Applications:
FH & FIH Series Quick Disconnect has provided years of reliable service on hydraulic/pneumatic applications in the handling of gases and fluids. The FH & FIH Series couplings are engineered to meet or exceeds MIL-C-51234. Options are available for static pressure hydraulic systems and also for pneumatic air tool use. The FIH Series sockets & plugs are for pneumatic applications. The FIH sockets have a valve with 360 deg. contact with plug.
Interchange:
FH Series interchanges with Snap-Tite “H” Series. FIH Series interchanges with Snap-Tite “IH” Series. Within each series, only sockets and plugs of the same size will couple together.
Features:
Type: FH – Two Way Shut-Off and Straight-Thru FIH – One Way Shut-Off Operation: Manual – Socket sleeve must be manually retracted to connect and disconnect. Rated Pressure: Rated Pressure as defined by ANSI/B93.2-1986, non-shock service. Socket Features: Latch Mechanism Manual connect and disconnect Steel sleeves are hardened to provide maximum service life Material and Finish Machined from solid bar stock Steel components are zinc plated Coupled Seal Valved units incorporate a Teflon back-up ring to with-stand dynamic impulse Seals Buna-N (Nitrile) seals are standard Valve seals are crimped in place to maintain integrity during excessive flow conditions
Performance:

Diagram:

Body Size	FH Series, Two Way	FH, Straight Thru	FIH Series, One Way
	Steel PSIG	Brass PSIG	Steel PSIG	Brass PSIG	Steel PSIG
1/4″	3250	2000	3000	3000	3000
3/8″	2250	1200	4000	3500	2250
1/2″	1800	1200	4000	2500	2000

Female Coupler Part Number	Male Plug Part Number	Snap-Tite No.	FPT Thread	Description
FIS2F2	FH22F FH22FB	VIHC4-4F	1/4″	Steel
FIS3F3	FH33F FH33FB	VIHC6-6F	3/8″	Steel
BLFIS3F3	–	–	3/8″	Ball Lock, Steel
FIS4F4	FH44F FH44FB	VIHC8-8F	1/2″	Steel
BLFIS4F4	–	–	1/2″	Ball Lock, Steel

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FIS4F4 by ZSi-Foster | Quick Disconnect | FIH Series | One Way Valved Socket | 1/2 ” FPT | Steel