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Parker HO Series

For the complete product listing, please view Catalog 3800 - Quick Coupling Products (19.9 MB PDF).

HO Series Couplers

Manual Sleeve, Sleeve Lock

Parker HO Series Couplers

HO series couplings are high flow, high pressure, steel couplings for a wide variety of applications. Electroless nickel plating provides corrosion resistance.

Applications: Paper and pulp processing, refinery systems, testing systems

Features:

  • Steel material with electroless nickel plating
  • Nitrile seals with PTFE back up ring
  • No valving, unrestricted flow
  • Standard sleeve lock guards against accidental disconnection
  • Rated pressures up to 15,000 psi

HO Series Specifications

Body Size Rated Pressure Rated Flow Temperature Range
inches (psi) (gpm) (std seals)
1/4 15,000 3 -40° to +250° F
3/8 15,000 6 -40° to +250° F
1/2 10,000 12 -40° to +250° F

Couplers

Couplers
Body Size Part # Thread Size Overall Length Largest Diameter Wrench Flats Weight Rubber Dust Plug
inches (lbs.)
1/4 HO-251-4FP 1/4-18 NPTF 1.67 1.06 0.94 0.24 TR-37
3/8 HO-371-6FP 3/8-18 NPTF 1.67 1.06 0.94 0.22 TR-37
1/2 HO-501-8FP 1/2-14 NPTF 2.03 1.62 1.25 0.52 DP-50

Nipples

Nipples
Body Size Part # Thread Size Overall Length Exposed Length Largest Diameter Wrench Flats Weight Rubber Dust Plug
inches (lbs.)
1/4 HO-252-4FP 1/4-18 NPTF 1.40 0.66 0.94 0.81 0.10 TR-37
3/8 HO-372-6FP 3/8-18 NPTF 1.44 0.70 1.08 0.94 0.12 TR-37
1/2 HO-502-8FP 1/2-14 NPTF 2.03 0.86 1.30 1.12 0.26 DP-50