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Gravity transfers comprise a 4-roller design using 1-3/8 inch diameter rollers with integrated hex shafts. A flexible design which allows for easy removal of the rollers not needed when integrating into a specific application. Available with zinc plated rollers and painted or stainless steel side support braces.
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A gravity valve is adapted to control the flow of a downhole fluid through the downhole tool. The gravity valve typically includes a plunger and a seat. The plunger embodies a substantially non-spherical end that is adapted to mate with a complementary receiving end on the seat. The increase surface area of contact between the plunger and the seat acts to improve the seal to reduce the stresses thereon, and improve the performance of the gravity valve in general. The components of the gravity valve are constructed of materials, which are selected based on the specific gravity of the materials in comparison with the specific gravity of the downhole fluid for a given application.
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The gravure lab presses laboratory printing center comprises of separate 12″ wide web gravure and flexographic presses. It access with unwind and power re-wind mounted on a solidly constructed 8 ft. long base.
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Gravure printing presses is an electronic shaft or mechanical shaft drive. It will provide zero-speed butt splice at running speed or flying splice. It has integral or sleeve type printing cylinders and doctor blade with double dual-strike pistons. It has automatic longitudinal and lateral registration control. It will produce accurate pre-registration and rapid correction of registration errors.
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The gravure production press model PGP 4530 allows production press with automatic edge guides for stock going into the press and also on rewind. It is mounted on a sturdy base plate. A drying tower over the press can be heated by electrical heaters, steam or piped in hot air.
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Gravure proofing press model SPG-3070 specifically designed to print roll stock or rigid board up to 60 point. It is also specifically designed for hazardous locations.
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Gray iron casting is used for different types of parts in variety of machines and structures. It is the most versatile of all foundry metals. Its high carbon content is responsible for ease of melting and casting in the foundry and for ease of machining in subsequent manufacturing. The low degree or absence of shrinkage and high fluidity provide maximum freedom of design for the engineer. Their tensile strength can be varied from less than 20,000 psi to over 60,000 psi and hardness from 100 to 300 BHN in the as-cast condition when there is suitable adjustment in composition and selection of casting methods. The hardness can be increased to H Rc 60 by heat treatment.
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