Regulators, also known as control valves, in the field of industrial automation process control, by accepting the control signals output by the control unit, by means of power operation to change the final control elements of the process parameters such as medium flow, pressure, temperature, liquid level. It usually consists of an actuator and a valve. According to the characteristics of the stroke, the regulating valve can be divided into straight stroke and angular stroke; according to the power used by the actuator, it can be divided into three types: pneumatic regulating valve, electric regulating valve and hydraulic regulating valve; according to its function and characteristics There are three kinds of linear characteristics, equal percentage characteristics and parabolic characteristics. The regulating valve is suitable for air, water, steam, various corrosive media, mud, oil and other media. English name: control valve, the number is usually the beginning of FV. Commonly used classification of regulating valves: pneumatic regulating valve, electric regulating valve, hydraulic regulating valve, self-operated regulating valve

Pneumatic control valve JYQ21-25
No	figure number	Name
1	GB/T 70.1-2000 M8×20	Hexagon socket head cap screw
2	GB/T 95-1985 8	Standard spring
3	QDTYF-00-01	Cylinder top cover
4	QDTYF-00-02	Diaphragm
5	QDTYF-00-04	Screw
6	QDTYF-00-03	tray
7	QDTYF-00-05A	spring
8	GB/T 70.1-2000 M10×45	Hexagon socket head cap screw
9	GB/T 93-1987 10	Standard spring washer
10	QDTYF-00-08	Cylinder lower cover
11	QDTYF-00-07	Press plate
12	SDTYF-00-07	Plugging
13	GB 1235-76 50×3.1	O-ring
14	GB/T 70.1-2000 M8×30	Hexagon socket head cap screw
15	QDTYF-00-06	link
16	QDTYF-00-08	Baffle
17	GB 1235-76 25×2.4	O-ring
18	GB 1235-76 16×2.4	O-ring
19	SDTYF-00-17	Valve plate
20	SDTYF-00-11	Drain slip sleeve
21	GB 1235-76 32×3.1	O-ring
22	SDTYF-00-24	Wave spring
23	SDTYF-00-12	Drain slippery sleeve
24	SDTYF-00-15	spring
25	SDTYF-00-16	Oil sliding sleeve
26	SDTYF-00-25	Drain plunger
27	GB 1235-76 54×3.5	O-ring
28	GB/T 119.1-2000 3×12	Cylindrical pin
29	SDTYF-00-26	Drain flange
30	GBT/T 70.1-2000 M5×18	Hexagon socket head cap screw
31	GBT/T 70.1-2000 M10×35	Hexagon socket head cap screw
32	SDTYF-00-09	Drain flange
33	SDTYF-00-18	Valve body
34	SDTYF-00-13	Oil inlet plunger
35	GB 1235-76 11×1.9	O-ring
36	SDTYF-00-27	Inlet flange
37	SDTYF-00-14	Oil inlet blind flange
38	SDTYF-00-10	Oil flange
39	GB 1235-76 40×3.5	O-ring
40	SDTYF-00-19	Under plug

TAG：