Bulk Carrier Information Magazine No. 37 Summer 2019

Durable for high-frequency and high-speed opening and closing use.

Traditionally, ball valves and butterfly valves have been widely used as compressed air-operated automatic valves that can open and close quickly and have low fluid flow resistance. However, they have had issues with "durability and high-speed operation." These issues are rarely problematic under normal usage conditions, but they can become significant in the switching valves for cooling water in the hot rolling lines of steel mills, which are used for high-frequency and high-speed opening and closing. Because the valve seat is made of a dynamic seal or metal seat, repeated operations lead to wear and damage of the valve seat, making it difficult to maintain good sealing performance over long periods. The limit for the number of open and close cycles was around 100,000 to 200,000 (about 10,000 to 20,000 cycles if the internal fluid is gas). Additionally, in cases of short opening and closing times (high-speed operation), the rapid stopping can cause a water hammer phenomenon, leading to a sudden pressure rise upstream of the valve, which adversely affects the seat packing and the valve body support bearings. This can damage the seat packing and support bearings, rendering the valve inoperable. To address these issues, we began the development of a cylinder valve as an automatic operation valve. As a result, we were able to not only solve the aforementioned problems but also complete the valve with various additional features.

• valve

Due to its full-flow structure, fluid resistance is minimal! A corrosion-resistant valve with excellent heat resistance.

The "PFA Lining Ball Valve PF2 Type" is a valve manufactured by Japan Valqua, with all wetted parts lined with scientifically inert PFA resin, offering excellent corrosion resistance. PFA resin has the best thermal stability among fluoropolymers and does not undergo aging or degradation even when exposed to high temperatures of 260°C for extended periods. Additionally, due to its full-flow structure, it has minimal fluid resistance and smooth flow, resulting in extremely low pressure loss. We also offer the "PFA Lining Check Valve PSC20 Type," suitable for highly corrosive fluids that metal valves cannot withstand. 【Features】 ■ Excellent corrosion resistance ■ Does not contaminate liquids ■ Excellent heat resistance ■ Extremely low pressure loss ■ Easy maintenance *For more details, please refer to the PDF document or feel free to contact us.

• valve

Published the standard size table for piping materials with Valflon lining manufactured by Nippon Vulcanization Industry!

This catalog includes the standard dimension table for piping materials of "Vulfron Lining" manufactured by Japan Vulcan Industry Co., Ltd., handled by Goko Shoji Co., Ltd. We introduce various products such as "lining steel pipes," "bellows," and "pliable hoses," which allow for easy bending and compact piping with fewer joints. [Contents] ■ List of fluororesin properties ■ Lining steel pipes (PTTE) ■ Bellows ■ Flexible hoses ■ Pliable hoses *For more details, please refer to the PDF document or feel free to contact us.

• Piping Materials

The "Mechanical Stitch Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact to the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

On November 6th (Thursday) to 7th (Friday), 2025, we held the "Human Body Day 2025" at the NAC Image Technology Akasaka Multi-Purpose Space. We have uploaded videos of the highlights from each company and the presentations that took place on the day to our website. We encourage you to take a look. ---[Report on Human Body Day 2025 is here]------------------- https://info.nacinc.jp/jintaiday2025-report ------------------------------------------------------------------------- On the day of the event, participants were able to experience a wide range of products in a hands-on session format, including motion capture, force plates, eye tracking, and human body analysis software. We received numerous comments from attendees expressing high satisfaction, saying, "It was great to gain various information all at once," which makes us very happy. NAC Image Technology will continue to provide "valuable products to our customers." We hope you will join us for our next event as well.

Features: ● Equipped with Intel Core Ultra 7 255H/7 155H/5 225H/5 125H ● LPDDR5x 16GB/32GB/64GB onboard ● M.2 NVMe 256GB onboard ● USB 2.0 x 8, USB 3.2 (10Gbps) x 4 ● PCIe Gen 4 [x8] x 1, PCIe Gen 3 [x1] x 4, PCIe Gen 3 [x4] x 1 (2 lanes co-lay with SATA; BOM option) ● 2.5GbE x 2 ● COM-HPC Mini standard, size 95mm x 70mm ● Optional items ECB-980A: Development carrier board HPC-ARHm-FAN01: CPU fan HPC-ARHm-HSP01: Heat spreader (Note: heat dissipation is required in the enclosure)

Features: ● Equipped with Jetson AGX Orin 32GB/64GB ● Gigabit LAN ×1, 10Gigabit LAN ×1 ● USB 3.2 Gen 2 (Type-A) ×4 ● DB-9 connector ×1 (for DIO 8 channels) ● DB-9 connector ×2 (supports RS-232/422/485: Rx/Tx/RTS/CTS) ● Jetpack 6.0.0 pre-installed