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HK Series 303/316 Stainless Steel Quick Couplings | High-Pressure Hydraulic & Industrial Fluid Transfer Solutions
Product Description
HK Series 303/316 Stainless Steel Quick Couplings deliver robust, corrosion-resistant performance for hydraulic, pneumatic, and industrial fluid transfer systems. Engineered for demanding industries like oil/gas, chemical processing, marine, and heavy machinery, these couplings ensure leak-free operation with precision ball-latch mechanisms and self-sealing poppet valves. Choose valved or non-valved designs with threaded or flat-face ports to suit high-pressure (up to 10,000 PSI) and high-temperature environments. The 303/316 stainless steel construction withstands harsh chemicals, extreme conditions, and frequent use, minimizing downtime during retrofits. Ideal for applications requiring instant shutoff, safety compliance, and low maintenance. Industrial-interchange compatibility ensures easy integration into existing systems. Trust HK Series for reliable, durable connections in critical operations.
Standard Materials

• Brass, zinc-plated steel, stainless steel
• Seals: NBR, Viton, EPDM

Features

1. Poppet valves available to prevent uncoupled leakage . Poppet valves open automatically when coupled within rated working pressure to keep the flow expeditely.
2. Critical parts are hardened for durability.
3. Compatible with PARKER 60 Series, FASTER HNV Series AEROQUIP FD45 Series and HANSEN HK Series.
4. 

   Body Size	PARTNO.	Thread	A	B	Across Flats
   1/8"	CB-S1S-1FG	1/8-27	1.91	0.98	0.56
   1/8"	CB-S1S-1FN	1/8-27	1.91	0.98	0.56
   1/4"	CB-S2S-1FG	1/4-19	2.26	1.17	0.75
   1/4"	CB-S2S-1FN	1/4-18	2.26	1.17	0.75
   3/8"	CB-S3S-1FG	3/8-19	2.56	1.42	0.88
   3/8"	CB-S3S-1FN	3/8-18	2.56	1.42	0.88
   1/2"	CB-S4S-1FG	1/2-14	2.96	1.86	1.13
   1/2"	CB-S4S-1FN	1/2-14	2.96	1.86	1.13
   3/4"	CB-S6S-1FG	3/4-14	3.48	2.22	1.31
   3/4"	CB-S6S-1FN	3/4-14	3.48	2.22	1.31
   1"	CB-S8S-1FG	1-11	4.13	2.61	1.75
   1"	CB-S8S-1FN	1-11	4.13	2.61	1.75

   

   Body Size	PARTNO.	Thread	C	D	E	HEX
   1/8"	CB-P1S-1FG	1/8-27	1.26	0.65	0.44	0.56
   1/8"	CB-P1S-1FG	1/8-27	1.26	0.65	0.44	0.56
   1/4"	CB-P2S-1FG	1/4-19	1.52	0.87	0.56	0.75
   1/4"	CB-P2S-1FN	1/4-18	1.52	0.87	0.56	0.75
   3/8"	CB-P3S-1FG	3/8-19	1.76	1.01	0.61	0.88
   3/8"	CB-P3S-1FN	3/8-18	1.76	1.01	0.61	0.88
   1/2"	CB-P4S-1FG	1/2-14	2.03	1.30	0.76	1.13
   1/2"	CB-P4S-1FN	1/2-14	2.03	1.30	0.76	1.13
   3/4"	CB-P6S-1FG	3/4-14	2.36	1.52	0.71	1.31
   3/4"	CB-P6S-1FN	3/4-14	2.36	1.52	0.71	1.31
   1"	CB-P8S-1FG	1-11	2.85	1.88	0.97	1.63
   1"	CB-P8S-1FN	1-11	2.85	1.88	0.97	1.63