Diaphragm Accumulator - AD Series
Parker is the leading manufacturer of accumulators in the world. Parker’s broad standard offering includes the full range of piston, bladder and diaphragm accumulators. For your convenience, Parker offers the premier accumulator sizing technology with its inPHorm Accumulator Sizing and Selection Software.
Features
• Operating Pressures up to 250 bar (3625 psi)
• Capacities from .075 to 2.80 Liters (5 to 170 cu in)
• Compact and Lightweight
• Welded, Non-Repairable Design offers great tolerance to environmental contamination
• Hydrin Diaphragms
• US and Metric Gas Valve options
Why Use Diaphragm Accumulators?
• improves system efficiency
• supplements pump flow
• supplies power in emergency
• compensates for leakage
• absorbs hydraulic shocks
• affordable design
• good response characteristics
• works well with water and low lubricity fluids
Specifications
Materials
• Shell – high strength alloy steel
• Ports – steel
• Gas Valve Stem – steel
• Diaphragms – Hydrin (ECO)
Max. Compression Ratio (max. working pressure/precharge pressure): 8 to 1 on .075 liter through 1.4 liter; 4 to 1 on 2 liter and larger
Pressure Ratings – See Models, Capacities and Dimensions for pressure ratings by size, all rated at minimum 4 to 1 design factors.
Fluids – Parker’s diaphragm accumulators are compatible with most petroleum-based industrial or water-based flame resistant fluids. See diaphragm material options or consult factory for details.
Precharge – Units are shipped with a nominal nitrogen precharge as standard. For specific precharge pressure, specify charge pressure at the time of order.
Available Options
• Diaphragm Compounds – Hydrin standard (other materials available - consult factory)
• Gas Valves – M28 x 1.5 standard and US Schrader style (ISO 4570-8VI) gas valve optional
• Hydraulic Ports –SAE #6 standard for 5 and 10 cu in sizes / SAE #8 for all larger sizes (other ports available - consult factory)
Shell
The shell is manufactured from a high strength alloy steel. The non-repairable electron-beam welded construction reduces size, weight, and, ultimately, initial cost.
Diaphragm
The flexible diaphragm provides excellent gas and fluid separation. Diaphragms are available in Hydrin (ECO) compound which provides excellent service with most mineral fluids. ECO offers excellent low-temperature performance for mobile applications.
Button
The button closes the fluid port when the accumulator is fully discharged to prevent diaphragm extrusion, a low cost alternative to more complex and expensive valve-spring designs.
Fluid Port
SAE straight thread for easy installation and leak-free service.
Metric Gas Valve
Parker AD Series diaphragm accumulators are fitted as standard with metric M28X1.5 gas valves. This rugged gas valve features an internal hex locking screw with sealing washer. Charging and pressure checking can be accomplished by utilizing the M28X1.5 charging and gauging assembly.
U.S. Gas Valve
Parker AD Series diaphragm accumulators can be fitted with an optional US gas valve. The US gas valve features an internal gas valve core and a sealing washer. Charging and pressure checking can be accomplished by utilizing standard charging and gauging assembly.
Standard Diaphragm Materials
Hydrin's recommended operating temperature ranges and the types of fluids that are generally compatible. Minimum/maximum temperature allowable is -40°F to 176°F (- 40°C to 80°C) for hydrin elastomers
Features
• Operating Pressures up to 250 bar (3625 psi)
• Capacities from .075 to 2.80 Liters (5 to 170 cu in)
• Compact and Lightweight
• Welded, Non-Repairable Design offers great tolerance to environmental contamination
• Hydrin Diaphragms
• US and Metric Gas Valve options
Why Use Diaphragm Accumulators?
• improves system efficiency
• supplements pump flow
• supplies power in emergency
• compensates for leakage
• absorbs hydraulic shocks
• affordable design
• good response characteristics
• works well with water and low lubricity fluids
Specifications
Materials
• Shell – high strength alloy steel
• Ports – steel
• Gas Valve Stem – steel
• Diaphragms – Hydrin (ECO)
Max. Compression Ratio (max. working pressure/precharge pressure): 8 to 1 on .075 liter through 1.4 liter; 4 to 1 on 2 liter and larger
Pressure Ratings – See Models, Capacities and Dimensions for pressure ratings by size, all rated at minimum 4 to 1 design factors.
Fluids – Parker’s diaphragm accumulators are compatible with most petroleum-based industrial or water-based flame resistant fluids. See diaphragm material options or consult factory for details.
Precharge – Units are shipped with a nominal nitrogen precharge as standard. For specific precharge pressure, specify charge pressure at the time of order.
Available Options
• Diaphragm Compounds – Hydrin standard (other materials available - consult factory)
• Gas Valves – M28 x 1.5 standard and US Schrader style (ISO 4570-8VI) gas valve optional
• Hydraulic Ports –SAE #6 standard for 5 and 10 cu in sizes / SAE #8 for all larger sizes (other ports available - consult factory)
Shell
The shell is manufactured from a high strength alloy steel. The non-repairable electron-beam welded construction reduces size, weight, and, ultimately, initial cost.
Diaphragm
The flexible diaphragm provides excellent gas and fluid separation. Diaphragms are available in Hydrin (ECO) compound which provides excellent service with most mineral fluids. ECO offers excellent low-temperature performance for mobile applications.
Button
The button closes the fluid port when the accumulator is fully discharged to prevent diaphragm extrusion, a low cost alternative to more complex and expensive valve-spring designs.
Fluid Port
SAE straight thread for easy installation and leak-free service.
Metric Gas Valve
Parker AD Series diaphragm accumulators are fitted as standard with metric M28X1.5 gas valves. This rugged gas valve features an internal hex locking screw with sealing washer. Charging and pressure checking can be accomplished by utilizing the M28X1.5 charging and gauging assembly.
U.S. Gas Valve
Parker AD Series diaphragm accumulators can be fitted with an optional US gas valve. The US gas valve features an internal gas valve core and a sealing washer. Charging and pressure checking can be accomplished by utilizing standard charging and gauging assembly.
Standard Diaphragm Materials
Hydrin's recommended operating temperature ranges and the types of fluids that are generally compatible. Minimum/maximum temperature allowable is -40°F to 176°F (- 40°C to 80°C) for hydrin elastomers
