My company may be able to help. We manufacture compact manifold valves and have a wide varity of materials to suit given applications. These are generally intened for high pressure applications and may be more expensive than what you actually need. I'd need to know more to go into greater...
CORTEC Fluid Control manufacturers HP ball valves in both AS and SS. They are a compact design, full port and generally occupy 40% less space and are 40% lighter than conventional valves. Good pricing and delivery. (877)223-1967.