Grease injection fittings manufactured by belgaum industries, an iso 9001:2000 unit manufacturing high pressure check valves. Grease injection fittings, also know as body lube fittings/ vented cap body grease fittings, are best for service up to 5,000 psi its main material of construction is aisi 4140 or en 19 and international part number of this iten is bgf 12. Two grease injection fittings are required for making one highpressure gate valve. The company also provides thses valves in aisi 316.