RexrothR4120072613/2 Manual Shut-Off Valve – G1/2 Ports, 11,000 l/min, 0–16 bar, Lockable Rotary Actuator

Product Description

What this part is

AVENTICS AS3-BAV-G012-MAN 3/2 shut-off valve, Series AS3, sold under Bosch Rexroth material number R412007261. Valve Function: 3/2, shut-off with downstream exhaust. Actuation: mechanical, rotary switch. Port Thread: G 1/2 internal. Nominal Flow, Port 1 to 2: 11,000 l/min at 6 bar with 1 bar pressure drop. Nominal Flow, Port 2 to 3 exhaust: 130 l/min. Working Pressure: 0 to 16 bar. Ambient Temperature: −10 to +50 °C. Medium Temperature: −10 to +50 °C. Operating Medium: compressed air and neutral gases, maximum particle size 25 µm. Sealing Principle: metal on metal. Weight: 0.446 kg. Certification: suitable for ATEX zones 1, 2, 21 and 22.

Decoding the designation

AS3 — the AVENTICS AS3 air preparation series, the G1/2 size in the modular string.

BAV — shut-off valve, the German Absperrventil, the module that isolates the line and vents the downstream side.

G012 — G 1/2 port thread.

MAN — manually actuated, by rotary switch.

What these specs mean in practice

Nominal Flow: 11,000 l/min from port 1 to port 2. That is the figure that decides whether the isolator throttles a machine’s air main; on a G1/2 header it leaves headroom for a full AS3 filter, regulator and lubricator string downstream.

Valve Function: 3/2. Turning the switch closed cuts supply at port 1 and opens port 2 to the exhaust at port 3, so the downstream side vents rather than staying charged.

Actuation: rotary switch with provision for padlocks, taking a shackle up to 8 mm diameter. That is the lock-out point on a pneumatic supply.

Working Pressure: 0 to 16 bar, with a metal-to-metal seat. Sealing Principle: metal on metal, which is what carries the 16 bar top end and the ATEX rating rather than an elastomer seat.

Operating Medium: compressed air with particles no larger than 25 µm, at a pressure dew point at least 15 K below the ambient and medium temperature and no higher than 3 °C.

Mounting data

Body Width: 63 mm. Height C: 74 mm. Depth D: 80 mm. Dimension E1: 28 mm. Dimension F: 99 mm. Dimension M: 42.5 mm. The unit assembles into an AS3 modular block alongside filters, regulators and lubricators of the same series. Flow direction reverses if the valve is installed rotated through 180°.

Materials

Housing: polyamide. Front Plate: ABS. Seals: PTFE. Threaded Bushing: die-cast zinc. Actuating Element: POM. Locking Base: die-cast zinc.

Quantity and configuration

Unit Quantity: 1 Pc. One shut-off valve module with its rotary actuator and locking base.

Interchange guidance

Bosch Rexroth material number R412007261 and AVENTICS type code AS3-BAV-G012-MAN identify the same valve. Searchable variants of the number: R 412 007 261, R-412-007-261, R412 007 261, AS3-BAV-G012-MAN, AS3 BAV G012 MAN, AS3-BAV.

R412007269 is the AS3 filter regulator module in the same series — a different function on the same modular block, not an equivalent.