Ravands controls provides thermoplastic ball valves, non-return valves, foot valves and butterfly valves. These ravands ball valves are available with salient features like both upstream and down stream sides with safety parts making the valve true union; self lubricating teflon seats; minimum pressure loss due to full port design; unique ball design for minimum operating torque; blow-out proof stem; better sealing by adjustable seat support; and actuator mounting provision with support blocks; bs 21 standard threaded couplings; bs 4504, din 8063 and asa ansi b 16.5 150 standards flanged couplings; and din 16962 standards socket fusion; rotatable flange for easy alignment with opposite flange.