Products: J641H Pneumatic gate valve with double-acting cylinder, use the upper chamber or the lower chamber into the intake air to remote control valve, easy and flexible. Cylinder use medium: compressed air, nitrogen. Simple structure, manufacture and easy maintenance; small working stroke, closing time is short; closing body (valve) seat sealing surface with cone seal, small closing force, erosion resistance, reliable seal. Seat may be replaceable seat, it can be any combination of closed counterpart sealing surface material to meet the conditions required to extend the service life. Features: 1, selected materials, in line with domestic and foreign standards, reasonable structure, beautiful shape. 2, the valve seat sealing surface using iron-based alloy or Stellite (Stellite) cobalt-based alloy cladding made of wear-resistant, high temperature, corrosion, anti-abrasion performance, long life . 4, stem quenched and the nitrogen treatment, with good corrosion resistance and scratch resistance. 5, can be a variety of standard pipe flanges and flange sealing surface types to meet various project needs and user requirements. 6, the full range of body materials, packing, gaskets, according to the actual working conditions or user requirements reasonable matching can be applied to all kinds of pressure, temperature and medium conditions. 7, inverted sealed with screw connection seal seat or body made of austenitic stainless steel welding, reliable sealing, replace the packing can be carried out without stopping the machine, convenient, does not affect system operation. Model: J641H-16C / P / R / RL, J641H-25C / P / R / RL, J641H-40C / P / R / RL Related Keywords: pneumatic valve, gas control valve, modulating pneumatic valve, high-temperature pneumatic shut-off valve