Cylinder valves solenoid

Remotely operated cylinder valves are normally of the pneumatic or solehoid types Solenoid valves are popular on the compressed natural gas (CNG) ftiel tanks on vehicles where opening and closing the valve is accomplished... 

Air—electric samplers can be installed directly in the pipe wall. One type of Hquid sampler is operated by a solenoid valve that activates an air cylinder. A shaft is moved in and out of the pipe by this cylinder and samples are expeUed into a container below the sampler. Sample volumes of from 2—30 mL are possible. 

The slide is located in the compressor casting below the rotors, allowing internal gas recirculation without compression. Slide valve is operated by a piston located in a hydraulic cylinder and actuated by high-pressure oil from both sides. When the compressor is started, the slide valve is fuUy open and the compressor is unloaded. To increase capacity, a solenoid valve on the hydraulic hne opens, moving the piston in the direction of increasing capacity. In order to increase partload efficiency, the slide valve is designed to consist of two parts, one traditional shde valve for capacity regulation and other for built-in volume adjustment. 

FIG. 17-60 Reverse-pulse fahric filter (a) filter cylinders (h) wire retainers (c) collars (d) tube sheet (e) venturi nozzle (f) nozzle or orifice (g) solenoid valve (h) timer (/) air manifold (k) collector housing (/) inlet (m) hopper (n) airlock (o) iipperplenum, (Mikropul Division, US. Filter Coip.)... 

Control of the compressor is achieved by engaging the required number of cylinders. In. say. a 16-cylinder compressor if we engage only four cylinders, the compressor will run at 25 7r capacity, and if w c engage eight cylinders, the compressor will run at. 5()C< capacity. Electrically operated solenoid valves are provided for capacity control. Energy can be conserved by using static controls, as discussed in Section 6.15. 

Figure 2. Schematic of the apparatus. Key 1, He cylinder 2, O cylinder 3, CO cylinder 4, molecular sieve dryer 5, rotameter 6, fine-control needle valve 7, solenoid valve 8, pressure gauge 9, sand bath 10, preheater 11, reactor 12, IR spectrometer 13, gas bubbler and 14, automatic timer. 

Any residual material left in the shuttle is blanketed by a slow flow of dry nitrogen gas to prevent fouling of the shuttle between uses. Pneumatic cylinders, driven from solenoid valves that are controlled by a power- and event-controller, provide the shuttle motion, and position is confirmed by Hall Effect detectors on the pneumatic cyhnders and monitored by the power and event controller. 

The inner counter cylinder, made of metallized Mylar foil, is leak-tight relative to the outer counter. By means of two solenoid valves actuated by a differential mercury manometer, the outer and inner counters can be filled separately with a pressure differential on the partitioning foil of less than 0.5 cm. Hg. This pressure controller minimizes the danger of rupturing the partition. Two control circuit diagrams are shown in Figure 3. Figure 3A shows the mercury tube with electrical... 

Solenoid-operated valves. (11) Scale beam. (12) Booster device. (13) and (14) Load cells. (15) Microswitches. (16) Air cylinder. (17) Proximity switch. (18) Microprocessor. (19) Manual start switch. (20) Weight display of the most recent weighing. (21) Average weight display for all weighments of the current product batch. 

The electronic fuel injection (EFI) system meters the hydrogen to each cylinder. This system uses individual electronic fuel injectors (solenoid valves) for each cylinder and are plumbed to a common fuel rail located down the center of the intake manifold. Whereas the CVI system uses constant injection timing and variable fuel rail pressure, the EFI system uses variable injection timing and constant fuel rail pressure. 

Retraction systems automatically withdraw the furnace camera several feet back from the firebox if the systems sense loss of either water, air coolant, or high lens tube temperature. This gives the lens additional protection from the heated air that would blow against the lens if fans stopped and negative pressure changed to positive pressure. The retraction system is often air-operated, using an air-reserve tank as a purely pneumatic system component. This makes it totally independent of electricity. On loss of air pressure, water coolant, or high lens tube temperature, a solenoid valve opens and activates a rodless cylinder to withdraw the lens from harms way. The system will not return the camera to its inserted position until the problem is corrected. 

A-FEED GAS CYLINDER B-ORIFICE C-AP TRANSMITTER D-P.T.AP RECORDER E-MANOMETER F-SOLENOID VALVE G-N2 PURGE SYSTEM H-REACTOR BY-PASS LINE J-PREHEATER K-REACTOR L-MAGNETIC DRIVE M-SPEED CONTROL AND TACHOMETER N-CONDENSER P-KNOCKOUT POT Q-LIQUID COLLECTING TANK R-LIQUID LEVEL CONTROL... 

The balanced pressure sampling system. Figure 3.13, comprises a movable needle with two vents and a solenoid valve Vi in the carrier gas line. The heated needle, which has a hollow part permitting flow in either direction, moves in a heated cylinder and is sealed by three O-rings. In the standby position the lower needle vent is placed... 

Raising air is admitted by a norm ally-closed (closed when de-energized) solenoid valve located at the bottom of the cylinder, along with a solenoid operated,normally-open bleed valve and orifice and a spring operated relief valve. A large, normally open solenoid exhaust valve with an orifice is... 

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