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Summary of Contents for Ross W70 Series
- Page 1 V alVeS W70 S erieS ROSS CONTROLS...
- Page 2 Single sub-base mounting • Micro-thin air bearing between spool and sleeve assures quick valve response • W70 Series - Suitable for vacuum service with or without external pilot supply • W74 Series - Suitable for vacuum service (with external pilot supply) DESCRIPTION...
- Page 3 Power Center Closed Center Open Center Voltage: W=24 VDC; Z=100-110/50, 100-130/60 VAC/Hz, e.g., W6577A2902Z. For other voltages, consult ROSS. Voltage: Z=100-110/50, 100-130/60 VAC/Hz. Sub-bases and manifold bases ordered separately, refer to page C5.14-C5.18. Valve Response Time – Response Time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to exhaust it to 10% of supply pressure.
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Page 4: Important Note
W7076C8331W 14.5 (6.5) #Voltage: W=24 VDC; Z=100-110/50, 100-130/60 VAC/Hz, e.g., W7076B2331Z. For other voltages, consult ROSS. Sub-bases and manifold bases ordered separately, refer to page C5.14-C5.18. Valve Response Time – Response Time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to exhaust it to 10% of supply pressure. - Page 5 W7076C8332W 15.8 (6.8) #Voltage: W=24 VDC; Z=100-110/50, 100-130/60 VAC/Hz, e.g., W7076B2332Z. For other voltages, consult ROSS. Sub-bases and manifold bases ordered separately, refer to page C5.14-C5.18. Valve Response Time – Response Time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to exhaust it to 10% of supply pressure.
- Page 6 Closed Center Open Center #Voltage: W=24 VDC; Z=100-110/50, 100-130/60 VAC/Hz, e.g., W7077B2906Z. For other voltages, consult ROSS. Sub-bases and manifold bases ordered separately, refer to page C5.14-C5.18. Valve Response Time – Response Time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to exhaust it to 10% of supply pressure.
- Page 7 Ambient/Media: 40° to 175°F (4° to 80°C) ANSI Size 2.5, 4 & 10: Minimum 15 psig (1 bar) Temperature For other temperature ranges, consult ROSS. Pilot supply pressure must be equal to or greater than inlet pressure. Flow Media Filtered air...
- Page 8 Ambient/Media: 40° to 175°F (4° to 80°C) ANSI Size 2.5, 4 & 10: Minimum 15 psig (1 bar) Temperature For other temperature ranges, consult ROSS. Pilot supply pressure must be equal to or greater than inlet pressure. Filtered air Flow Media...
- Page 9 Ambient/Media: 40° to 175°F (4° to 80°C) ANSI Size 2.5, 4 & 10: Minimum 15 psig (1 bar) Temperature For other temperature ranges, consult ROSS. Pilot supply pressure must be equal to or greater than inlet pressure. Flow Media Filtered air...
- Page 10 — — — 368B91 D368B91 — — — — #Voltage: W=24 VDC; Z=110-120 VAC, 50/60 Hz, e.g., 525K91-Z. For other voltages, consult ROSS. Port 5 Port 3 Port 1 (inlet) (exhaust) (exhaust) Z, Z1 Sub-Base Dimensions inches (mm) ANSI 1 ANSI 2.5...
- Page 11 Sub-Bases – Side Ported for ANSI Valves for Pressure Controlled Valves W70 & W74 Series Model Number ANSI Outlet Avg. C Size Port NPT Threads G Threads 500B91 D500B91 0.9 to 1.0 501B91 D501B91 0.9 to 1.0 Sub-base for ANSI Size 4 474K91 D474K91 2.0 to 2.5...
- Page 12 — — — 371B91 D371B91 — — — — Voltage: W=24 VDC; Z=110-120 VAC, 50/60 Hz, e.g., 529K91-Z. For other voltages, consult ROSS. ANSI Size 4 ANSI Size 1 & 2.5 Port 5 Port 1 Port 3 (exhaust) (inlet) (exhaust)
- Page 13 — 10 to 11 depending on the particular Voltage: W=24 VDC; Z=110-120 VAC, 50/60 Hz, e.g., 531K91-Z. For other voltages, consult ROSS. type of valve. Manifold Note: The port positions of the solenoid controlled and the pressure controlled manifolds are not the same. For this reason these stations cannot be mixed in the same installation.
- Page 14 4.02 (102) (inlet) (exhaust) Valves and manifold stations can be assembled by ROSS to precise specifications. The assembly is then ready for integration into your system. ASSEMBLED MANIFOLDS For detailed information about such assemblies, consult your ROSS Distributor or call ROSS in the U.S.A.
- Page 15 for ANSI Valves Accessories W70 & W74 Series Interposed Pressure Regulators Both single and double interposed regulators are available for valves with C ratings up to 4.2. A regulator is bolted to the valve’s sub-base or manifold station, and the valve is then bolted to the regulator. This mounting method allows the valve to be removed and replaced without disturbing the regulator.
- Page 19 All products are, during their respective warranty periods, warranted to be free of defects in material and workmanship. The ROSS Group’s obligation under this warranty is limited to repair, replacement or refund of the purchase price paid for products which the ROSS Group has determined, in its sole discretion, are defective.
- Page 20 Other literature is available for engineering, maintenance, and service requirements. If you need products or specifications not shown in this catalog, please visit ROSS' website, contact ROSS or your ROSS distributor. The ROSS Support Team will be happy to assist you in selecting the best product for your application.
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