Feature 1. Machined from solid steel bar stock for durability. 2. These series employs a threaded sleeve locking mechanism, mates with matching male threads on the nipple. The two halves must be manually threaded together for connection. 3. Hard, chrome alloy balls are used for valving. They are spring loaded. 4. The valve provides a metal-to-metal seal between the ball and coined seat. 5. The interface seal is polyurethane which resists high pressure extrusion. 6. A threaded valve retainer provides a valve stop that assures positive valve alignment. Specifications 1. Material: Carbon Steel 2. Standard seal material: NBR (other material is available on request) 3.Temperature Range (STD seals): -20℃ to +80℃ Applications- This series bring to the industry a proven sensing for use on 1. construction equipment 2. orestry equipment 3. agricultural machinery 4. oil tools 5. steel mill machinery 6. other demanding hydraulic applications. wood box