| 摘要 |
PROBLEM TO BE SOLVED: To ensure sufficient resistance even to a refrigerant and additive- containing refrigerating machine oil and maintain strength and sealing performance, in a valve slide excelling in heat resistance and free of deformation and rupture even in an operation under a high pressure condition of a new refrigerant and the like. SOLUTION: The valve slide for a directional control valve used in a heat pump system is a molding of a polyphenylene sulfide resin composition with a modulus of bending elasticity of over 4,000 MPa to 20,000 MPa.
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