The EATON Advantage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Application Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Bladder Accumulators . . . . ....

The Eaton Advantage Eaton understands the need to improve machine performance, efficiency and reliability with cost effective hydraulic systems. Eaton accumulators help to achieve these goals while contributing to lower energy costs, reduced noise levels and a reduction in hydraulic system leakage and maintenance costs. Manufacturing is conducted in a plant which is approved and monitored by various national and state agencies. For example, the plant is authorized to use the American Society of Mechanical Engineers (ASME) “U” Code to certify that the accumulator meets all requirements of the...

Application Benefits Flow Rate Pump Output Time Cycle Energy stored in accumulator Energy provided by accumulator Energy provided by pump 1. Reduction of installed power. An accumulator which is kept fully charged allows for instant and/or repetitive operations as required (braking, opening of door, etc.). 3. Dampening of pulsation and reduction of noise In order to dampen pressure changes, which are caused by the pulsation of a pump, an accumulator makes it possible, due to the low inertia of its bladder, to improve the precision of operation and to reduce the sound level of the installation....

General description The shells of bladder and piston type accumulators are manufactured from homogeneous, seamless tubing. In bladder accumulators one or both ends is formed hemispherically by either spinning or hammering operations. Strict heat treatment and stress relieving is performed on all shells after the forging operation to ensure compliance with the required mechanical properties. A full range of bladders have been developed from the most advanced elastomers capable of meeting low temperatures (down to -50°F) and high temperatures (up to 300°F). These same bladder materials are compatible...

Bladder Accumulators General Information Corrosion Protection The bladder accumulator consists of a fluid section and a gas section, with the bladder acting as a gas-proof screen. The fluid around the bladder is connected with the hydraulic circuit, so that the bladder accumulator draws in fluid when the pressure increases thus compressing the gas. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit. For use with certain aggressive or corrosive fluids, or in a corrosive environment, EATON offers protective coatings and corrosive resistant materials...

Bottom Repairable Model Code Type A2 – Bottom repairable 1 Pressure Rating Bladder Material BN – Buna-N VT – Viton BL – Butyl EP – EPR CW – Cold weather, low temperature buna Port Configuration A – 3/4” str. thd. B – 1 1/16” str. thd. C – 1 5/16” str. thd. D – 1 5/8” str. thd. E – 1 7/8” str. thd. F – 1 1/4” str. thd. G – 2” split flange (code 61) H – 1 1/2” split flange (code 62) P – NFTF pipe thd. (not recommended) 4 M – Petroleum oil W – Water S – Stainless steel 7 Note: Not all combinations are available. Model codes in bold are standard items. Viton is a registered trademark of Dupont EATON...

Dimensions are in inches/(millimeters) and lbs./(kg) Norn. Eff. Gas Weight A B1 C 0D 0E Port OptionThread J Q2 Size Vol, gal. Vol, in3_SAE (see model code) gpm Dimensions are in inches/(millimeters) and lbs./(kg) Split Flange Connection (sizes 2.5 -15)" Series B in./(mm) oE in./(mm) Split Flange Connection F Q2 gpm Dimensions are in inches/(millimeters) and lbs./(kg) 1) Applies to SAE thread type only. For Split Flange, see chart and illustration below. 2) Maximum discharge flow rate recommended for vertically mounted accumulators. EATON Accumulators Catalog V-FIFI-MC003-E July 2005

Top Repairable Model Code Pressure Rating 30 – 210 bar (3000 psi) 50 – 345 bar (5000 psi) Port Configuration E – 1 7/8” str. thd. G – 2” split flange (code 61)3 H – 1 1/2” split flange (code 62) P – NFTF pipe thd. (not recommended) 3 Bladder Material BN – Buna-N VT – Viton BL – Butyl CW – Cold weather, low temperature buna M – Petroleum oil W – Water S – Stainless steel 7 Note: Not all combinations are available. Model codes in bold are standard items. Port Option Thread E SAE (see model code) 9.1 E, G (231) 9.1 E, G (231) 9.1 E, G (231) 9.1 E, G (231) 9.1 E, G (231) Dimensions are in inches/(millimeters)...

Diaphragm Accumulators General Information Diaphragm Materials EATON diaphragm accumulators utilize the compressibility of a gas (nitrogen) in storing hydraulic energy. The gas is required because fluids are practically incompressible and thus, cannot store energy by themselves. The diaphragm is utilized to separate the gas and the fluid sides of the accumulator. Not all fluids are compatible with every elastomer at all temperatures. Therefore, EATON offers the following choice of elastomers: • BN - Buna-N (nitrile) (5º-180ºF using mineral oil) • VT - Fluorocarbon (viton) (5º-300ºF) • BL - Butyl...

Diaphragm Accumulators Model Code Bladder Material BN – Buna-N VT – Viton BL – Butyl EP – EPR CW – Cold weather, low temperature buna M – Petroleum oil W – Water S – Stainless steel 7 Note: Not all combinations are available. Model codes in bold are standard items. *See drawings for standard port configurations. Viton is a registered trademark of Dupont EATON Accumulators Catalog V-FIFI-MC003-E July 2005