Airtac PZB Cross Threaded Fitting PZB803D
The AirTAC Airtac PZB Cross Threaded Fitting PZB803D is a genuine threaded cross for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeThreaded cross
- SeriesPZB
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac PZB Cross Threaded Fitting PZB803D
The AirTAC PZB803D is a black one-touch threaded cross: a 3/8in PT male stud on one face and three Dia 8 push-in ports on the other three faces, turning a single screwed port into a four-way pneumatic node. Push the soft nylon or polyurethane tube home and the stainless chuck grips it under the guide; press the POM release ring and the tube slides straight back out. AirTAC makes this series without an M5 option and without a Dia 4 size, so it sits firmly in the mid-to-large bore end of the range.
This is the resin/brass one-touch profile, not the metal BP line: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa and a service temperature of -20 to +70 C. The D suffix on a PZB makes the body black rather than grey; the materials stay the same PBT body, brass stud, aluminium-alloy guide and NBR O-ring. The 3/8in thread arrives with sealant already applied, so it seals into a PT port as delivered.
Airtac PZB Cross Threaded Fitting PZB803D Technical Specifications
| Model | Airtac PZB Cross Threaded Fitting PZB803D |
|---|---|
| Type | Threaded cross |
| Series | PZB |
| Connection | Push-in one-touch |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac PZB Cross Threaded Fitting PZB803D
| PZB | Threaded cross. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac PZB Cross Threaded Fitting PZB803D Is Used
Indexing dial clamp circuit
A rotary indexing table on a cap-closing machine needs four swing clamps fed symmetrically. PZB803D off a single 3/8in port on the rotary union manifold branches to all four Dia 8 drop lines in one fitting instead of a nest of tees.
SMD cooling air cross
On an SMT reflow exit cooler, four Dia 8 air jets aim at the board from four sides. A PZB803D at the plenum feeds the jet cluster off one 3/8in PT connection, keeping the nozzle pitch identical on all four branches.
Bottle rinse blast manifold
A bottling line rinse station blasts four Dia 8 nozzles into bottle necks as the carousel indexes. The cross keeps the four branches at equal distance from the supply point, so no single nozzle starves at 0.5 MPa blowing pressure.
Is the Airtac PZB Cross Threaded Fitting PZB803D the Right Part?
On the PZB 3/8in ladder this Dia 8 sits with Dia 6 below it (PZB603) and Dia 10 and Dia 12 above it (PZB1003, PZB1203). Stepping down to Dia 6 trims the bore for shorter runs and lighter actuators; stepping up to Dia 10 or Dia 12 suits longer line lengths where you want to keep velocity and pressure drop in check. If your port is 1/4in or 1/2in rather than 3/8in, Dia 8 exists on both of those ladders too (PZB802, PZB804), so you can keep the bore and change only the stud.
Match the thread to the port first, the tube second: the stud is 3/8in PT and seals on its pre-applied sealant, not on a separate gasket. And check the tube itself - a Dia 8 one-touch port holds only 8 mm outside diameter soft nylon or polyurethane tube. It will not grip 5/16in or 1/4in imperial hose, and forcing a near-size in is the usual cause of a leak on an otherwise sound fitting. Where you only need a three-way split, a PYB branch Y or PED run tee is the leaner choice; keep the PZB for genuine four-way points.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
Airtac PZB Cross Threaded Fitting PZB803D FAQ
It is a one-touch threaded cross joining Dia 8 mm tube to a 3/8in PT male stud, with three Dia 8 push-in branch ports. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it works down to -750 mmHg (10 Torr) vacuum, proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. Use soft nylon or polyurethane tube of exactly 8 mm outside diameter.
No. On the PZB series the D suffix changes the body from grey to black; the PBT body, brass stud, POM release ring, stainless chuck spring and NBR O-ring, and every pressure and temperature rating, are identical. One practical point either way: the 3/8in stud ships with sealant pre-applied, so do not strip it off before installation or add unapproved tape over it.
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