QZFM pneumatic insulation combination valve has the characteristics of light weight, reliable sealing and small volume, mainly used for synchronous gravel sealing layer car, which can effectively avoid the leakage of asphalt and make the whole asphalt circulation system more automatic.
pressure rating: 1MPA operating temperature:- 20°C- 240°C applicable medium: Bituminous medium with high viscosity and non-corrosive
QZFM pneumatic insulation combination valve is mainly composed of asphalt inlet, left outlet, control port, right outlet and return tank port. The opening and closing of cylinder is used to control the pipeline, so as to realize the control of asphalt flow direction.Have the following characteristics:
1. Primary casting molding of valve body heat preservation cavity is simple, with large thermal insulation contact surface and good effect;The valve stem seal adopts two stage seal to improve seal reliability.
2. There is a sealing protective cavity in the support seat. The sealing gland is installed at the bottom of the inner cavity of the sealing protective cavity.This can effectively prevent the trace leakage of asphalt and dust from the seal into the cylinder, affecting the normal operation of the cylinder.
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