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Accumulators

Product catalog summary

EATON Accumulators Overview
Eaton accumulators are engineered to improve machine performance, efficiency, and reliability while minimizing energy costs, noise, and maintenance. They comply with ASME standards and can be customized. Eaton offers bladder, piston, and diaphragm accumulators in various sizes, materials, and pressure ratings, along with necessary accessories.

Application Benefits
Accumulators offer benefits such as reduced installed power, emergency operations, pulsation dampening, thermal expansion absorption, surge control, and suspension for heavy vehicles. They help reduce system shocks, energy costs, and noise levels while enhancing performance and design flexibility.

Introduction to Accumulators
The document introduces bladder and piston accumulators, highlighting their construction from seamless tubing and advanced elastomers. They utilize the compressibility difference between gas and fluid, with a nitrogen precharge to manage fluid flow and pressure.

Bladder Accumulators
These consist of a fluid and gas section separated by a bladder, available in materials like Buna-N, Viton, and Butyl, suitable for different temperatures and fluids. Eaton offers corrosion protection and flexible mounting options. Common applications include agricultural machinery, oil fields, and construction equipment.

Basic Models & Features

Bottom Repairable Bladder (A2): Sizes from 1 to 54 liters, pressure ratings of 210 and 345 bar.
Top Repairable Bladder (A3): Sizes from 10 to 54 liters, repairable from both ends.
Diaphragm (A9): Compact design, sizes from 0.075 to 3.5 liters.
Piston (AP): Sizes from 1 to 38 liters, suitable for high flow rates.
Gas Bottles (A6): One size up to 57 liters, meeting safety requirements.

Comparison of Standard Accumulators
The document compares diaphragm, bladder, and piston accumulators based on volume, pressure, flow rate, mounting position, weight, cost, and design considerations. Diaphragm accumulators are noted for compact design and shock application suitability, bladder accumulators for versatility, and piston accumulators for large volumes and high flow rates.

Conclusion
Eaton accumulators provide cost-effective and efficient performance enhancements for hydraulic systems. They are backed by a warranty and can be customized for specific applications and environments.

Diaphragm Accumulators
These use nitrogen gas compressibility to store hydraulic energy, suitable for industrial and mobile applications. They offer energy storage, pressure maintenance, and leakage compensation. Different diaphragm materials like Buna-N, Viton, and Butyl are specified for various temperature ranges and fluid compatibilities.

Piston Accumulators
These use a piston to separate gas and fluid sections, with nitrogen as the compressible medium. They are constructed with a finely finished cylinder and various sealing systems, with detailed model codes and specifications provided.

Safety & Shut-off Blocks
Designed to protect and manage hydraulic accumulators, these blocks offer compact design advantages, reduced installation time, and various system connections. They include pressure relief valves, manual and solenoid-operated bleed valves, suitable for use with mineral oil, hydraulic oil, and other fluids.

Model Codes and Specifications
The document includes detailed model codes for each type of accumulator and safety block, specifying parameters like pressure rating, port configuration, size, seal material, and service type, along with dimensions and weight for proper selection and installation.

Applications
EATON accumulators are applicable in fields such as agricultural machinery, forestry equipment, machine tools, mining machinery, and mobile construction equipment.

Catalog excerpts

The EATONAdvantage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Application Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Bladder Accumulators. . . . . . . . ....

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FlowRatePump OutputTimeCycle Energy stored in accumulatorEnergy provided by accumulator Energy provided by pump 2.Emergency and safety. 3.Dampening of pulsationand reduction of noise 1.Reduction of installedpower. An accumulator which is keptfully charged allows for instantand/or repetitive operationsas required (braking, openingof door, etc.). In order to dampen pressurechanges, which are causedby the pulsation of a pump,an accumulator makes it pos- sible, due to the low inertia of its bladder, to improve the precision of operation and toreduce the sound level of theinstallation. Using an accumulator...

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Comparison of Standard Accumulators Type NominalVolume MAWP (psi) PressureRatio Flow Rate MountingPosition Weight Cost Design Consideration Diaphragm small volume and flow Օ low weight compact design Օ good for shock applications(good response characteristics) 5 to 230 in > 3 3000 8:1 typically(some 4:1) up to 40 gpm any lowest lowest Bladder best general purpose Օ wide range of standard sizes good for shock applications(good response characteristics) 1 qt. to 15gal 3000, 5000 4:1 up to 240 gpm prefer vertical middle middle Piston Օ best for large stored volumes best for high flow rates Օ not...

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֖ Butyl Pressure Rating > Cold weather, low tem-perature buna > Hydrin > 3 Port Configuration > 2֔ split flange (code 61) > 7 Certification > 1 1/2֔ split flange (code 62) > ֖ NFTF pipe thd. (not recommended) > EATON Accumulators Catalog V-FIFI-MC003-E July 2005 7 size="-2">

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Cold weather, low tem-perature buna > 2 Pressure Rating > ֖ Stainless steel > 3 Port Configuration (SAE)*A 9/16֔ str. thd. - 18 UNF > 7 Certification B 3/4֔ str. thd. - 16 UNF > Ԗ Pressure equipmentdirective, CE marked > 4 Size > EATON Accumulators Catalog V-FIFI-MC003-E July 2005 11 size="-2">

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A91 蔸 D +0.04" A92A93 (sealed gas port) 8V1-ISO 4570 1.63"7/8-14UNFO-ring 7.5 x 2 (mm) 0.91"M28 x 1.5 0.08" 0.31" A 0.83" 0.83" F F K (hex) K (hex) > 12 EATON Accumulators Catalog V-FIFI-MC003-E July 2005 size="-1">

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2 3 4 5 6 7 8 1 1 TypeAP > 6 Seal MaterialBN Piston Accumulator ֖ Buna-NVT Viton > 2 Pressure Rating3 ֖ 210 bar (3000 psi) > 7 Service > Stainless steel ֖ 4.00 diameter 6 Ԗ 5.90 diameter > 8 Certification > 4 Ԗ For use in the UnitedStates Port ConfigurationD 1 5/8 - 12 straight thread > Pressure equipmentdirective, CE marked > 5 Size058 ֖ 0.95 l (0.25 USgal.) 115 1.89 l (0.5 USgal.) 230 ֖ 3.79 l (1.0 USgal.) 346 5.70 l (1.5 USgal.) 460 ֖ 7.60 l (2.0 USgal.) 578 9.46 l (2.5 USgal.) 05G ֖ 18.90 l (5.0 USgal.) 075G 28.40 l (7.5 USgal.) 10G ֖ 37.90 l (10.0 USgal.) > ModelSizeA inches (mm)B inches...

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Model Code ModelSizeConnectionsWeightAD > ֖ Stainless steel Pressure Rating > ֖ For use in the UnitedStates Port Configuration > (1 and 2)(lbs.) (inches)(inches) A6 3015G1 5/16-12UN24772֔9 A Ԙ DConnection 1 Connection 2 > EATON Accumulators Catalog V-FIFI-MC003-E July 2005 15 size="-2">

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Model with solenoid oper-ated bleed valve In addition to the features ofthe type MӔ block, the typeEӔ model also contains a solenoid operated bleedvalve for automatic pressurerelease of the accumulator. Construction The Safety and Shut-off Blockconsists of a valve block, abuilt-in pressure relief valve,a main shut-off valve, and a manually operated bleed valve.In addition, an optional solenoidoperated bleed valve allows automatic release of theaccumulator or user unit and therefore of the stored energy in an emergency or duringshut-down. The necessary return line connection is pro-vided in addition...

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Locking Device (ifrequired) Connection Type > 1 2 3 4 5 6 Threaded:A BSPP (ISO 228) > 7 8 9 10 C ֖ SAE (ANSI B 1.1)Flanged (SAF 32 only): E SAE 2֔ - 3000 psi (Code 61) F SAE 1-1/2֔ - 6000 psi (Code 62) > 1 DesignationESS > 6 2-Way Solenoid OperatedBleed Valve > 8 10 Safety & Shut-off Block Y ֖ Normally Open (2SV5E2Y)Z Normally Closed (2SV5E2Z)Solenoid(omit) ֖ if manual discharge was selected Operating Function(omit) if manual discharge was selected > 2 Size of Shut-off valve10 ֖ DN 10 1 24 VDC2 ֖ 110 VAC 60 Hz 20 ֖ DN 20 32 DN 32 > 3 ModelM > 9 S Adapter ֖ Manual dischargeE Solenoid operated...

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TypeApprox.Weight kg (lbs.) ESS 32 M12.0(26.4) > HEX. SOC. Head Cap ScrewM16x45 DIN912 Part No, 615924 (4 bolts included)12077855092Manual Bleed ValveDirect-OperatedPressure Relief Valve DB12782-Way DirectionalValve: Type WSM (optional)198Coil Can BeRotated 36075100(Accumulator Connection) Gauge Conn.1 7/8-12UN11073.523363 2671731308643Nameplate System ConnectionMain Shut-Off Valve 397/16-20UNF3/4-16UNFTANKCONN.105AdapterS ESS 32 E12.4(27.2) > SAE 2-3000 PSICode 61Thread M1220 Deep*SAE 2-3000 PSICode 61 Thread M1220 Deep77503/4-16UNF TypeApprox.Weight > 30 42.977.860356092Manual Bleed ValveDirect-OperatedPressure...

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775013079.4303/4-16UNFTank Conn. SAE 1 1/2 - 6000 PSICode 62Thread M16 26 Deep*SAE 1 1/2 - 6000 PSICode 62Thread M1626 Deep* 3079.436.560356092Manual Bleed ValveDirect-OperatedPressure Relief Valve DB12782-Way DirectionalValve: Type WSM(optional)36.5Coil Can BeRotated 36075100(Accumulator Connection)Gauge Conn.7/16-20UNF11645233631459279562NameplateSystem ConnectionMain Shut-Off Valve TypeApprox.Weight kg (lbs.) ESS 32 M15.0 (33.1) ESS 32 E15.4(33.9) > Fig. 1Fig. 2 A B (HEX)ؘ A Thread D B ThreadO-ringO-ring > ؘ 18 F CE21.5 19F CE DO-ringO-ring M33 x 2 > ؘ 105(Bolt Circle) 38 Type SAFAdapterFig.ThreadABCDEF...

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