Push-In Fitting SHPI PC 08-02 — Straight, Tube 8 mm × R1/4″ Male Thread, Plastic+Brass

A Problem You’ve Already Faced

• Leak at the tube-to-valve or tube-to-cylinder connection — a poor fitting won’t hold pressure; the system bleeds air at the worst possible point.
• The tube pulls out under pressure — the collet of a cheap copy doesn’t grip the tube firmly: at 8–10 bar the joint “pops”.
• Wrong thread ordered — G1/4″ (BSP, parallel) ordered instead of R1/4″ (taper, 55°) — the fitting won’t screw in fully or leaks.
• Wrong diameter ordered — PC 06-02 (6 mm) bought instead of PC 08-02 (8 mm) — the tube is loose in the collet.
• Part not available locally — a small fitting delays the installation of an entire pneumatic line due to a late delivery.

One wrong fitting stops the entire pneumatic line installation. Correct selection by three parameters — tube diameter, thread type and thread size — solves the problem once and for all.

What Is the SHPI PC 08-02 Fitting

The SHPI PC 08-02 is a straight push-in fitting from the PC series by Taiwanese manufacturer SHPI (Shan Hua Plastic Industrial Co., 40+ years in the industry, ISO 9001, RoHS). Connection principle: push-in (One-Touch) — the tube is inserted into the fitting until it clicks, without tools, and is held by a stainless steel collet with a toothed grip. To disconnect, press the release sleeve and pull the tube.

Part number breakdown — PC 08-02:

• PC — fitting type: straight Push-in Connector, tube on one side, thread on the other;
• 08 — pneumatic tube outside diameter in mm (fits ⌀8 mm tube);
• 02 — thread code: R1/4″ (taper pipe thread 55°, ISO 7-1, 19 TPI, pitch 1.337 mm).

The built-in PTFE seal on the threaded section provides an airtight joint without additional PTFE tape — the fitting is installation-ready straight from the packaging. Rated for vacuum service (down to −100 kPa).

Technical Specifications

💡 Expert tip: R1/4″ (taper) and G1/4″ (parallel BSP) are different thread standards. R1/4″ seals on the thread taper and needs no PTFE tape; G1/4″ seals on a face gasket or tape. Before ordering, verify the thread type in your valve or cylinder: taper thread narrows toward the end; parallel thread is the same diameter throughout.

Brand Equivalents

Why Acvatron SRL — 5 Solid Reasons

Original SHPI Fittings with Certificates

Acvatron SRL supplies SHPI fittings with ISO 9001 and RoHS documents — not unbranded product without marking. For manufacturing enterprises this matters during technical audits and ISO compliance checks.

Engineering Selection by Pneumatic Line Diagram

Not sure of the thread type or tube diameter — send a photo or drawing and the Acvatron SRL engineer selects the right part numbers on the same day. We cover the full SHPI range: PC, PL, PB, PT, PE, PU, PW and other series.

In Stock at the Chișinău Warehouse

SHPI PC series fittings (06, 08, 10, 12 mm) in 1/8″, 1/4″, 3/8″, 1/2″ threads are permanently in stock at acvatron.md. Collect on the day of payment.

Full Range of Pneumatic Fittings and Tubes

Acvatron SRL supplies not only fittings but also compatible SHPI PU and PA tubes, reinforced hoses and reels. Complete pneumatic line supply — in one place in Chișinău.

Documents for Legal Entities

All items are supplied with accompanying documents. For legal entities — invoice and contract.

Applications

Industrial Automation

• Connecting pneumatic cylinders, directional valves, pressure regulators
• Installing pneumatic lines on assembly and conveyor lines
• Connecting 8 mm tubes in robotic cell systems

Auto Service and Tyre Fitting

• Connecting pneumatic tools to the distribution main
• Repairing and replacing fittings in existing pneumatic lines

Woodworking and Furniture Manufacturing

• Connecting pneumatic cylinders of presses and clamps to the line
• Installing air supply lines to staplers and drill drives

Laboratory and Medical Equipment

• Vacuum systems (down to −100 kPa) — the fitting is vacuum-rated
• Low-pressure lines for analytical instruments

Expert Opinion

“The most common mistake when ordering fittings is the confusion between R1/4″ and G1/4″. They look similar, both marked ‘1/4’, but the thread profile is different: R (taper) seals on the thread itself; G (parallel) seals on a face gasket. If you screw an R fitting into a G port it will go in but will leak; the reverse combination won’t tighten fully. Always verify before ordering: look at the mating port — the taper on the thread is visible to the naked eye. For standard pneumatic valves 4V, 3V, solenoid valves — almost always G1/4″; for connections with ISO pipe fittings — R1/4″.”

Vitali Bolucevschi, Chief Engineer at Acvatron SRL, 15 years in the industry

How to Choose the Right Push-In Fitting: 5-Step Algorithm

1. Measure the tube outside diameter — with a calliper: 8 mm → PC 08-XX; 6 mm → PC 06-XX; 10 mm → PC 10-XX.
2. Identify the thread type in the mating port — taper (narrows toward the end) = R; parallel (same diameter throughout) = G.
3. Identify the thread size — thread OD ≈13.2 mm = 1/4″.
4. Choose the fitting series — PC (straight); PL (elbow 90°); PT (tee); PB (tee tube-thread-tube).
5. Check pressure and temperature — up to 10 bar and 60 °C — SHPI PC is suitable.

FAQ

❓ What is the difference between SHPI PC 08-02 and PC 08-G02?

Part number PC 08-02 has an R1/4″ taper thread (55°) — seals on the thread taper, no PTFE tape required. Part number PC 08-G02 has a G1/4″ parallel thread (BSP) — requires a face gasket or tape seal. Both are for 8 mm tube but are not interchangeable.

❓ Can the SHPI PC 08-02 be used in vacuum systems?

Yes. The fitting is rated for vacuum down to −100 kPa. The built-in PTFE seal provides an airtight joint under both positive pressure (up to 10 bar) and vacuum. This makes the PC 08-02 particularly convenient for systems alternating between pressure and vacuum modes without changing fittings.

❓ Is PTFE tape needed when installing the PC 08-02?

No. The fitting has a built-in PTFE seal on the threaded section and is ready for installation without additional tape. The taper R1/4″ thread self-seals as it is tightened.

Take the Next Step Right Now

The right fitting means a reliable leak-free pneumatic line with no unplanned stoppages. One wrong part number delays the entire installation.

1. 📞 Call us — the Acvatron SRL engineer confirms PC 08-02 is in stock and helps select the remaining parts for your system diagram.
2. 📋 Request a commercial quote — with part numbers, prices and documents for the complete fitting and tube package. For legal entities — invoice and contract.
3. 🛒 Place your order by phone or at our office — collect from the Chișinău warehouse on the day of payment.

Acvatron SRL — an engineering approach to every sale.