2. M3B/M3R/M3L series utilize external mechanism-provided actuation force, suitable for position sensing or limit switch applications;
3. M3C/M3D/M3Y/M3PF/M3PM/M3PP/M3PL/M3HS series feature manual operation with multiple structural configurations of control heads for diverse operational conditions;
4. Spool-type design with pressure-independent actuation force (zero backpressure effect), internal sealing ring ensures reliable sealing and responsive directional switching;
5. Lubrication-free operation;
6. Multi-position mounting options for simplified installation;
7. Metal construction of control heads in M3C/M3D/M3Y/M3R/M3I series ensures extended service life and enhanced operational stability.
Category: Mechanical Valves | Brand: AirTAC | Series: M3PP
AirTAC M3PP21008R Mushroom Head Push Button Mechanical Valve Specifications
- Model: M3PP21008R
- Type: Normally closed mechanical valve (manual reset)
- Port size: M5 threaded (ISO 228-1 standard)
- Operating pressure: 0.05–0.7 MPa
- Voltage options: Not Applicable (Manual Actuation)
- Actuation force: 45-55N (emergency stop compliant)
- Contact rating: 5A @ 250VAC (gold-plated contacts)
- Mechanical life: ≥500,000 cycles
- Weight: 85g ±2g
- Dimensions: 25mm(L) × 25mm(W) × 43.5mm(H)
- Seal material: High-wear resistant PU
- Temperature range: -5℃ to 60℃
- Protection rating: IP65 (dust-tight & water jet resistant)
- Mounting: Panel cutout Ø22mm (DIN 43620 compliant)
Emergency stop safety valve with positive-lock mechanism featuring a 360° rotatable red mushroom head. The yellow base contains dual NO/NC contacts with arc suppression, designed for machine safety circuits. Includes integrated mounting clip for tool-free panel installation.
- Emergency stop stations in CNC machinery
- Safety interlocks for conveyor systems
- Manual override in automated production lines
- Test bench emergency cutoff systems
- Educational robotics safety controls

Property | Property Value |
---|---|
sku | M3PP21008R |
Position | 3-Port 2-Position |
Port Size | PT1/4 |
Returns will be accepted for up to 15 days of Customer’s receipt or tracking number on Not used items. You, as a Customer, are obliged to inform us via email before you return the item, only in the case of:
- Received the wrong item.
- Item arrived not as expected (ie. damaged packaging).
- Item had defects.
- Over delivery time.
- The shipper does not allow the goods to be inspected before payment.
The returned product(s) must be in the original packaging, safety wrapped, undamaged and unworn. This means that the item(s) must be safely packed in a carton box for protection during transport, possibly the same carton used to ship to you as a customer.