Leading Manufacturer, Supplier & Retailer of Bosch Rexroth Bladder-Type Accumulators, Bosch Rexroth Diaphragm Type Accumulators HAD, Hydac Mounting Brackets, Hydac SBO Diaphragm accumulators and Hydac FPK charging.
Bladder-type accumulators are used for energy storage, shock and vibration absorption and leakage oil or volume compensation in hydraulic systems. They consist of a seamless pressure vessel (high-tensile steel) whose interior is split into a gas and fluid side by an elastic bladder. When the operating pressure is increased, hydraulic fluid flows into the accumulator and compresses the gas in the bladder until the gas pressure is identical to the fluid pressure. When the operating pressure is reduced, the gas expands again and, in this way, feeds the hydraulic system with hydraulic fluid. Nominal volume 1 … 50 liters Component series 4X Maximum operating pressure 350 bar Hydraulic accumulator as per Pressure Equipment Directive 9723EC Bladder material for different applications Use e.g. as energy storage in intermittent operation systems, energy reserve for emergencies, compensation of leakage losses, shock and vibration absorption
Diaphragm type accumulators are used for energy storage, shock and vibration absorption and leakage oil or volume compensation in hydraulic systems. They consist of a pressure-resistant tank (high-tensile steel) whose interior is split into a gas and a fluid side by an elastic diaphragm. When the operating pressure is increased, hydraulic fluid flows into the accumulator and compresses the gas until the gas pressure is identical to the fluid pressure. When the operating pressure is reduced, the gas expands again and, in this way, feeds the hydraulic system with hydraulic fluid. Nominal volume 0.075 to 3.5 liters Component series 1X and 2X Maximum operating pressure 350 bar Hydraulic accumulator as per Pressure Equipment Directive 9723EC Diaphragm material for different applications Use e.g. as energy storage in intermittent operation systems, energy reserve for emergencies, compensation of leakage losses, shock and vibration absorption
HYDAC mounting components are used to mount all types of hydro-pneumatic accumulators safely and simply, regardless of the mounting position. Our wide range includes suitable mounting components for every type of static hydro-pneumatic accumulator. Mounting components are used primarily for the following: to fix the accumulator into its position to carry the weight of the accumulator to counteract the forces exerted by the hydraulic lines
Diaphragm accumulators are a cost effective option for numerous functions involving energy storage, shock absorption or pulsation dampening in a hydraulic or fluid system. They are well suited for applications where smaller fluid volumes and flow rates are adequate and that require or involve: Compact design Low weight Flexible mounting positions Extremely quick shock response Low cost Low lubricity fluids, like water Diaphragm Accumulators have been successfully applied in both industrial and mobile applications for energy storage, maintaining pressure, leakage compensation, and vehicle hydraulic systems. HYDAC manufactures two types of diaphragm accumulators: Non-repairable (welded) Repairable (threaded) Diaphragm Materials Not all fluids are compatible with every elastomer at all temperatures, therefore, HYDAC offers the following materials: NBR (Standard Nitrile) LT-NBR (Low Temperature Nitrile) ECO 30 (Epichlorohydrin) IIR (Butyl) FPM (Fluorelastomer) others (available upon request) To determine which material is appropriate, always refer to fluid manufacturer’s recommendation. Corrosion Protection For use with certain aggressive or corrosive fluids, or in a corrosive enviroment, HYDAC offers protective coatings and corrosive resistant materials (i.e. stainless steel) for the parts that interface with the fluid or are exposed to the hostile enviroment. Mounting Position Diaphragm accumulators are designed to mount in any position. In systems where contamination is a problem, we recommend a vertical mount with the fluid port oriented downward. System Mounting HYDAC diaphragm accumulators are designed to be screwed directly onto the system. We also recommend the use of our mounting components, (detailed on page 84) to minimize the risk of failure due to system vibrations Some common applications of diaphragm accumulators are: Agricultural Machinery & Equipment Forestry Equipment Machine Tools Mining Machinery & Equipment Mobile & Construction Equipment Off-Road Equipment For specific examples of applications using diaphragm accumulators, please see page 89. Construction Both types of diaphragm accumulators have the same basic construction. The difference is in the shell. The welded version has a shell that is electron-beam welded, and therefore cannot be repaired. The threaded type has a shell made up of two halves (top and bottom) which are held together by a threaded locking ring.
To maintain system performance HYDAC recommends that the gas precharge pressure is checked regularly. The inevitable loss of gas precharge pressure due to permeability will change the system effectiveness (performance) and could cause damage to the bladder, diaphragm, or piston accumulator. HYDAC charging and gauging units allow hydro-pneumatic accumulators to be precharged with dry nitrogen. For these purposes, a charging and gauging unit is connected to a commercially available nitrogen bottle via a flexible charging hose. All HYDAC charging and gauging units incorporate a gauge and check valve in the charging connection, and a manual bleed valve with a T-handle. HYDAC offers two types of charging and gauging units: FPK for use with HYDAC version 1 gas valve FPS for use with HYDAC version 4 gas valve
Pulsations and shocks in hydraulics lines can result in costly damage to the piping and other system components. Reciprocating piston pumps by design create pressure pulsations, vibrations, and noise in the systems. HYDAC suction stabilizers, pulsations can make control in servo systems nearly impossible without installing a pulsation damperner. HYDAC shock absorbers can be applied to greatly reduce shock wave energy. These waves can be harmful to all components in your hydraulic system. Shock waves can be created by closing a valve in a high flow line, such as one found in a petroleum terminal.
Piston Accumulators are a cost effective option for numerous functions involving energy storage, and sometimes shock absorption in a hydraulic or fluid system. They are well suited for applications needing: High Pressure Ratios Large Volumes of Oil High Fluid flow rates Volumes monitoring by way of piston position sensor or switch systems Advantages of Using the Low-friction Sealing System (type 2): Minimum friction Suitable for low pressure differentials No start-up friction, no stick-slip Low noise, no vibration High piston speeds up to 12 ftsec continuous Improved accumulator efficiency High life expectancy, low maintance requirements Construction HYDAC piston accumulators consist of: A cylinder with a finely finished internal surface An end cap on the gas side and fluid side, sealed with 0-rings A lightweight metal piston A variety of sealing systems are available depending on the application Sealing Systems Precise information about the proposed operating conditions is required in order to select the most appropriate sealing system. Important criteria for this selection are: Number of actuations or cycles Piston speed Temperature fluctuation Operating fluid Cleaniness of fluid Maintenance requirements Seal Materials The following sealing elastomers are available, depending on the operating conditions: NBR (acrylic nitrile butadiene rubber) FPM (fluoro-elastomer) PUR (polyurethane) Suitable materials are also available for low temperature applications. Fluids The following sealing materials are suitable for the fluids listed below: NBR, resistant to: Mineral Oils (HL and HLP) Non-flammable fluids from groups HFA, HFB, and HFC Water and seawater up to approx. 100°C NBR, not resistant to Aromatic hydrocarbons Chlorinated hydrocarbons Amines and ketones Hydraulic fluids from the HFD Groups FPM, resistant to: Mineral Oils (HL and HLP) Hydraulic fluids from the HFD Groups Fuels as well as aromatic and chlorinated hydrocarbons Inorganic acids (but not all, please contact HYDAC) System Mounting HYDAC piston accumulators may operate in any position. Vertical installation is preferable with the gas side up. We recommend the use of our mounting components, which are detailed on page 84, to minimize risk of failure due to system vibrations. Effects of Seal Friction The permissible piston velocity depends on the sealing friction. Higher piston velocities are possible where there is less sealing friction. HYDAC piston accumulators with low friction piston seals allow continuous operating velocities of up to 12 ftsec with short bursts, up to 15 ftsec (see type 2 piston). Small pressure differentials between gas and oil side improve the effectiveness of HYDAC piston accumulators. To emphasize the friction effect on the pressure curve during an accumulation cycle, measurements with various sealing systems are illustrated. The measurements graphs below are a true representation of the gas and oil pressure of piston accumulators with different sealing systems. The comparison of these two measurements clearly shows the difference int he pressure differential between gas and oil side: Graph 1: Δp max. ~ 125 psi Graph 2: Δp max. ~ 14.5 psi The effect of the sealing friction on the working pressure is particularly striking in traditional piston designs. Abrupt piston movements (the stick-slip effect) are caused by the seal friction as shown in Graph 1. the low sealing friction of HYDAC type 2 pistons drastically reduces the stick-slip effect therefore maximizing piston responsiveness.
Heatless desiccant dryers remove moisture by passing air over a regenerative adsorbent material which strips moisture from the air. They are ideal for critical high quality oil free air treatment applications where very dry air is required. P3TJA Series Heatless Regenerative Desiccant Dryers are ideal for critical, high quality, oil free air treatment applications where very dry air is required. These dryers typically provide pressure dew points of -40°F (-40°C) down to -100°F (-73°C) pressure dew point (pdp). Beneficially, a pressure dew point of -15°F (-26°C) or better will not only prevent corrosion, but will also inhibit microorganisms within the compressed air system. Heatless adsorption or desiccant dryers remove moisture by passing air over a regenerative adsorbent material which strips moisture from the air. This process is known as Pressure Swing Adsorption. Dryers of this type are extremely efficient and provide typical pressure dew points of -40°F (-40°C) or -100°F (-73°C) pdp. This means that for water vapor to condensate into a liquid, the air temperature would have to drop below -40°F (-40°C) to -100°F (-73°C) respectively. Note that the actual air temperature after an adsorption dryer is not the same as its dew point. The desiccant material is contained in two separate but identical pressure vessels, commonly referred to as “twin” towers. As the saturated compressed air flows up through the “on line” tower, its moisture content adheres to the surface of the desiccant. The dry compressed air is then discharged from the chamber into the distribution system. An onboard solid state controller automatically cycles the flow of compressed air between the towers. While the “on line” tower is drying, the “off line” tower is regenerating. Regeneration, sometimes referred to as purging, is the process by which moisture accumulated during the “on line” cycle is stripped away during the “off line” cycle. As low pressure dry purge air flows gently through the regenerating bed, it attracts the moisture that had accumulated on the surface of the desiccant during the drying cycle and exhausts that moisture laden air to atmosphere. Functions of Heatless Regenerative Desiccant Dryers • Mounting Foot: mounting holes, optional wall bracket • Mounting : 38″ • Primary Voltage: 120V1ph60Hz • Flow SCFM: 3 to 20 • Flow m³min: .085 to .57 • Approximate Purge: 15% • Maximum inlet or ambient air temperature: 122°F or 50°C • Maximum Pressure: 175 psi or 21 bar • Minimum Pressure: 58 psi or 4 bar • Certifications Designed in accordance with ASME VIII Div.1; CSA UL CRN approved; CE Marked (PED, EMC, LVD); IP66 NEMA 4 • Dew point Range: -40°F or -40°C • Features Coalescing pre-filter and after-filter included; electronic control timer; fixed LED display for service indication (12, 000 hours continuous use) easily serviced IP66 NEMA 4; integrated desiccant cartridges • Weight: 24 to 62lbs or 11 to 28kg
The WDV3 Electrical Drain is designed to remove condensate from compressors, compressed air dryers and receivers up to any size, type or manufacturer. The WDV3 offers true installation simplicity and it is recognized as the most reliable and best performing condensate drain worldwide. The large orifice in the direct acting valve, combined with its sophisticated timer module ensure many years of trouble-free draining of condensate. Benefits Does Not Air-Lock During Operation. Compressed Air Systems Up to Any Size. Also Available In Stainless Steel. The Direct Acting Valve Is Serviceable. Suitable for All Types of Compressors. TEST (Micro-Switch) Feature. High Time Cycle Accuracy. Large (4.5mm) Valve Orifice.
The versions of the HYDAC safety and locking block SAF, its special versions and the DSV10 as a simple variant of the SAF10, are practical hydraulic accessories for blocking and relieving hydraulic accumulators or consumers. They are in compliance with safety regulations in accordance with DGRL9723EG, DIN EN 982, EN 14359 and the regulations of the Ordinance on Industrial Safety and Health [Betriebssicherheitsverordung (BetrSichV)]. The optimum combination of the safety and shut-off blocks considerably simplifies the connection between the consumer and the hydraulic system and offer the following exemplary advantages: Minimum of space and maintenance, Minimum of installation required (1 SAF replaces as a rule up to 10 individual pipe connections), considerable reduction of installation time, adapters for various accumulator types and additional valves (pilot-operated check valves, flow control valves, etc).