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Fluid Power

Fluid Power


A corrugated metal insert with spring-like memory gives GORE-TEX(R)Dynacore(TM)PTFE gaskets extra tightness and high blowout resistance. The PTFE expands in all directions, resists creeping, and is dimensionally stable.

W.L. Gore and Associates, 201 Airport Rd., Elkton, MD 21922-4817; FAX (410) 392-4817; .


Anodized aluminum fittings for 3/4- to 2- inch diameter suction cups offer five connection options, enabling several functions within the same cup.

PIAB Vacuum Products, 55 Accord Park Dr., Rockland, MA 02370; FAX (781) 792-0574; .


Series 80 5/8- inch diameter solenoid valves are available with a solid-state timer for ON/OFF cycle applications. Applying power to the valves' input terminals initiates the OFF cycle. At the end of the preset OFF time, the solenoid energizes and the ON cycle begins. After the preset ON time, power to the solenoid is removed and a new cycle begins. The timer provides OFF times of 1 to 45 minutes and ON times of 0.25 to 25.0 sec with pushbutton manual override.

Peter Paul Electronics, Box 1180, New Britain, CT 06050; FAX (860) 223-1734; .


G-Series industrial heavy globe control valves suit process applications having large lines and high-pressure drops. Configuration includes: top and bottom post guiding, two- and three-way bodies, cage or unbalanced contour plug trim, optional hard or soft seats, threaded and pinned plug/stem connections, adjustable V-ring packing, and stem wipers.

Powers Process Controls, 3400 Oakton St., Skokie, IL 60076; .


The DRYFLO Model GDP 250 dry vacuum pump incorporates hook and claw rotors mounted on two shafts. As they move, the rotors push gases through the pumping stages without means of mechanical compression, resulting in a unit that runs cooler than conventional dry pumps. Rated at 250 cfm, the pump offers a modular design for easy upgrading and combining with boosters and condensers.

Graham Corp., Box 719, Batavia, NY 14021; FAX (716) 343-1097; .


Self-draining and crevice-free, the model MK98 modulating control valve maintains sanitary conditions whether it is mounted horizontally or vertically. The unit comprises a diaphragm control valve, actuator, yoke, and diaphragm. The body and stem are 316L stainless steel; the actuator and yoke are epoxy-coated steel; the diaphragm is Teflon-covered EPDM reinforced with polyester. Valves are available in 1/2, 3/4, and 1 inch sizes with a variety of end connections.

Jordan Valve, 3170 Wasson Rd., Cincinnati, OH 45209; FAX (513) 871-0105; .

Valve manifolds

Type 8640 modular manifold pneumatic control systems feature a snap-together design for easy customization with electrical and pneumatic interfaces. Valves come in 10, 18, and 32 mm sizes; valve control functions include 3-way valve N.C., 4-way valve (4/2), and 4-way valve (5/2). Both the valves and the manifold modules are made of thermoplastic that resists corrosion in washdown conditions. Electrical interfaces include Cable Plug 2506, Multipin Connector, DeviceNET, PROFIBUS DP, CAN Bus, INTERBUS S, and ASI Bus.

Burkert Contromatic Corp., 2602 McGaw Ave., Irvine, CA 92614; FAX (949) 223-3198; .


Made from a proprietary combination of silicone elastomers, Versilic(TM)High Strength Pressure Tubing, Formulation SPX-70 I.B. resists temperatures from -112 to 320F and withstands repeated CIP and SIP cleaning sterilization. The taste- and odor-free tubing has a smooth inner surface, which reduces the risk of particulate entrapment and microscopic buildup during fluid transfer.

Saint-Gobain Performance Plastics, 150 Dey Rd., Wayne, NJ 07470-4699; FAX (973) 696-4056; .


The Pneumatic Closed Loop Proportional Valve with on-board electronics goes to an automatic fail-safe position if the supply voltage drops below 18V dc. A direct-acting solenoid operates the 5/3 closed-center valve, and a position transducer connected to the armature delivers an output signal according to the position of the valve spool. Settings are calibrated at the factory, and each valve requires only one cable.

Bosch Automation Technology, Box 2025, Racine, WI 53406-2025; FAX (262) 554-7117; .


The PSCAL pneumatic cylinder continuously monitors piston position for the full cylinder stroke. The noncontact position-sensing transducer withstands shock and vibration, and is available with analog or digital outputs.

Miller Fluid Power, 800 N York Rd., Bensenville, IL 60106; FAX (630) 766-1098.


A 1/8 NPT male pipe inlet lets users orient the outlet port of this normally open valve and also allows rigid mounting in existing manifolds or piping. Part of the company's Minimatic brass valve line, the unit also has a 15/32-32 nose thread for panel mounting.

Clippard Instrument Laboratory, 7390 Colerain Rd., Cincinnati, OH 45239; FAX (513) 521-4464; .


Designed for food applications in metal-walled tanks or vessels, the M3850 single-point conductivity switch sends a signal to a controller when liquid touches the tip of its polypropylene probe. The socket-mounted controller then turns the liquid supply on or off. Features include no moving parts and extremely low current draw.

Madison Co., 27 Business Park Dr., Branford, CT 06405; FAX (203) 481-5036; .

Flange adapters

The width of ADAFLANGE(TM) Unified Code U61 2- and 4-bolt adapters lets users locate ports closer together than is possible using SAE Code 61 or Code 62 4-bolt split-flange adapters. Fastening is outside the wetted flow area, minimizing the structure required to support internal pressure.

Adaconn + Inserta, 538 Township Line Rd., Blue Bell, PA 19422-2798; FAX (215) 643-4017; .

Hydramotor actuators

The AH Series Hydramotor actuators with standard Indoor/Outdoor enclosure, meet Type 4 Watertight requirements, as well as Types 2, 3, 3S, 12, and 13 General Purpose, Driptight, and Dusttight requirements. They are used with V710 gas valve bodies through 4-inch pipe size to provide on-off, low-high-off, and modulating control of the main gas line to industrial and commercial burners.

Automatic Switch Co., 50-60 Hanover Rd., Florham Park, NJ 07932; FAX (973) 966-8448; .

Piston pumps

The PAVC Series variable volume pressure-compensated piston pumps are recommended as a solution for mobile applications requiring rugged dependability and high speeds, such as forklifts, cranes, bulldozers, and backhoes. The series is capable of 3,000 rpm. An internal supercharger enables the pump to reach speeds without the use of an external charge pump. Features include a built-in air bleed for quick priming, full pressure of 3,000 psi on water glycol and other exotic fluids, and through-shaft capability for tandem operation.

Parker Hannifin, 8940 Tyler Blvd., Mentor, OH 44060-2186; FAX (800) 892-1008; .

Pinch valve

The 920 high-flow pinch valve is a pneumatically operated pinch valve that features the ability to close tubes with ODs up to 7/8 inch and IDs up to 3/4 inch. The valve is used in areas that include applications where zero hold-out, chemical inertness, sterility, resistance to high temperatures, and high flow are required. It features an adjustable lockable flow control to set the flow rate. A variety of nozzles and nozzle adapters are available.

Tridak, 1120 Federal Rd., Brookfield, CT 06804; FAX (203) 775-4376; .

Peristaltic pump

Delivering flow rates of 0.06 to 70 ml/min at pressures up to 100 psi, this is reportedly the first peristaltic pump to use rigid PTFE tubing. It is recommended for use in challenging pharmaceutical and biotech applications where organic solvents, caustic solutions, and high-purity biologicals must be pumped. It features an operating range of 1 to 300 rpm, and is compatible with most Masterflex L/S(TM)drives. The tubing is available exclusively from this company.

Barnant Co., 28W092 Commercial Ave., Barrington, IL 60010; FAX 847-381-7053; .

Diaphragm pump

The E2 2 Aluminum Bolted Pump joins the Elima-Matic(R)non-stalling, non-icing, lubrication-free air diaphragm pumps. The bolted design is intended to provide sealing capabilities for leak-free operation with liquids of low specific gravity or low viscosity. The smooth flow-through design increases flow and particle size passage up to 7/16 inch. It features NPT or BSP female connections for leak-free installation. No fastener nuts are needed.

Versa-Matic Pump, 6017 Enterprise Dr., Export, PA 15632; FAX 724 327 4300; .

Mechanical clamping

More than 240 products and 40 product varieties make up this line, complimenting the company's brands of hydraulic workholding components and systems. The mechanical components can be used on basic equipment. They can also combine with other hydraulic and mechanical components to perform special tasks as part of a workholding system. Major categories include: support elements, claiming, locating, and operating components.

Enerpac Workholding, 6101 N. Baker Rd., Milwaukee, WI 53209; FAX (262) 781-1049; .

Ground coupling

This company says that improved thread designs and sealing surfaces have been added to its Aeroquip 145-155 Series Soft-Seal line of quick disconnect couplings for aircraft ground service equipment. The couplings feature a bonded soft seal in the tubular valve, which decreases leaks and increases service life over conventional metal-to-metal seals, and makes them easier to use and less prone to cross threading.

Aeroquip, 1695 Indian Wood Circle, Maumee, OH 43537; .

Flow meters

This company's flow meters for hydraulic systems using phosphate ester fluids are now available in more sizes and material options. Improvements in the new design are said to offer increased reliability, more versatility, and longer service life. Applications include the monitoring of hydraulic systems in aircraft, industrial plants, and aluminum mills to prevent catastrophic failure and guide preventative maintenance programs.

Hedland Flow Meters, Box 044780, Racine, WI 53404; FAX (414) 639-2267.


The SRE electropneumatic pressure-regulating valve operates on the twin-poppet-valve principle to positively pressurize and vent the pilot control chamber. Features include internal pneumatic feedback, rapid response, low air consumption, 2,500 l/min maximum flow rate, and a 0 to 10 bar operating range.

Hoerbiger-Origa, 100 West Lake Dr., Glendale Heights, IL 60139; FAX (630) 871-1515; .

Solenoid valves

This compact Teflon Bellows solenoid valve is said to be customizable for a variety of uses. The valves are pressure balanced and designed for quick-opening, normally-closed applications. Inlet pressure is rated at 140 psi, and back pressure is rated at up to 70 psi, depending on orifice size. The valve can be machined square for manifold-type mounting, round for standard piping systems, or in special shapes to fit specific enclosures.

Plast-O-Matic Valves, 1384 Pompton Ave., Cedar Grove, NJ 07009; FAX (973) 256-4745; .

Control valves

H-Series Compact Performance Globe Control valves are designed to serve as all-purpose, compact globe platforms for small valves in industrial and commercial applications. The valves are available in sizes from one to four inches and feature raised-face flanges and stainless steel trim. Other features include stem wipers for extended packing life and a two-point stem guiding to eliminate trim vibration.

Powers Process Controls, 3400 Oakton St., Skokie, IL 60076; .

Nitrogen generator

Compact, maintenance-free nitrogen gas generators offer a range of flow rates and purities, and can be customized for specific applications.

Peak Scientific Instruments, 1300 W Belmont Ave., Chicago, IL 60657; FAX (773) 880-2353.

Fountain pumps

RF 400 and RF 600 Fountain pumps are intended for use in small fountains with vertical waterheads and other low volume applications. The 400 has an upright design which is recommended for narrow basins and can pump 95 gal/hour and has a waterhead of 2.4 ft. The 600 is meant for taller fountains, with the ability to pump 160 gal/hour and has a waterhead of 3.7 ft.

Rena OEM Sales, 4425 Randolph Rd. Suite 215, Charlotte, NC 28211; FAX (704) 364-9272; .

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