GRACO 556648 – Brass Union Fitting, 5/16 Tube

GRACO 556648 – Brass Union Fitting, 5/16 Tube

Brass union fitting designed for 5/16 tube connections in heavy-duty lubrication systems. Provides secure, leak-proof connections for tube-to-tube joints in high-pressure applications up to 1500+ psi.

Specifications

Thread: 5/16 tube

Material: Brass

Tube Size: 5/16 in.

Features

Brass construction for durability and corrosion resistance

Precision-machined for reliable tube connections

Designed for high-pressure lubrication systems

Easy installation and maintenance

Applications

Lubrication system tube connections

High-pressure fluid transfer lines

Industrial pumping systems

Maintenance and repair of existing tube networks

Compatible Equipment

L12100 series lubrication systems

5/16 tube lubrication lines

Related Parts

556636 – Male Branch Tee, 5/16 tube, 1/8 NPTF Brass

556637 – Union Tee, 5/16 tube, Brass

556647 – Union, 3/16 tube, Brass

556643 – Female Connector, 5/16 tube x 1/8 NPTF

556645 – Male Connector, 5/16 tube x 1/8 NPTF

556646 – Male Connector, 5/16 tube x 1/4 NPTF

556647 – High-Quality Brass Union Fitting, 3/16 Tube

Part of the L12100 accessories/hardware line for heavy-wall lube line systems Part of tube union family with 3/16 in. and 5/16 in. tube sizes available

Reference Manuals

L12100EN – C (Page 26)

312054 (Page 26) Grease Jockey Chassis Lubrication System