Rotary cross valve in type THFX(two-way valve) is the equipment to change material ... pneumatic suction system.Rotary cross valve in type THFX(two-way valve) is the equipment to change material direction ... places, so it is very convinent to operation. Two-way valve is widely used in the pressure, negative pressure ... , grain, feed, sugar, product of chemical industry etc. Two-way valve in type THFX