 3, or 4).4X: Component series 40 to 49./*: Placeholder for additional options like seal material.💡 Understanding the "B" Version (Without Pre-Opening)The key feature of this valve variant is that it lacks the two-stage decompression mechanism. In valves without pre-opening (Version B), the pressurized volume may be unloaded suddenly, leading to switching shocks, premature wear, and increased noise . This version is suitable for applications where controlled decompression is not a critical requirement.

The Bosch Rexroth SV 30 G A 1-4X/ valve matches your specifications: a pilot-operated check valve with a nominal size of NS30, threaded connection (G), and the version with pre-opening (A). The maximum flow for this valve size is up to 550 l/min, which exceeds your specified 350 l/min requirement .✅ Valve Specifications and Ordering CodeYour specifications translate directly into the Rexroth ordering code, which is structured as follows :Parameter Code MeaningType SV Pilot-operated check valve with internal pilot oil return (no drain connection) Size 30 Nominal size 30 (NS30/NG32) Connection G Threaded connection according to ISO 228-1 Pre-opening A Version with pre-opening for dampened decompression Cracking Pressure 1, 2, 3, or 4 Code 1 (2.5 bar standard) to 4 (10 bar max) Component Series 4X Component series 40 to 49 (dimensions remain unchanged) A complete ordering code for your configuration follows this pattern: SV 30 G A 1-4X/... .📊 Key Technical Specifications (NS30 / NG32)The technical data confirms the following details for this configuration :Parameter SpecificationMaximum Operating Pressure 315 barMaximum Flow Up to 550 l/min (your specified 350 l/min is well within capacity)Minimum Pilot Pressure 5 barCracking Pressure (Code 1) 2.5 bar (other options: 5, 7.5, 10 bar)Weight Approx. 10 kgPilot Volume (Port X) 19.27 cm³💡 Understanding the "A" Version (With Pre-Opening)The version with pre-opening offers distinct operational benefits :Operation: When pilot pressure is applied at port X, the control spool moves and first lifts a small ball poppet (pre-opening), followed by the main seat poppet.Benefits: This two-stage setup provides dampened decompression of the pressure volume on the actuator side, effectively avoiding switching shocks and reducing noise. It also ensures secure unloading even with low pilot pressure, preventing premature wear on system components .

The Bosch Rexroth SV 30 G B 1-4X/ valve matches your specified configuration: a pilot-operated check valve with a nominal size of NS30, a threaded connection (G), and the version without pre-opening (B).The technical data confirms this valve meets your requirements for a maximum operating pressure of 315 bar and a maximum flow rate of up to 550 l/min .✅ Valve Specifications and Ordering CodeYour specifications translate directly into the Rexroth ordering code, which is structured as follows :Parameter Code MeaningType SV Pilot-operated check valve with internal pilot oil return (no drain connection) Size 30 Nominal size 30 (NS30/NG32) Connection G Threaded connection according to ISO 228-1 Pre-opening B Version without pre-opening (as specified) Cracking Pressure 1 2.5 bar (standard; other options like 5, 7.5, or 10 bar are available with codes 2, 3, or 4) Component Series 4X Component series 40 to 49 (dimensions remain unchanged) A complete ordering code for your configuration follows this pattern: SV 30 G B 1-4X/.... Model variants like SV30GB1-4X/ are documented in product listings .📊 Key Technical Specifications (NS30 / NG32)The technical data confirms the following details for this configuration:Parameter SpecificationMaximum Operating Pressure 315 bar Maximum Flow Up to 550 l/min (your specified 350 l/min is well within capacity) Minimum Pilot Pressure 5 bar Cracking Pressure (Code 1) 2.5 bar Weight Approx. 10 kg Pilot Port X Thread G 1/4 Pilot Volume (port X) 19.27 cm³ 💡 Understanding the "B" Version (Without Pre-Opening)The version without pre-opening operates differently from its "A" counterpart, and this has specific implications for your system :Operation: When pilot pressure is applied at port X, the control spool moves and directly lifts the main seat poppet .Impact: The pressurized volume on the actuator side may be unloaded suddenly. This can lead to switching shocks and increased noise

The Bosch Rexroth SV 30 P A 1-4X/ valve is the model that matches your exact specifications: a pilot-operated check valve with a nominal size of NS30, subplate mounting (P), and the version with pre-opening (A).The "A" version includes a two-stage opening process to dampen decompression, reducing switching shocks and noise during operation .✅ Valve Specifications and Ordering CodeYour specifications translate directly into the Rexroth ordering code as follows:Parameter Code MeaningType SV Pilot-operated check valve with internal pilot oil return (no drain connection) Size 30 Nominal size 30 (NS30/NG32) Mounting P Subplate mounting Pre-opening A Version with pre-opening (as specified) Cracking Pressure 1 2.5 bar (standard; other options like 5, 7.5, or 10 bar available with codes 2, 3, or 4) Component Series 4X Component series 40 to 49 (dimensions remain unchanged)A complete ordering code for your configuration follows this pattern: SV 30 P A 1-4X/... .📊 Key Technical Specifications (NS30 / NG32)The technical data confirms the following details for this configuration :Parameter SpecificationMaximum Operating Pressure 315 bar Maximum Flow Up to 550 l/min (your specified flow is well within this capacity) Minimum Pilot Pressure 5 bar Cracking Pressure (Code 1) 2.5 bar Weight Approx. 7.8 - 7.9 kg Porting Pattern ISO 5781-10-13-0-00 Pilot Port X Thread G 1/4 Pilot Volume (port X) 19.27 cm³ Cleanliness Class ISO 4406 20/18/15 💡 Understanding the "A" Version (With Pre-Opening)The "A" version is designed for smoother system operation and includes an additional pre-opening feature. When pilot pressure is applied at port X, the control spool moves and first lifts a small ball poppet (pre-opening), followed by the main seat poppet .This two-stage setup provides distinct benefits :Avoidance of switching shocks: Provides dampened decompression of the pressure volume on the actuator side, preventing sudden, no

The Bosch Rexroth SV30PB1-4X/ valve matches your specified configuration: a pilot-operated check valve with a nominal size of NS30, subplate mounting (P), and the version without pre-opening (B). This valve meets your requirements for a maximum operating pressure of 315 bar and a maximum flow rate of up to 550 l/min .✅ Valve Specifications and Ordering CodeYour specifications translate directly into the Rexroth ordering code, which is structured as follows :Parameter Code MeaningType SV Pilot-operated check valve with internal pilot oil return (no drain connection)Size 30 Nominal size 30 (NS30/NG32)Mounting P Subplate mountingPre-opening B Version without pre-opening (as specified)Cracking Pressure 1 2.5 bar (standard; other options like 5, 7.5, or 10 bar available with codes 2, 3, or 4)Component Series 4X Component series 40 to 49 (dimensions remain unchanged)A complete ordering code for your configuration follows this pattern: SV 30 P B 1-4X/.... Model variants like SV30PB1-4X/V are documented in product listings .💡 Understanding the "B" Version (Without Pre-Opening)The version without pre-opening operates differently from its "A" counterpart, and this has specific implications for your system :Operation: When pilot pressure is applied at port X, the control spool moves and directly lifts the main seat poppet.Impact: The pressurized volume on the actuator side may be unloaded suddenly. This can lead to switching shocks and increased noise, which may cause premature wear on system components .Version B is suitable for applications where controlled decompression is not a critical requirement and a direct, rapid opening is acceptable.

For the Rexroth CDH3 MP3 mill-type cylinder with an 80 mm bore and 300 mm stroke, here are the key technical specifications from the manufacturer's documentation.The CDH3 series is a robust, single-rod mill-type cylinder designed for a nominal pressure of 350 bar (35 MPa) . The MP3 mounting style specifies a plain clevis at the cylinder base .📊 Technical Specifications & DimensionsFor an 80 mm piston diameter, the standard piston rod diameter is 56 mm .Parameter Specification for CDH3 MP3 (80mm Bore)Piston Diameter (ØAL) 80 mm Piston Rod Diameter (ØMM) 56 mm Mounting Style MP3 - Plain clevis at base Nominal Pressure 350 bar (35 MPa) Piston Rod Thread (KK) M45 x 1.5 Port Thread (EE) G3/4 Weight at 0 mm Stroke 33 - 44.5 kg (depending on options) Additional Weight per 100 mm Stroke 4.2 kg Calculated Total Weight (300 mm stroke): The estimated total weight is approximately 45.6 kg to 57.1 kg.⚙️ Force & Flow DataAt the nominal pressure of 350 bar, this cylinder configuration provides the following performance:Parameter ValueForce on Piston Side (F1) 175.9 kN Force on Rod Side (F3 - pulling) 89.7 kN Flow at 0.1 m/s (Piston Side) 30.2 L/min 📐 Key Mounting DimensionsBelow are the critical dimensions for integrating the MP3 mounting style with your cylinder :Dimension Value (mm)X1 71.5WA 22L 55MR 65M1 62.5ØCD H11 50EW h12 40🔧 Ordering Code ReferenceThe Rexroth ordering code for this cylinder follows the structure CDH3MP3/80/56/300..., where 80 is the bore, 56 is the rod diameter, and 300 is the stroke in millimeters. The MP3 designation indicates the plain clevis mounting .