The automatic enrichment valve is composed of PTC, wax and valveneedle.
自动加浓阀主要由ptc、石蜡体和针阀组成。
2
The upper end of the adjusting screw (7) is provided with a frustum-shaped valveneedle (6).
所述调节螺杆(7)的上端具锥台形阀针(6)。
3
A pressure relief valve from the main valve, pressure relief / holding pressure pilot valveneedlevalve, ball valve, micro shaped filter and pressure gauge hydraulic control over the system.