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2 VALVES VAL-200 For further information www.norgren.com 4-Port/2-Position (4-Way) This 4-way valve has a normally closed and a normally open 3-way valve element in a common body. Both elements are actuated simultaneously by a single operator. The valve body has an inlet, exhaust, and two outlet ports. In the normal position, pressurized air is directed to one outlet port and air is exhausted from the second outlet port. In the actuated position, the connections are reversed. Typical applications include control of double acting cylinders and reversible air motors. This valve is available with an optional air or solenoid momentary signal operator. Momentary signal operators are used when it is desirable to control the valve with two alternately applied momentary signals. The first signal shifts and holds the valve poppets in the actuated position; the second allows the poppets to return to the normal position. Flow Diagrams with Single and Momentary Signal Operator The 4-port/2-position (4-way) valve is also available with an optional air or solenoid twin operator, which allows independent operation of each valve element. NORMAL ACTUATED Inlet Open to Cyl. 2 Inlet Open to Cyl. 1 Cyl. 1 Open to Exh. Cyl. 2 open to Exh. CYL 1 IN CYL 2 EXH CYL 1 IN CYL 2 EXH NCA4-p05E-1 2-Port/2-Position These 2-way valves have an inlet and outlet port and are used as shutoff valves that open or close an air line. They are available in normally closed or normally open models. The normally closed model blocks flow when in its normal position, and permits flow when it is actuated. The normally open model permits flow when in its normal position, and blocks flow when actuated. Typical applications include on-off control of main plant air, air to branch lines, systems and air motors. Flow Diagrams 3-Port/2-Position These 3-way valves have an inlet, outlet, and exhaust port and are typically used to pressurize and then exhaust air from such devices as single-acting cylinders. They are available in normally closed or normally open models. The normally closed model exhausts air from the device when in its normal position, and pressurizes the device when actuated. The normally open model pressurizes the device when in its normal position and exhausts air from the device when actuated. The normally closed valve is available with two options: a position indicator pin and an air or solenoid momentary signal operator. The indicator pin can be used to operate a switch or other device to provide a signal for a control circuit. The momentary signal operator is used when it is desirable to control the valve with two alternately applied momentary signals (first signal shifts and holds the poppet; the second allows the poppet to return to its normal position). Flow Diagrams NORMAL ACTUATED Normally Closed Normally Open 3-Port/2-Position (Multi-Directional) These 3-way valves can be used in four different ways — as a distributor, directing air first to one port, then to another; as a selector, directing first high, then low pressure air (or vacuum) to the same outlet; as a standard 3-port/2-position normally closed valve; and as a standard 3-port/2- position normally open * valve. Multi-directional valves are the only poppet valves with which speed controls can be installed in the exhaust port. Flow Diagrams NORMAL ACTUATED Distributor Normally Closed Normally Open * * Normally open valves require an external pilot supply. Pressure to Port A Inlet Blocked Inlet Blocked Pressure to Port A Pressure C to Port A Pressure B to Port A Pressure to Port C Pressure to Port B Inlet Blocked Pressure to Port B Pressure to Port B Inlet Blocked A (IN) B (OUT) A (IN) B (OUT) NCA4-p04E-1 A (IN) B (OUT) A (IN) B (OUT) NCA4-p04E-2 Normally Closed Normally Open NORMAL ACTUATED Inlet Blocked Pressure to OUT Port Pressure to OUT Port Inlet Blocked IN OUT EXH IN OUT EXH NCA4-p04F-1 IN OUT EXH IN OUT EXH NCA4-p04F-2 A (IN) B (OUT) C (OUT 1) A (IN) B (OUT 2) C (OUT 1) NCA4-p04G-1 B (IN 2) A (OUT) C (IN 1) B (IN 2) A (OUT) C (IN 1) NCA4-p04G-2 B (IN) A (OUT) C (EXH) B (IN) A (OUT) C (EXH) NCA4-p04G-3 B (EXH) A (OUT) C (IN) B (EXH) A (OUT) C (IN) NCA4-p04G-4 Selector (Two Pressure) Prospector Series Poppet Valves 1/4" to 2" Solenoid Pilot Actuated 2/2, 3/2, & 4/2 Inline Valves