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Summary of Contents for Yoshitake PD-1
- Page 1 Air Operated Valve Control Valve...
- Page 2 Step 0 Type/Structure/Features Please refer to this for structure and feature of Air Operated Valve and Control Valve. Step 1 Selection Please refer to the ID chart to select the right products depending on the intended of uses. Confirm the additional details on the product page.
- Page 3 No rubber material (Stainless steel, PTFE) DP-100100F MD Series Easy maintenance DPDD Series Manual operation MD Series On/Off switch MD Series Usable in explosion-proof area DP-34N PD Series Less scale problems PD Series MD Series Lightweight, compact and space-saving DD Series DP Series www.yoshitake.jp...
- Page 4 Step Air Operated Valve ID-Charts Working Max. Model Type Fluid Material Press. Temp. Connection Size Feature Page (MPa) (˚C) PD-1 CAC406 JIS Rc 15-25A · Screwed type Steam, Diaphragm Air, 0-1.0 180˚C type Water, Oil PD-2 FC200 JIS 10KFF 15-50A ·...
- Page 5 : Fluid temperature [°C] V : Max. liquid flow rate [m Cv : Cv value of each nominal size Iv : Viscosity index Mcst: Viscosity [cSt] Cv value table Nominal size 100A Model PD-1, 2 PD-3 17.4 27.8 40.6 63.8 CT-1 www.yoshitake.jp...
- Page 6 5. Avoid over-tightening of screw and excessive stress imposed from the piping in order to prevent malfunction due to the distortion of the body. 6. Secure a space required for disassembly or removal of the product at the time of maintenance and inspection. · Installation posture <PD-1, 2> <PD-3> O.K. O.K. O.K.
- Page 7 Steam amount: Maximum (100%) Maximum Driving part Increase Steam amount: Temperature: Open signal Increase Slow increase Fully close Steam amount: Temperature: 4 mA Recommend the upright installing position (0%) Flow rate 0 Stable for the control valve (top drive unit). www.yoshitake.jp...
- Page 8 [For water level control] Water level: 20 mA Fully open Quick increase (100%) Pressure gauge Water level: Increase Open Slow increase signal Water sensor CT-1 Control valve Controller Fully close Water level: 4 mA (0%) Stable DC: 4-20 mA Input Signal Tank www.yoshitake.jp...
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Page 9: Specifications
Air Operated Valve PD-1,2 Features 1. Usable for air, water, oil and steam. 2. No chattering due to closing action against the flow direction of fluid. 3. Excellent durability of stainless steel valve seat. 4. Excellent durability of synthetic rubber diaphragm. - Page 10 PD-1, 2 Dimensions (mm) and Weights (kg) ·PD-1 Nominal size Cv value Weight Rc 1/2 Rc 3/4 Rc 1 ·PD-2 Structure is a little different depending on size. Nominal size Cv value Weight φA 28.5 29.0 30.0 www.yoshitake.jp...
- Page 11 25A *1 Rc 1 34.5 G 1/8 25A *2 Rc 1 G 1/4 Rc 1-1/4 G 1/4 Rc 1-1/2 G 1/4 Rc 2 G 1/4 *1 Max. working pressure is 0.9 MPa. *2 Max. working pressure is 2.2 MPa. www.yoshitake.jp...
- Page 12 V-PTFE packing Diaphragm EPDM Electro-pneumatic positioner (4-20 mA DC) Accessories Air regulator *1 Valve opens when the value of input signal increases. · Available with ASME or EN flanged. *2 Please apply air pressure between 0.4-1.0MPa for air regulator. www.yoshitake.jp...
- Page 13 · Excellent performance even under conditions of frequent · Quick and accurate response. vibrations. · Good efficiency with small air consumption. · With feedback analog signal output terminal. · Easy zero/span adjustment. · Good efficiency with small air consumption. · Auto-calibration with easy operation. www.yoshitake.jp...
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Page 14: Maintenance And Inspection
Please refer to the manual attached to the product for procedures for installation and operation. Disassembly and maintenance, inspection Air operated valve PD-1, PD-2 Disassembly 1. Remove diaphragm cover on operation part and remove diaphragm. 2. Since valve and diaphragm plate are connected by bolt, pass a bar through hole for fixing valve, loosen bolt by bar spanner, and remove plate. - Page 15 (3) Before disassembly, be sure to discharge the pressure inside of the product, piping and equipment completely (after cooling down the product in case of high-temperature fluid). Also do not touch it with bare hands directly till it is closed. www.yoshitake.jp...
- Page 16 Gland nut or bonnet nut is loosened....Retighten the nut. In case the leakage is still Leakage from found, replace packing. gland packing Hardening of gland packing or bonnet gasket..Replace gland packing or bonnet gasket. and bonnet gasket. www.yoshitake.jp...