The AirTAC Airtac 4V Solenoid Valves 4V430E15BT is a genuine 5/3-way 5/3 double solenoid — exhaust center solenoid valve with 430E15BT ports and an effective area of 40.0 mm² (Cv 2.35). It is an internally piloted spool valve that directs compressed air to double-acting cylinders and actuators.
The AirTAC 4V430E-15BT is a 5/3-way double-solenoid valve with an exhaust center, built on the 4V400 body and delivered in a 1/2 in NPT configuration with a DC24V coil drawing 3.0 W from a sealed terminal box. When neither coil is energised, both cylinder ports A and B vent to exhaust, so the actuator floats free - a mechanic can push a Dia100 press ram or slide a fixture into place by hand between cycles, then pulse a solenoid to re-engage. With a pulse applied, the valve shifts and directs air to one side of a double-acting cylinder while the other side exhausts. Flow sits in the 4V400 large-bore class: 40.0 mm2 effective area (Cv 2.35) through the 5/3 spool, moving cylinders in roughly the Dia80-125 mm range. Shift response is 0.05 s or less and the valve cycles up to 3 times per second. The spool-type construction, IP65-rated terminal box and locking or non-locking manual override make it a dependable mid-stroke FLOAT valve for US-plumbed NPT circuits, and the 770 g aluminium body stacks onto a common base as part of an integrated manifold group.
| Model | Airtac 4V Solenoid Valves 4V430E15BT |
|---|---|
| Series | 4V400 solenoid valve (spool type) |
| Valve type | 5/3-way |
| Function | 5/3 double solenoid — Exhaust center |
| Port size | 430E15BT |
| Exhaust port | 430E15BT |
| Effective area (Cv) | 40.0 mm² (Cv 2.35) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Pilot type | Internal / external pilot |
| Operating pressure | 0.15 – 0.8 MPa |
| Proof pressure | 1.2 MPa |
| Max frequency | 3 cycle/sec |
| Response time | ≤ 0.05 s (activating) |
| Temperature | -20 to +70 °C |
| Body material | Aluminum alloy |
| Weight | 770 g |
Specifications follow the official AirTAC 4V series datasheet. Lubrication not required. Confirm coil voltage and thread (PT / NPT / G) against the product label before wiring.
| Effective area | 40.0 mm² |
|---|---|
| Flow coefficient | Cv 2.35 |
| Response time | ≤ 0.05 s |
| Coil power | AC 4.5 VA · DC24V 3.0 W · DC12V 2.5 W |
| Protection / insulation | IP65 (DIN40050), B-class |
| Voltage options | DC24V, DC12V, AC110V, AC220V |
| Manual override | Yes (locking / non-locking) |
Size the valve so effective area / Cv is not the bottleneck for your cylinder bore and speed. Undersized valves slow the actuator. Note 5/3 (center) versions have a smaller effective area than the 5/2 of the same body size.
| 4V | Solenoid valve, spool type, 4-series. |
|---|---|
| 4 | Body size (4V400) — sets port & flow. |
| 3 | Function: 1 = single 5/2, 2 = double 5/2, 3 = 5/3. |
| -430E15BT | Port thread: M5 / 06=1/8" / 08=1/4" / 10=3/8" / 15=1/2". |
Related: 4V410 (single), 4V420 (double), 4V430C/E/P (5/3 center). Add the voltage suffix when ordering.
Exhaust center lets a Dia100 press ram (about 400 kgf push at 0.5 MPa) float so operators can nudge the die into position by hand, then a DC24V pulse re-pressurises within 0.05 s to resume the stroke.
A Dia125 push cylinder delivers roughly 626 kgf at 0.5 MPa to kick logs onto a slat conveyor; the 1/2 in NPT ports and Cv 2.35 flow keep transfer strokes fast at up to 3 cycles per second.
Between pulses the floating center lets maintenance staff swing a heavy waste-sorting gate freely for jam clearing, with the terminal box giving IP65-protected wiring on the dusty line side.
Size in both directions. If your cylinder is below about Dia80 mm (roughly 256 kgf push at 0.5 MPa on a Dia80 bore), step down to the 4V300 body with its Cv 1.65 - it is cheaper and faster-cycling for that load. The 4V400 is the largest 4V body, so if Cv 2.35 still starves a Dia125 cylinder (about 626 kgf push at 0.5 MPa) or you need more than 3 cycles per second, move up to a larger AirTAC valve series or split the circuit across a manifold. Choose 30E when the mid-position should let the actuator drift for manual adjustment or free movement; choose 30C if the load must hold still at center, or 30P if both sides should stay pressurised. For a drop-in replacement, match five points on the old label: body size 4V400, function 30E, 1/2 in port with NPT thread, DC24V coil, and terminal-box electrical entry. A code reading 4V430E-15B or 4V430E-15BIG differs in thread or wiring and will not bolt onto the same piping without adapters.
Quick checklist
Flow: 40.0 mm2 effective area, Cv 2.35 through the 5/3 spool, with a maximum cycling rate of 3 cycles per second. Response (activating) time is 0.05 s or less. Operating pressure is 0.15-0.8 MPa with a 1.2 MPa proof pressure. The DC24V coil draws 3.0 W, insulation is class B and protection is IP65 (DIN40050). The aluminium-alloy body weighs 770 g, operates from -20 to +70 C, needs air filtered by a 40 um element, and requires no lubrication.
At center, both cylinder ports vent to exhaust, so a double-acting actuator floats free and can be moved by hand or by the load - ideal for manual jogging and setup work. It is not a load-holding position: a suspended or vertical load will drift or fall. Where guaranteed holding is required, fit pilot-operated check valves at the cylinder ports or a mechanical brake, and use the 30C closed-center version instead if the cylinder must stop dead at mid-stroke.
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