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Foster Products



ZSi Products




Iso





FHK Series,FHK Series 1/8" to 1" - Two Way Shut-off
(Conforms with ISO 7241-1, Series B)
FHK Series,Two Way Shut-off Plugs
Sizes and Pricing

Steel/Brass/Stainless
1/8" Plugs
Sizes and Pricing

Steel/Brass/Stainless
1/4" Plugs
Sizes and Pricing

Steel/Brass/Stainless
3/8" Plugs
Sizes and Pricing

Steel/Brass/Stainless
1/2" Plugs
Sizes and Pricing

Steel/Brass/Stainless
3/4" Plugs
Sizes and Pricing

Steel/Brass/Stainless
1" Plugs
FHK Series, 2-Way Shut-off Sockets
Sizes and Pricing

Brass/Steel/Stainless
1/8" Sockets
Sizes and Pricing

Brass/Steel/Stainless
1/4" Sockets
Sizes and Pricing

Brass/Steel/Stainless
3/8" Sockets
Sizes and Pricing

Brass/Steel/Stainless
1/2" Sockets
Sizes and Pricing

Brass/Steel/Stainless
3/4" Sockets
Sizes and Pricing

Brass/Steel/Stainless
1" Sockets
FHK Series, Dust Caps and Plugs
Sizes and Pricing

Aluminum-Dust Plug NPT Thread
Sizes and Pricing

Aluminum-Dust Plug SAE Thread
Sizes and Pricing

Rubber - Dust Caps and Plugs
 

Two Way Shut-Off, Sockets
Performance Data - flow in USGPM
  Rated Pressure Air Flow
CFM
100 PSIG
Air Flow
CFM
80 PSIG
Oil Flow
GPM
MIL-H5606
125°F
  Coupled PSI
(Non Shock Service)
Pressure Drop
Body Size Steel Brass Stainless 10
PSIG
5
PSIG
10
PSIG
5
PSIG
10
PSIG
1/8" 4000 3000 5000 22 17 20 15 1.8
1/4" 5000 2700 3700 32 22 29 20 3.6
3/8" 3700 2200 3700 58 42 53 38 6.7
1/2" 5000 2250 4250 130 88 118 80 11.0
3/4" 4000 2000 3500 305 207 277 188 26.3
1" 4000 1500 3000 372 252 338 229 31.8

Rated Pressure, Coupled
  Brass Steel Stainless Steel
  Size PSI BAR PSI BAR PSI BAR
H3 3/8" 2,200 152 3,700 255 3,700 255
H4 1/2" 2,250 155 5,000 345 4,250 293
H6 3/4" 2,000 138 4,000 275 3,500 242
H8 1" 1,500 103 4,000 275 2,500 173

Performance:

FHK-chart1
FHK-chart2

Applications: FHK Series sockets incorporate valves in both socket and plug halves to prevent fluid loss when the socket is disconnected. These sockets are normally referred to as "hydraulic couplings", but they are used extensively with other media where objectionable. The FHK Series sockets are available in ROHS compliant steel and brass.

Vacuum Service: 27" Hg. maximum Rated pressures as
defined by ANSI/B93.2-1986 based on 4:1 Safety Factor and
non-shock service.

Type: FHK, Two-Way Shutoff , Both socket and plug are sealed at disconnect.

Interchangeability: Standard, most widely used, industrial interchange design. Within each series, only sockets and plugs of the same size will couple to gether. Compatible with ISO 7241-1, Series B.

Operation: Manual - Socket sleeve must be manually retracted to connect and disconnect.

Seal Compound: Standard seals are Buna-N.

Options:

  • One Way Shut-Off: Add suffix VA to either socket or plug
    catalog number for valve actuator.

  • Straight-Thru: Add suffix LV to both socket and plug catalog number for less valve.

  • BL: Locks against accidental disconnect. To connect, align ball with slot. After connection, rotate sleeve to lock. To disconnect, realign ball with slot and retract sleeve. To order, add prefix BL to socket catalog number.

    Ordering information: FHK Series couplings are available in ROHS compliant plated steel, brass, and 303 Stainless as standard. Brass couplings have double O-Ring seals (excluding 1/8>") and stainless locking balls.

    Features:

    • ISO B, Hardened plugs and sleeves constructed from solid bar stock ensures long service life and maximum resistance to damage from hydraulic and mechanical shock.

    • High flow capacity.

    • Foster's conical valve with its 360° metal to metal valve stop maintains valve alignment and insures that poppets open fully
      every time.

    • Captive valve seal ensures "bubble tight" poppet sealing since seal is positively captured by the metal poppet to minimize seal washout or damage from high fluid velocity.

    • Ball locking mechanism ensures reliable connections every time. Many ball bearings distribute the load while providing alignment and excellent swiveling action to reduce hose torque and prolong hose life.

    • Broad range of metals and seal materials allow the use of most fluids.

    • Industrial Interchange

    Dust Plugs and Dust Caps

    • Protective dust plugs and caps play a crucial role in the use of quick couplings and no purchase of a hydraulic quick coupling is complete without the selection of an appropriate dust plug and cap. Dust plugs and caps serve a two-fold function. They keep the mating surface clean and free of contamination and protect the critical mating elements of the coupling halves when they are disconnected. In this way the plug is protected from damage that would make the total coupling unusable.

    • When ordering the dust cap/plug body size must correspond to that of the socket or plug.