Parker S71-3N16-20F Hydraulic Hose Valve Fitting 1-1/4 in

Product Description

The PARKER S71-3N16-20F is a stainless steel hydraulic hose valve fitting rated for 4,000 psi service. Designed for high-pressure hydraulic plumbing, this valve fitting connects hose assemblies to system components and provides a reliable sealing interface where shutoff or directional control is required at the hose end. The 1-1/4 inch thread size suits mid-to-large bore hydraulic circuits. An operating temperature range of -35 degrees F to 250 degrees F makes this fitting serviceable across cold-start and elevated-temperature hydraulic applications. Hydraulic technicians and fluid power specialists are the primary installers.

This fitting is used in industrial hydraulic systems, mobile equipment, and heavy machinery where stainless steel construction is required for corrosion resistance or compatibility with aggressive media. The 1-1/4 inch thread size is common in higher-flow circuits found in construction equipment, agricultural machinery, and stationary hydraulic power units. It is sold individually, making it suitable for single-point repairs or custom hose assembly builds.

Key Features

• 4,000 psi pressure rating for high-pressure hydraulic service
• Stainless steel construction provides corrosion resistance in demanding environments
• 1-1/4 inch thread size fits mid-to-large bore hydraulic hose assemblies
• Operating range of -35 degrees F to 250 degrees F covers wide thermal conditions
• Valve fitting style allows integration with shutoff or flow-control points in the hose line
• Single-piece packaging supports field repair and individual assembly builds

Compatibility

Designed as an OEM-style hydraulic hose valve fitting for high-pressure hydraulic systems requiring a 1-1/4 inch stainless steel fitting rated to 4,000 psi.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power specialist. Depressurize and bleed the hydraulic circuit completely before removing or installing any hose or fitting. Verify thread type and engagement before torquing to avoid cross-threading or sealing failure. Follow applicable industry standards such as SAE J1453 or relevant equipment OEM service procedures when assembling hydraulic connections.