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  6. Coupling | CPC Coupling LQ4 Series (For Liquid Cooling Applications Only)

Coupling | CPC Coupling LQ4 Series (For Liquid Cooling Applications Only)

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CPC Coupling LQ4

last updated:Mar 09, 2026

サンワ・エンタープライズ
サンワ・エンタープライズ
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A metal medium-sized model that has further evolved the non-spill technology to minimize liquid dripping during coupling disconnection and air intrusion during connection to the utmost limit.

The LQ4 series is a drip-less style coupling that is ideal for use in liquid cooling applications that require high reliability. The newly designed valve structure minimizes spillage during coupling disconnection and ensures a smooth disconnection after long-term connection. ■ Adopts a button mechanism for intuitive operation ■ Non-spill structure that minimizes liquid dripping and air contamination ■ Button color coding for line identification is possible ■ Unique new mechanism prevents sealing part adhesion during long-term connection

    Coupling
44e.jpg

Coupling | CPC Coupling LQ4 Series (For Liquid Cooling Applications Only)

44e.jpg
44e.jpg LQ4.gif LQ4.9.gif Lq4.4.gif LQ4.8.gif LQ4.1.gif LQ4.10.gif LQ4.2.gif LQ4.7.gif
  • To the homepage of the "LQ4 series"
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basic information

LQ4 Series Specifications Operating Pressure Range: Vacuum to 0.83Mpa Applicable Temperature Range: -17℃ to 115℃ Material: Main Material: Brass (Surface Chrome Plated) Valve and Latch: Polysulfone Valve Spring: SUS302 Outer Spring: SUS302 Seal: EPDM Lubricating Oil: Krytox PFPE Spillage (during disconnection): 0.0Mpa disconnection results in 0.025cc 0.83Mpa disconnection results in 0.055cc Air Inclusion (during connection): 0.025cc upon connection Note: When disconnecting the coupling, please restrict the flow in the system to 11 liters/minute or less for proper valve operation.

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Applications/Examples of results

Liquid cooling applications

Detailed information

  • LQ4.gif

    LQ4D 17004BUL/RED Tube inner diameter: 6.4mm (1/4”) Total length: 63.3mm

  • LQ4.9.gif

    LQ4D 22004BUL/RED Tube inner diameter: 6.4mm (1/4”) Total length: 56.4mm

  • Lq4.4.gif

    LQ4D 17006BUL/RED Tube inner diameter 9.5mm (3/8”) Total length: 63.3mm

  • LQ4.8.gif

    LQ4D 22006BUL/RED Tube inner diameter 1/4” × outer diameter 3/8” Total length: 55.7mm

  • LQ4.1.gif

    LQ4 10004BUL/RED Screw standard: 1/4” NPT Total length: 58.7mm

  • LQ4.10.gif

    LQ4D 24004BUL/RED Screw standard: 1/4” NPT Total length: 51.9mm

  • LQ4.2.gif

    LQ4D 13006BUL/RED Tube inner diameter × outer diameter: 1/4” × 3/8” Total length: 62.5mm

  • LQ4.7.gif

    LQ4D 20006BUL/RED Tube inner diameter 1/4” × outer diameter 3/8” Total length: 55.7mm

catalog(9)

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Coupling | CPC Coupling LQ4 Series (For Liquid Cooling Applications Only)

Coupling | CPC Coupling LQ4 Series (For Liquid Cooling Applications Only)

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Coupling | CPC Coupling LQ2 Series

Coupling | CPC Coupling LQ2 Series

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Coupling | CPC Coupling "LQ6 Series" (For Liquid Cooling Applications Only)

Coupling | CPC Coupling "LQ6 Series" (For Liquid Cooling Applications Only)

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CPC Couplings 2016 Products Overview

CPC Couplings 2016 Products Overview

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Coupling | CPC Coupling PLQ2 Series

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Coupling | CPC Coupling

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CPC Dual Port Coupling DPC Series

CPC Dual Port Coupling DPC Series

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Sanwa Plumbing Parts General Catalog 2023-4

Sanwa Plumbing Parts General Catalog 2023-4

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News about this product(5)

[Tokyo Event: 30th and 31st] Perfect for equipment integration! We will hold a live demonstration of small couplings.

  • Seminar・Event

At the Sanwa Odaiba Satellite Showroom, we will hold a special exhibition every month with a designated theme. In January, it will be held on the 30th (Thursday) and 31st (Friday)! This special exhibition will focus on compact couplings that are ideal for integration in various devices and equipment that are becoming smaller. We will showcase actual products. We will display parts in various shapes, so you can find the perfect product! Sales representatives will also be present on the day. Please take this opportunity to gain insights for improving your company's equipment. <Date and Venue> Date: January 30 (Thursday) to January 31 (Friday), 2020 Time: 11:00 AM to 5:00 PM (Last admission at 4:00 PM) Venue: Sanwa Enterprise Satellite Showroom 2-4-32 Aomi, Koto-ku, Tokyo, TIME24 Building, 5th Floor, South-5 Advance Reservation: *Please make a reservation in advance when visiting. >>TEL: 048-871-0501<< For more details, please check the attached PDF. All staff members look forward to your visit.

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We have started distributing the comprehensive catalog of plastic piping components, "Sanwa Piping Components 2020 Comprehensive Catalog."

  • Catalog news

Sanwa Enterprise Co., Ltd. has published the comprehensive piping parts catalog "Sanwa Piping Parts 2020," featuring carefully selected products from over 5,000 plastic piping components. We introduce piping parts that enable "connecting," "stopping," and "disconnecting" in a total volume of 275 pages. Many new products are also included. We are currently offering this catalog for free to those who request it, so please feel free to request materials or contact us.

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Tokyo Event: Sanwa Piping Parts & Clippard Products Exhibition to be held for three days starting tomorrow.

  • Seminar・Event

We will hold an exhibition of piping components at our satellite showroom, which boasts a selection of 2,500 different items. On the day of the event, we will also have a special display of Clippard products (ultra-compact solenoid valves) that are not usually on display! Our sales representatives will be on-site to handle any technical inquiries. Additionally, we will distribute the Sanwa piping components comprehensive catalog (2020 edition) in advance! Be sure to get your copy! Exhibited items: CPC couplings, various small plastic fittings, plastic ball valves and needle valves, small check valves, filters and strainers of various types. You will also be able to see and handle Clippard products such as "pinch valves" and "diaphragm-type compact solenoid valves." We recommend making a reservation in advance through the contact information below when you visit. Email: info@sanwa-ent.co.jp TEL: 048-871-0501 We look forward to your visit.

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Next week: Kyoto - A comparative exhibition of the entire series of "CPC Couplings," renowned for medical, analytical, and beverage equipment (July 8-12).

  • Seminar・Event

CPC coupling makes connecting and disconnecting piping super easy! We will hold a physical exhibition event for plastic piping components in Kyoto. ◆New Products◆ We will showcase diaphragm-type solenoid valves and solenoid pinch valves for chemical liquids, available in sizes from tiny thumb-sized to various other sizes. We will also display the ultra-lightweight 4-gram original domestic model from Sanwa! The "metal-free diaphragm-type check valve" features a simple design and high cost-effectiveness. Samples will be available. ~Kyoto Private Exhibition~ From July 8 (Monday) to July 12 (Friday) Opening hours: 10:00 AM to 8:00 PM *On July 8 (Monday), doors open at 1:00 PM, and on July 12 (Friday), we close at 3:00 PM. 【Venue】YIC Kyoto Institute of Technology, Building 3, 6th Floor, Room 367 (7 minutes on foot from Kyoto Station Central Exit) ★We recommend making a reservation in advance when visiting.★ Admission is free >> TEL. 048-871-0501 For those in the product development and design department who are having trouble selecting piping components, our specialized staff will assist you in product selection while you handle the actual products. All staff members look forward to your visit.

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Companynews list (96)

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サンワ・エンタープライズ

サンワ・エンタープライズ

Machine elements and parts

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Our company was founded in 1971 and has been introducing unique and excellent products from overseas to our customers in Japan. We handle over 10,000 items, including fittings, couplings, various valves, and check valves. Among these, we take pride in being a pioneer in the market for small plastic piping components manufactured by CPC in the United States, such as CPC couplings, which we have been proposing since 30 years ago when brass and stainless steel were the norm. These products are widely used in small devices across various fields, including general industry, healthcare, food and beverage, printing, and experimentation, due to their features of being "compact," "lightweight," and "offering a wide variety." Additionally, in the field of industrial air equipment, we have been supplying products focused on "cooling," "blowing," and "air transport" using compressed air, including the "Cryogenic Air Generator Kolder," to manufacturing sites across various sectors for many years. In recent years, we have also been focusing on new product development in different fields, including springs made from PEEK resin. In April 2018, as part of our new initiative to improve customer satisfaction in industrial piping components, we opened a satellite showroom in Odaiba displaying approximately 2,500 items.

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