Problems You May Have Already Faced
- Leak at the tube-to-valve or tube-to-cylinder connection — a poor-quality fitting cannot hold pressure, and the system bleeds air at the worst possible point.
- Tube pulls out of the fitting under pressure — the collet of a cheap alternative does not grip the tube reliably: at 8–10 bar the joint “blows out”.
- Wrong thread ordered — G1/4″ (BSP, parallel) instead of R1/4″ (tapered 55°) or vice versa — the fitting won’t tighten or leaks.
- Wrong diameter purchased — took PC 08-02 (8 mm) instead of PC 10-02 (10 mm) and the tube rattles in the collet.
- Required part number out of stock — a single small fitting delays the entire pneumatic line installation due to late delivery.
One wrong fitting stops the entire pneumatic line installation. Correct selection based on three parameters — tube OD, thread type, and thread size — solves the problem once and for all.
Part Number Breakdown: PC 10-02
- PC — fitting type: straight (Push-in Connector), tube on one side, thread on the other;
- 10 — outer diameter of the pneumatic tube in mm (fits ⌀10 mm tube);
- 02 — thread code: R1/4″ (tapered pipe thread 55°, GOST 6211-81 / ISO 7-1, 19 threads/inch, pitch 1.337 mm).
The integrated PTFE seal on the threaded section provides a leak-free connection without additional thread tape — the fitting is ready to install straight from the packaging. Suitable for use in vacuum systems (down to −100 kPa).
Technical Specifications
| Parameter | Value |
|---|---|
| Part number | PC 10-02 (SHPI) |
| Type | Straight push-in (One-Touch), tube–thread |
| Tube OD | 10 mm |
| Thread | R1/4″ male (tapered 55°, GOST 6211-81 / ISO 7-1) |
| Thread pitch | 19 threads/inch (1.337 mm) |
| Working pressure | 10 bar (1.0 MPa) |
| Maximum pressure | 12 bar (1.2 MPa) |
| Working temperature | −20 °C … +60 °C |
| Working medium | Air, vacuum |
| Body material | Engineering polymer (black) |
| Collet / internal parts | Nickel-plated brass, stainless steel |
| Thread seal | Integrated PTFE |
| Compatible tubing | PU (polyurethane), PA (nylon) |
| Vacuum | Yes (down to −100 kPa) |
| Manufacturer | SHPI (Taiwan), ISO 9001, RoHS |
| Weight | ≈ 14 g |
Dimensional Data PC 10-02
| Parameter | Value |
|---|---|
| ØD (tube diameter) | 10 mm |
| T (PT thread) | 1/4″ |
| L (overall length) | 31.5 mm |
| A (tube insertion depth) | 10 mm |
| H1 (wrench flat) | 17 mm |
| H2 (internal hex) | 6 mm |
💡 Expert tip: R1/4″ (tapered) and G1/4″ (parallel BSP) are different standards. R1/4″ seals on the thread taper and requires no PTFE tape; G1/4″ seals on a face gasket or tape. Before ordering, check the thread type in your valve or cylinder: a tapered thread narrows toward the end, a parallel thread has the same diameter throughout.
Cross-Reference by Brand
| Brand | Part number | Tube | Thread | Pressure | Note |
|---|---|---|---|---|---|
| SHPI (original) | PC 10-02 | 10 mm | R1/4″ male | 10 bar | ISO 9001, RoHS |
| XCPC | PC 10-02 | 10 mm | R1/4″ male | 10 bar | Economy alternative |
| SMC | KQ2H10-02S | 10 mm | R1/4″ male | 10 bar | Japanese quality, higher price |
| Festo | QSS-1/4-10 | 10 mm | R1/4″ male | 10 bar | German quality, higher price |
| Metal Work | PC/10-R1/4 | 10 mm | R1/4″ male | 10 bar | Italian manufacturer |
| AirTAC | PC10-G02 | 10 mm | G1/4″ male | 10 bar | ⚠️ G thread (parallel) — do not confuse with R |
⚠️ Important when selecting alternatives: fittings with code “02” have R1/4″ tapered thread; code “G02” means G1/4″ parallel thread. These are different standards — mixing them causes leaks or cross-threading. Always verify the thread type in your system before ordering.
5 Essential Compatibility Parameters
- Tube outer diameter — for PC 10-02 this is exactly 10 mm OD; 10×6.5 mm (OD×ID) tubing fits, 8×5 mm does not (use PC 08-02).
- Thread type (R or G) — R1/4″ tapered vs G1/4″ parallel; check the thread profile in the mating port: a taper narrows, a parallel thread does not.
- Thread direction (male or female) — PC 10-02 has male (external) thread (screws into the female port of a valve or cylinder).
- System working pressure — PC 10-02 is rated for 10 bar; for pressures above 12 bar use all-metal fittings (stainless PC series).
- Tubing material — compatible with PU and PA tubing; silicone and PVC tubing are not suitable because the tube wall is too soft for the collet to grip.
Applications
Industrial Automation
- Connecting pneumatic cylinders, directional control valves, pressure regulators
- Installing pneumatic lines on assembly and conveyor lines
- Joining 10 mm tubing in robotic cell systems
Automotive Service and Tyre Fitting
- Connecting pneumatic tools to the distribution main
- Repairing and replacing fittings in existing pneumatic lines
- Building new pneumatic distribution networks in workshop bays
Woodworking and Furniture Manufacturing
- Connecting pneumatic cylinders of presses and clamps to the main line
- Installing air supply lines to staplers and drilling drives
Laboratory and Medical Equipment
- Vacuum systems (down to −100 kPa) — fitting is vacuum-compatible
- Low-pressure lines for analytical instruments
Expert Opinion
“The most common mistake when ordering fittings is confusing R1/4″ with G1/4″. They look similar and both are marked ‘1/4’, but the thread profile is different: R (tapered) seals on the thread itself, G (parallel) seals on a gasket. If you screw an R fitting into a G port, it will tighten but it will leak; the reverse combination won’t tighten fully. Always check before ordering: look at the mating port — the thread taper is visible to the naked eye. Standard directional control valves in the 4V, 3V series and solenoid valves — almost always G1/4″; connections to ISO pipe fittings — R1/4″.”
Vitali Bolucevschi, Chief Engineer at Acvatron SRL, 15 years in the industry
Applicable standards:
- GOST 6211-81 — tapered pipe thread (R1/4″)
- ISO 7-1 — tapered pipe thread (Rc/R)
- ISO 228-1 — parallel pipe thread G (for reference when distinguishing)
- ISO 9001, RoHS — SHPI manufacturer certifications
How to Select the Right Push-In Fitting: 5-Step Guide
- Measure the tube outer diameter — with callipers on the outside: 10 mm → PC 10-XX; 8 mm → PC 08-XX; 6 mm → PC 06-XX; 12 mm → PC 12-XX.
- Identify the thread type in the mating port — tapered (narrows, thread sealing) = R; parallel (uniform, face/gasket sealing) = G.
- Identify the thread size — measure the thread OD: ≈9.7 mm = 1/8″; ≈13.2 mm = 1/4″; ≈16.7 mm = 3/8″; ≈21 mm = 1/2″.
- Choose the fitting series — PC (straight, tube-thread); PL (elbow 90°); PT (tee); PB (branch tee tube-thread-tube); PE (reducer).
- Check pressure and temperature — SHPI PC is suitable for standard pneumatic systems (up to 10 bar, up to 60 °C); for aggressive media or high temperatures choose the all-metal series.
FAQ
❓ What is the difference between SHPI PC 10-02 and PC 10-G02? PC 10-02 has R1/4″ tapered thread (55°, GOST 6211-81 / ISO 7-1) — thread sealing, no PTFE tape needed. PC 10-G02 has G1/4″ parallel thread (BSP, ISO 228-1) — requires a face gasket or PTFE tape. Both fittings are for 10 mm tubing but install into different thread types and are not interchangeable.
❓ Can SHPI PC 10-02 be used in vacuum systems? Yes. The fitting is rated for vacuum service down to −100 kPa. The integrated PTFE seal on the threaded section provides a leak-free connection both under positive pressure (up to 10 bar) and under vacuum. This makes PC 10-02 particularly convenient for systems that alternate between pressure and vacuum without changing fittings.
❓ Is PTFE tape required when installing PC 10-02? No. The fitting has an integrated PTFE seal on the threaded section — it is ready to install without additional tape. This is the advantage of the R1/4″ tapered thread: as it is tightened, the taper self-seals. Additional PTFE tape is permissible but unnecessary.
❓ My part number looks different — PC 10-02 or PC10-02? It is the same fitting with different spelling variants used by different distributors: PC 10-02 = PC10-02 = PC-10-02. All three designations refer to the SHPI straight push-in fitting, 10 mm tube, R1/4″ male thread. Acvatron SRL accepts any of these variants.
Why Acvatron SRL — 5 Strong Reasons
Genuine SHPI fittings with certificates Acvatron SRL supplies SHPI fittings with ISO 9001 and RoHS documentation — not anonymous unbranded goods. For manufacturing companies this matters during technical audits and ISO compliance checks.
Engineering selection based on your pneumatic line diagram Not sure about the thread type or tube diameter — send a photo or diagram, and an Acvatron SRL engineer will identify the correct part numbers on the same day. We cover the full SHPI range: PC, PL, PB, PT, PE, PU, PW and other series.
In stock in Chișinău SHPI PC series fittings (06, 08, 10, 12 mm) in 1/8″, 1/4″, 3/8″, 1/2″ threads are permanently stocked at acvatron.md. Same-day collection after payment.
Complete range of pneumatic fittings and tubing Acvatron SRL supplies not only fittings but also compatible SHPI PU and PA tubing, reinforced hoses, and reels. Everything for your complete pneumatic line — in one place in Chișinău.
Documents for legal entities All items are supplied with full accompanying documentation. For companies — VAT invoice and contract.


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