WP Series Low Cost In-Line Flowmeters

These inline flowmeters for the cost-conscious buyer are available in aluminum, stainless steel or brass. The type of metal chosen is dependent on the type of hydraulic fluid used. Models are available with SAE, NPT or BSP ports. These flowmeters can be conveniently mounted in any position including vertical, horizontal or inverted, and allow readings bi-directionally or in free reverse flow, providing accurate measurements on a wide range of fluid viscosity. Models are available with flow switches (single or dual), models with transmitters, models suited to high temperatures, and models designed for phosphate esters. Excellent coupling is accomplished through the use of a powerful ALNICO magnet (Al = aluminum, NI = nickel, CO = cobalt).

Product Description

  • Direct reading, dual calibrated scale, gpm/lpm, special scales available.
  • Available with the following line sizes: 1/2”, 3/4”, 1”, 1-1/2”, 2”
  • Flow rates – Liquids: 0.05 to 150 gpm . Gases: 1.5 – 1350 SCFM
  • Maximum pressure rating – Liquids: 3500 & 6000 psi. Gases: 1000 psi.
  • Accurate within 2.5% over midscale, 4% FSD

​Model Numbers:

  • B3A4AS
  • B4A4AS
  • B5A4AS
  • B3B4AS
  • B4B4AS
  • B5B4AS
  • B3S4AS
  • B4S4AS
  • B5S4AS
  • B3A5AS
  • B4A5AS
  • B5A5AS
  • B3B5AS
  • B4B5AS
  • B5B5AS
  • B3S5AS
  • B4S5AS
  • B5S5AS
  • B3A6AS
  • B4A6AS
  • B5A6AS
  • B3B6AS
  • B4B6AS
  • B5B6AS
  • B3S6AS
  • B4S6AS
  • B5S6AS
  • B3A7AS
  • B4A7AS
  • B5A7AS
  • B3B7AS
  • B4B7AS
  • B5B7AS
  • B3S7AS
  • B4S7AS
  • B5S7AS
  • Threads for size 3:
    • 1/4” NPTF
    • 3/8” NPTF
    • 1/2” NPTF
    • 9/16” -18UN #6 SAE ORB
    • 3/4” -16UN #8 SAE ORB
    • 7/8” -14UN #10 SAE ORB
    • 3/8” BSPP
    • 1/2” BSPP

    Threads for size 4:

    • 3/4” NPTF = C
    • 1” NPTF = D
    • 1-1/16” -12UN #12 SAE ORB = H
    • 1-5/16” -12UN #16 SAE ORB = J
    • 3/4” BSPP = U
    • 1” BSPP = V

    Threads for size 5:

    • 1-1/4” NPTF = K
    • 1-1/2” NPTF = L
    • 2” NPTF = M
    • 1-5/8” -12UN #20 SAE ORB = N
    • 1-7/8” -12UN #24 SAE ORB = P
    • 2” -12UN #32 SAE ORB = Q
    • 1-1/4” BSPP = W
    • 1-1/2” BSPP = Y
    • 2” BSPP = X

Quick Quote Title Image

Whether you're sourcing replacement parts, planning a system upgrade, or building new equipment, our certified fluid power specialists are ready to help.