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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.

   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

‌Shanghai Phidix Trading Co., Ltd – Makers of Carterberg Quick Couplings.Reliable Hydraulic & Pneumatic Solutions Since 2004

Core Competencies‌

 •  IATF 16949 Certified

    Excellence‌ Specialized in precision hydraulic & pneumatic quick couplings with automotive-grade quality control.

 •  Carterberg Brand

    Leader Direct replacement for Parker, FASTER, AEROQUIP & Hansen couplings with 30% cost efficiency.

 •  Flexible OEM/ODM Services

    Custom-engineered hydraulic/pneumatic couplings for unique industrial requirements.

‌Carterberg Product Portfolio

•  Hydraulic Quick Couplings‌

   High-pressure connectors for construction machinery, marine equipment, and industrial hydraulics.

•  Pneumatic Quick Couplings‌

   Ergonomic designs for compressed air systems in automation, manufacturing, and robotics.

•  Multi-Industry Solutions‌

   Adaptable fluid connectors for: Firefighting systems | Military vehicles | Medical devices | Aviation maintenance | Chemical transfer | Power plants

‌Technical Edge

• ‌Material Precision‌
  CNC-machined brass/stainless steel with anti-corrosion surface treatment.

• ‌Rigorous Testing‌
  100% pressure cycle testing (up to 50 MPa) and temperature resistance (-30°C to 100°C).

• ‌Global Compliance‌
  IATF 16949 certified production system for automotive applications.

Why Choose Us?‌
•   ‌20+ Years‌ in fluid connection engineering
•   ‌One-Stop Customization‌: Prototyping to mass production
•   ‌Rapid Sampling‌ for urgent project support

‌Download Catalog‌

Explore Carterberg's full range of industrial quick couplings and request OEM/ODM quotes.