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Gate Valves |
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| RGV stainless steel vacuum gate valves incorporate patented
C-Loc® gate valve locking technology. No contact is made between the valve body and the locking mechanism, a feature
which markedly decreases vibration and insures smooth valve operation. RGV valves are designed for use in high vacuum
load-lock systems used in semiconductor processing. Low outgassing characteristics can be attributed to fusion welded
300 series stainless steel body and AM-350 stainless steel nesting bellows,
small cross-section O-rings and the elimination of blind internal cavities.
MDC RGV gate valves are offered in four standard sizes ranging from 1 x 6.3" (25 x 160mm) to 1 x 16.5" (25 x 420mm)
rectangular port dimensions. Flange-to-flange body thickness is 2.75" (70mm). Gate valve actuators are available in both
manual and electropneumatic configurations. The gate and carriage can be removed through the valve’s bonnet flange for
gate seal replacement, cleaning, etc., without disassembling the valve body from the system. Custom design valves are |
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Pneumatic actuators are fitted with mechanical position indicators which indicate fully open and fully closed positions. This MPI system consists of two single pole, double throw micro switches fitted with integral hinged lever and roller actuators. Each micro switch is wired in a normally open position via a seven pin circular threaded connector. Mating female cable connectors are included. Normally closed switch wiring is available on request. Precise positioning of micro switches is made possible by a patented vernier adjustment mechanism only available on MDC gate valves. Pneumatic actuators are equipped with dual impulse Herion 24 VDC air control solenoid valves. All solenoid valves are fitted with DIN type connectors that conform to international standards. DIN connectors provide simplicity, convenience and fast, easy electrical installation. Solenoid valves are designed for use with compressed air from 0 to 125psig. Air should be clean and uncontaminated. When in doubt, install a filter with filtering capacity of 40 microns. Periodically remove and clean or replace filter element. |
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