Ametek T-800 [T-811-M] Pneumatic Hand Pumps, 1/8in BSP Female, -26 inHg to 13 psi. The T-800 Series pneumatic hand pump is a bicycle style pump designed to generate pressure or vacuum with ease. This economic solution is perfect for quick applications up to 200 psi and down to -26 inHg, and a built in fine adjust makes controlling pressure simple. Four different models are available for vacuum or pressure, with either NPT or BSP connections.