Manual ventilation volume regulating valve (manual multi-leaf ventilation regulating valve)

Manual multi-leaf ventilation regulating valve is suitable for industrial plants and civil buildings in ventilation, air conditioning systems in new wind transport and exhaust gas emission and air purification projects. A lëu bï ya looi bï ya looi bï ya looi bï ya looi bï ya looi bï ya looi bï ya looi bï ya looi bï ya looi bï ya looi. Ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ, ka tɛmɛ

Multi-leaf ventilation regulating valve is divided into two types of manual and electric, valve section size is manufactured according to the national ventilation standard air tube size. Valve ye kɔc cɔl 'valve' ye kɔc cɔl 'valve' ye kɔc cɔl 'valve' ye kɔc cɔl 'valve'. Manual ventilation regulating valve is divided into two types of handle and hand wheel type. Manual ventilation regulating valve is divided into two types of handle and hand wheel type. Manual ventilation regulating valve is divided into two types of handle and hand wheel type. Thermal insulation type regulating valve in the link inner side makes a 35 mm thick insulation layer, insulation material is polystyrene, the site installation is convenient, the appearance is beautiful. Thermal insulation type regulating valve in the link inner side makes a 35 mm thick insulation layer, the insulation material is polystyrene, the site installation is convenient, the appearance is beautiful.