Stainless Steel PC-G Pneumatic Push-In Fitting Straight Male G Thread – Air Compressor

Description

Stainless Steel PC-G Pneumatic Push-In Fitting – Straight Male G (BSP) Thread

The PC-G series is a straight push-in-to-male-thread pneumatic fitting: one end accepts a push-in tube connection (collet + O-ring seal); the other end has a male G (BSP parallel) thread for connection to valves, cylinders, manifolds, and equipment ports. Stainless steel construction (SUS304) provides superior corrosion resistance compared to standard brass or zinc alloy fittings — essential for food processing, pharmaceutical, marine, and outdoor pneumatic systems where moisture, cleaning agents, or corrosive atmospheres are present.

Key Specifications

Series: PC-G (Push-in to Male G thread, straight)
Body Material: SUS304 stainless steel
Thread Standard: G (BSP parallel, ISO 228-1) — male external thread
Push-In End: Collet + O-ring seal, accepts nylon (PA) or polyurethane (PU) tubing
Working Pressure: 0–1.0 MPa (0–145 PSI)
Temperature Range: -20°C to +80°C
Media: Compressed air, water, light non-corrosive fluids
Available Sizes: Tubing OD × Thread size (e.g., 6mm × G1/8, 8mm × G1/4, 10mm × G3/8)

PC-G Naming Convention

PC = Push-in Connector (straight body, one push-in port)
G = Male G (BSP parallel) thread on the opposite end
Size format: PC[tube OD]-G[thread size] — e.g., PC6-G1/4 = 6mm tube, G1/4 male thread

Related series: PCF-G (female G thread), PL-G (elbow push-in to male G), PLF-G (elbow push-in to female G). The PC-G straight fitting is the most common configuration for direct port connections.

Why Stainless Steel vs Brass for Pneumatic Fittings?

Brass: Standard choice for most pneumatic applications. Lower cost, good machinability, adequate corrosion resistance in clean air and water. Susceptible to dezincification in high-chloride water and stress corrosion cracking in ammonia environments.
Stainless steel SUS304 (this product): Required for food & beverage (FDA/EC 1935/2004 compliance), pharmaceutical clean rooms, marine environments, outdoor installations exposed to salt spray, and systems using cleaning agents (CIP/SIP). Higher cost but eliminates corrosion-related maintenance.
Stainless steel SUS316: For aggressive chemical environments (chlorides, acids). Use when SUS304 is insufficient (e.g., offshore, chemical processing).

What Questions Does This Product Answer?

"What is the difference between G thread and NPT thread on pneumatic fittings?" — G thread (BSP parallel, ISO 228-1) has a 55° thread angle and parallel (non-tapered) profile. NPT has a 60° thread angle and tapered profile. They are not interchangeable. G thread seals via a bonded washer or O-ring on the thread shoulder; NPT seals via thread interference + PTFE tape.
"Do I need PTFE tape on G thread pneumatic fittings?" — No. G (BSP parallel) threads seal via the O-ring or bonded washer on the thread shoulder, not via thread interference. PTFE tape on G threads does not improve the seal and can contaminate the pneumatic system.
"Can stainless steel push-in fittings be used with food-grade compressed air?" — Yes. SUS304 stainless steel is suitable for food contact applications. Verify that the O-ring material (NBR standard, FKM/EPDM for food-grade) also meets your food safety requirements.
"What tubing is compatible with PC-G push-in fittings?" — Nylon (PA) and polyurethane (PU) tubing with consistent OD tolerance. The collet grips the tube OD — tubing must be within ±0.1mm of nominal OD for reliable sealing.

Typical Applications

Food & beverage: Pneumatic actuators on filling machines, packaging equipment, conveyor systems requiring washdown-safe fittings
Pharmaceutical: Clean room pneumatic circuits, sterile air distribution, isolator pressure control
Marine: Deck equipment pneumatics, bilge system air controls, salt-spray-exposed installations
Outdoor automation: Agricultural machinery, irrigation control valves, outdoor kiosk pneumatics
Chemical processing: Non-aggressive fluid circuits where brass dezincification is a concern