The document provides detailed ordering information for low, medium, and high-pressure valves manufactured by M.S. Jacobs & Associates, Inc., including configurations for needle and check valves at pressures ranging from 15,000 psi to 60,000 psi. Specifications include various materials, dimensions, and options available for customization of valves. Additionally, it covers the standard operating conditions and construction details for the needle valves designed for both gas and liquid flow control.