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Summary of Contents for Kracht SPV 10
- Page 1 D.0024980002 Operating instructions (Translation) Pressure relief valve SPV English 19 • 21/03/2025...
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Page 2: Table Of Contents
Table of content Kracht GmbH Table of content 1 General ............................1.1 About the documentation..........................1.2 Manufacturer address ............................ 1.3 Other applicable documents ........................1.4 Symbols................................2 Safety............................2.1 Intended use ..............................2.2 Personal qualification ............................. 2.3 Basic safety instructions .......................... - Page 3 Kracht GmbH Table of content 7.2 General ................................. 25 7.3 Druckeinstellung............................... 25 7.3.1 SPV with protective cap ......................25 7.3.2 SPV with twist grip ........................26 7.4 Venting................................. 26 7.5 Additional commissioning..........................27 8 Removal............................28 8.1 Safety instructions for disassembly......................28 8.2 General .................................
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Page 4: General
1 | General Kracht GmbH 1 General 1.1 About the documentation These operating instructions describe the installation, operation and maintenance of the follow- ing product: Pressure relief valve SPV These operating instructions are an integral part of the product and must be kept in the imme- diate vicinity of the product and accessible to the personnel at all time. -
Page 5: Symbols
Kracht GmbH General | 1 1.4 Symbols DANGER Identification of an immediate hazard, which can lead to death or severe bodily injury if not avoided. WARNING Identification of a potential medium risk hazard, which can lead to death or severe bodily injury if not avoided. -
Page 6: Safety
2 | Safety Kracht GmbH 2 Safety 2.1 Intended use 1. The product has been designed for operation with fluids. Dry operation is not permitted. 2. The product may only be operated when completely filled. 3. The fluid must be compatible with the materials used in the product. Chemical expertise is required for that. -
Page 7: Basic Safety Instructions
Kracht GmbH Safety | 2 2.3 Basic safety instructions NOTICE Basic safety instructions Non-compliance can lead to hazards for people and the unit. a) Follow existing regulations for accident prevention and safety at work as well as the internal regulations of the operating company. -
Page 8: Fundamental Hazards
2 | Safety Kracht GmbH 2.4 Fundamental hazards DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 9: Device Description
Kracht GmbH Device description | 3 3 Device description 3.1 Functional principle Pressure relief valves of the series are directly operated slide valves or ball seat valves and are used to secure the low-pressure hydraulic circuits. Housing Valve gate Compression spring... -
Page 10: Variants
3 | Device description Kracht GmbH 3.2 Variants Slide valve Housing Valve gate Compression spring Spring guide Cap screw O-ring Venting screw Sealing ring Collar nut 10 Adjustment screw 11 Protective cap 88024980002-19... - Page 11 Kracht GmbH Device description | 3 Ball valve Housing Valve Seat Sphere Compression spring Spring guide Guide bush Cap screw O-ring Venting screw Sealing ring 11 Collar nut Adjustment screw 13 Protective cap 88024980002-19...
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Page 12: Type Key
3 | Device description Kracht GmbH 3.3 Type key Ordering example /001 Explanation of type key 1. Product name SPV Pressure relief valve 2. Nominal 10; 20; 25; 32; 40; 50; 80 3. Design Slide valve Seat valve Ball valve 4. -
Page 13: Special Numbers
Kracht GmbH Device description | 3 Explanation of type key 10. Viscosity / Damping Standard Vibration-damped, Damping nozzle High viscosity 11. Hydraulic control Standard (not present ) External spring space relief G 1/4 12. Special number Special numbers [} 13] 3.4 Special numbers... -
Page 14: Technical Data
4.1 General General information Design Slide valve / Seat valve Fixing type Pipeline installation / Console installation SPV 10 Whitworth pipe thread G 1/2 Whitworth pipe thread G 3/4 SPV 20 Flange connection SAE 3/4" Whitworth pipe thread G 1 SPV 25 Flange connection SAE 1"... -
Page 15: Adjustment Range, Response Pressure
Kracht GmbH Technical data | 4 General information Lubricating fluids without abrasive components Permissible media ((Petrols, solvents, etc. are not permissible)) Pipe thread : DIN EN ISO 228-1; Flange connection : DIN ISO 6162-1 (SAE J518) Preferred fitting position Install the device preferably vertical with the pressure adjustment screw facing down. -
Page 16: Characteristic Curves
4 | Technical data Kracht GmbH 4.3 Characteristic curves ∆p-Q- Characteristic curves ( at 34 mm²/s) SPV 10 SPV 20-25 SPV 32-40 SPV 50 88024980002-19... -
Page 17: Permissible Temperature Range
Kracht GmbH Technical data | 4 SPV 80 4.4 Permissible temperature range Seal material Fluid temperature ϑ [°C] ϑ [°C] m min m max Copper EPDM Soft iron FKM - Low temperature Seal material Ambient temperature ϑ [°C] ϑ [°C]... -
Page 18: Material Data
4 | Technical data Kracht GmbH 4.5 Material data Housing Seal Compression Other mater- Thread protect- Cap nut spring ials ive cap Polypropylen (PP) Copper Steel (St) EN-GJL-300 Polypropylen (PP) - - - Spring steel Steel (St) Soft iron EN-GJS-400-15... -
Page 19: Transport And Storage
Kracht GmbH Transport and storage | 5 5 Transport and storage 5.1 General a) After receiving the delivery, check the product for transport damage. b) If transport damage is found, the manufacturer and the transport company must be notified immediately. The product must then be replaced or repaired. -
Page 20: Storage Conditions
5 | Transport and storage Kracht GmbH Products with EPDM seals are not mineral oil resistant and their function is not tested. The in- ternal parts are not preserved. If the product is not put into operation immediately, all surfaces exposed to corrosion must be protected by suitable preservation measures. -
Page 21: Installation
Kracht GmbH Installation | 6 6 Installation 6.1 Safety instructions for installation DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 22: Mechanical Installation
6 | Installation Kracht GmbH 6.2 Mechanical installation 6.2.1 Preparation a) Check the product for transport damage and contamination. b) Remove any preservative present. ð Only use cleaning agents that are compatible with the materials used. ð Do not use cleaning wool. -
Page 23: Connection Lines
Kracht GmbH Installation | 6 6.3 Connection lines 6.3.1 General WARNING Failure of pressure bearing parts due to overload Risk of injury from flying parts. Risk of injury due to splashing fluids. a) Use only connections and lines approved for the expected pressure range. -
Page 24: Commissioning
7 | Commissioning Kracht GmbH 7 Commissioning 7.1 Safety instructions for start-up DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 25: General
Kracht GmbH Commissioning | 7 7.2 General The response pressure of the device is factory set to the mean value of each pressure stage. If applicable, the pressure setting must be adapted during commissioning. WARNING Failure of pressure bearing parts due to overload Risk of injury from flying parts. -
Page 26: Spv With Twist Grip
7 | Commissioning Kracht GmbH 7.3.2 SPV with twist grip Venting screw 2 rotary handle Spring chamber a) Set the response pressure with the adjusting screw. ð Clockwise rotation = Pressure increase ð Counter-clockwise rotation = Pressure decrease ATTENTION The twist grip is not secured against accidental maladjustment. -
Page 27: Additional Commissioning
Kracht GmbH Commissioning | 7 No negative pressure may be generated at the tank port T of the valve in the flow-through state (Q > 0), as otherwise no venting of the valve is possible and undesirable vibrations and noises can occur as a result. -
Page 28: Removal
8 | Removal Kracht GmbH 8 Removal 8.1 Safety instructions for disassembly DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 29: General
Kracht GmbH Removal | 8 8.2 General a) Depressurise and de-energise the system. b) Close existing shut-off elements in front of and behind the product. c) Open existing drain elements and undo connection lines. Collect and dispose of leaking me- dia so that no hazard is created for persons or the environment. -
Page 30: Maintenance
9 | Maintenance Kracht GmbH 9 Maintenance 9.1 Safety instructions for maintenance DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 31: Maintenance Work
Kracht GmbH Maintenance | 9 9.2 Maintenance work Checking and documentation of the operating data Regular checking and documentation of all operating data helps to detect faults at an early stage. – Perform the maintenance work according to specifications. – Replace defective or worn components. -
Page 32: Maintenance Table
9 | Maintenance Kracht GmbH 9.4 Maintenance table 9.4.1 Maintenance table Additional in- formation 9.4.2 Check the operating pressure 9.4.3 Check the media temperature 9.4.4 Inspection valve function 9.4.5 Check the condition of the operating fluid 9.4.6 Check the equipotential bonding 9.4.7... -
Page 33: Inspection Valve Function
Kracht GmbH Maintenance | 9 9.4.4 Inspection valve function Attachment valves and valve cartridges must be actuated at regular intervals. This is the only way to ensure proper function. 9.4.5 Check the condition of the operating fluid Pay attention to colour (dark colouring), odour and milky turbidity. -
Page 34: Repair
10 | Repair Kracht GmbH 10 Repair 10.1 Safety instructions for repairs DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 35: General
Kracht GmbH Repair | 10 10.2 General Corrective maintenance includes: 1. Troubleshooting Finding damage, determining and localising the cause of the damage. 2. Damage repair Removing the primary causes and replacing or repairing defective components. Repairs are generally carried out by the manufacturer. -
Page 36: Fault Table
10 | Repair Kracht GmbH 10.3 Fault table Fault Potential causes Possible measures Increased noise Increase valve opening pres- Wobbling pressure relief valve sure Air in the spring chamber Vent the system Mechanical vibrations Air in the spring chamber due...
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