DWYER INSTRUMENTS, INC.| www.dwyer-inst.com502 Valves, Diaphragm Pulse VALVES Size 3/4˝ 3/4˝ 3/4˝ 3/4˝ 1˝ 1˝ 1˝ 1˝ 1-1/2˝ 1-1/2˝ 1-1/2˝ 1-1/2˝ The Series DCS/RDCS Springless Dust Collection Valves are ideal for use with the Series DCT1000 and Series DCT500 duct collection timer boards. A springless design offers not only durability, but also reliability for an exceptional cleaning pulse. Both the Series DCS and RDCS have the option for either coupling or NPT connections. The coupling connection allows for a quick and simple installation. Only the stub pipe and blowtube need to be cleaned and deburred before the valve is fit into position. The “T” Series DCS has female threaded connections and the “C” Series DCS has a coupling connection. Both the “T” and “C” versions have a 90° angle between the inlet and outlet: the most suitable configuration for pulse valve applications. The valves are offered in both integrated and remote coil configurations. FEATURES • Thermoplastic polyurethane diaphragm for longer life • High flow factor for effective cleaning • Unique diaphragm design eliminates spring • Valve can be mounted in any position • Quick on & off response time SPECIFICATIONS Service: Compatible gases, filtered and oil free. Wetted Materials: Body: Aluminum; Diaphragm disc: Thermoplastic polyurethane; Solenoid seals: NBR. Other Materials: Cover: Aluminum; Body bolts: Zinc plated SS; Solenoid: Nylon. Pressure Limits: Min. of 4.4 psi (0.3 bar), max. of 124.7 psi (8.6 bar). Temperature Limits: Ambient: -4 to 140°F (-20 to 60°C); Operating: -4 to 185°F (-20 to 85°C). Power Requirements: 110 VAC, 220 VAC, or 24 VDC for DCS models. Power Consumption: 12 W; Inrush: 17 VA; Holding: 14.5 VA for DCS models. Electrical Connection: DIN connection for DCS models. Enclosure Rating: NEMA 4X (IP65) for DCS models. Process Connection: See model chart. Mounting Orientation: Any position. Agency Approval: CE. Springless Diaphragm Valves Pulse Valve, Ideal for Dust Collection Systems and Bag Houses Series DCS/RDCS Model RDCS20T RDCS20C DCS20T1D DCS20C1D RDCS25T RDCS25C DCS25T1D DCS25C1D RDCS35T RDCS35C DCS35T1D DCS35C1D Solenoid Remote Remote Integral* Integral* Remote Remote Integral* Integral* Remote Remote Integral* Integral* Connection NPT Coupling NPT Coupling NPT Coupling NPT Coupling NPT Coupling NPT Coupling Number of Diaphragms 1 1 1 1 1 1 1 1 1 1 1 1 *110 VAC with DIN Connector Construction Size Connection Voltage DCS RDCS 20 25 35 T C 1D 2D 3D Integrated coil Remote coil 3/4˝ 1˝ 1-1/2˝ NPT Coupling 110 VAC DIN (for integrated coil only) 220 VAC DIN (for integrated coil only) 24 VDC DIN (for integrated coil only) Series DCS/RDCS Model Guide RDCS35T RDCS35C DCS35C1D RDCS20C NEMA 4X (IP65) Solenoid Coil Integrated Solenoid Stem Robust Die Cast Aluminum Body Unique Diaphragm Design Eliminates Need for a Spring Solenoid Cover Diaphragm Body DIAPHRAGM VALVE CONSTRUCTION Scan here to watch product video ACCESSORIES A-237,Muffler BDA-5030-Q,3/4˝ DCS/RDCS Pulse Valve Replacement Diaphragm BDA-5230-Q,1˝ DCS/RDCS Pulse Valve Replacement Diaphragm BDA-5430-Q,1-1/2˝ DCS/RDCS Pulse Valve Replacement Diaphragm RSV1D-COIL,110 VAC DIN Replacement Solenoid Coil RSV2D-COIL,220 VAC DIN Replacement Solenoid Coil RSV3D-COIL,24 VAC DIN Replacement Solenoid Coil Cv Factor (gal/min) 14 14 14 14 23 23 23 23 42 42 42 42 502_Layout 1 7/8/14 9:45 AM Page 502Valves, Diaphragm Pulse VALVES 503 Operating Principle The valve is divided into two chambers by a diaphragm. These upper and lower chambers are connected by a small air passage so both chambers see the same pressure. When the exhaust is closed air cannot vent out of the upper chamber and the valve stays closed as shown in Figure 1. When the exhaust on the upper chamber is opened the air pressure decreases on top of the diaphragm allowing the air pressure on the bottom to force open the valve by pushing the diaphragm up as shown in Figure 2. When the valve opens an abrupt air blast comes through the valve outlet and is directed by the dust collector to the dirty filter. The air pulse then blows out through the filter from the inside blowing the particulate accumulation off of the filter to clean it. After the air pulse the pressure in the upper and lower chamber will equalize and the diaphragm will return to the closed position. The valve exhaust port is controlled by either an integral or remote solenoid. AIR INLET DIAPHRAGM FLOW OUTLET EXHAUST Figure 1: Closed Position Figure 2: Open Position B E D A B E D A F F DCS Dimensional Chart CC Model RDCS20T RDCS25T RDCS35T RDCS20C RDCS25C RDCS35C Connection NPT Coupling A (mm) 3-1/8˝ (79.38) 3-19/64˝ (83.74) 4-11/32˝ (110.33) 4-9/64˝ (105.17) 4-7/16˝ (112.71) 5-23/64˝ (136.13) B (mm) 2-47/64˝ (69.45) 3-7/32˝ (81.76) 3-43/64˝ (93.27) 3-25/64˝ (86.1) 4-43/64˝ (118.67) 5-21/64˝ (135.33) C (mm) 2-45/64˝ (68.66) 2-53/64˝ (71.83) 3-1/2˝ (88.9) 2-45/64˝ (68.66) 2-53/64˝ (71.83) 3-1/2˝ (88.9) D (mm) 1-37/64˝ (40.08) 1-55/64˝ (47.23) 2-17/32˝ (64.29) 2-39/64˝ (66.28) 3˝ (76.20) 3-35/64˝ (90.09) E (mm) 1-15/64˝ (31.35) 1-31/64˝ (37.70) 1-15/32˝ (37.31) 1-51/64˝ (45.64) 2-49/64˝ (70.25) 2-61/64˝ (75.01) RDCS Dimensional Chart Model DCS20TxD DCS25TxD DCS35TxD DCS20CxD DCS25CxD DCS35CxD Connection NPT Coupling A (mm) 3-1/8˝ (79.38) 3-19/64˝ (83.74) 4-11/32˝ (110.33) 4-9/64˝ (105.17) 4-7/16˝ (112.71) 5-23/64˝ (136.13) B (mm) 2-47/64˝ (69.45) 3-7/32˝ (81.76) 3-43/64˝ (93.27) 3-25/64˝ (86.10) 4-43/64˝ (118.67) 5-21/64˝ (135.33) C (mm) 2-45/64˝ (68.66) 2-53/64˝ (71.83) 3-1/2˝ (88.9) 2-45/64˝ (68.66) 2-53/64˝ (71.83) 3-1/2˝ (88.9) D (mm) 1-37/64˝ (40.08) 1-55/64˝ (47.23) 2-17/32˝ (64.29) 2-39/64˝ (66.28) 3˝ (76.20) 3-35/64˝ (90.09) E (mm) 1-15/64˝ (31.35) 1-31/64˝ (37.70) 1-15/32˝ (37.31) 1-51/64˝ (45.64) 2-49/64˝ (70.25) 2-61/64˝ (75.01) F (mm) 2-5/32˝ (54.77) 2-11/32˝ (59.53) 2-3/8˝ (60.33) 2-11/64˝ (55.17) 2-23/64˝ (59.93) 2-3/8˝ (60.33) Springless Diaphragm Valves Dimensional Chart Series DCS/RDCS CONTACT US| U.S. 219/879-8000 | U.K. (+44) (0)1494-461707| A.U. (+61) (0) 2 4272 2055| China +852-23181007 503_Layout 1 7/8/14 9:44 AM Page 503Next >