Foster ST2F2-S Steel Quick Connect Socket – 1/4" FNPT, FST Series Industrial Interchange

Model: ST2F2-S
Category: Pressure Washer Accessories → Quick Connect Fittings
Type: Foster ST2F2-S Steel Quick Connect Socket – 1/4" FNPT, FST Series Industrial Interchange

The Foster ST2F2-S Steel Quick Connect Socket is a heavy-duty straight-through coupling designed for industrial fluid transfer and pressure washing applications. Built to the widely used FST (Straight-Thru) industrial interchange standard, this socket ensures compatibility with other fittings of the same series and size for reliable system integration.

Key Features

• Foster ST2F2-S steel quick connect socket

• 1/4" FNPT threaded connection

• FST Series straight-through design (no internal valve)

• Industrial interchange compatibility (same series/size required)

• Durable steel construction for demanding environments

• Manual sleeve operation for connect/disconnect

• Optional ball lock mechanism to prevent accidental disconnect

• Buna-N seals for reliable sealing performance

• Designed for maximum flow with minimal pressure drop

Technical Specifications

Product Name: Steel Quick Connect Socket
Brand: Breco (ZSi-Foster)
Model / Part Number: ST2F2-S
Series: ST / FST (Straight-Thru Industrial Interchange)

Connection Size: 1/4" FNPT
Material: Steel
Seal Material: Buna-N
Operation Type: Manual Sleeve
Locking Mechanism: Ball Lock (Optional)
Flow Design: Straight-Through (No Valve)
Vacuum Rating: Up to 27" Hg

Pressure Rating: Per ANSI/B93.2-1986 (4:1 safety factor, non-shock service)
Interchange Type: Industrial Interchange (same size/series required)
Condition: New

Typical Applications

• Pressure washer hose and accessory connections

• Industrial fluid transfer systems

• Pneumatic and hydraulic line connections

• Steam cleaning and washdown systems

• High-flow applications requiring minimal pressure drop

• Applications requiring a 1/4" FNPT industrial interchange quick connect socket

⚠ Compatibility Note:
Only sockets and plugs within the same series and size will connect (e.g., matching prefix digits such as 25FS with 25MPB). Ensure proper pairing for safe and effective operation.