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

Manual adjustment valve JYS21-25
No	figure number	Name
1	GB 30-76 M10×16-Q	Hexagonal screw
2	GB/T 95-1985 10	Flat washer - Class C
3	GB/T 93-1987 10	Standard spring washer
4	SDTYF-00-01	Hand wheel
5	SDTYF-00-02	Locking handle
6	SDTYF-00-20	Screw
7	SDTYF-00-21	Spring cover
8	SDTYF-00-22	Bearing pad
9	GB 301-64 8202	Single row thrust ball bearing
10	SDTYF-00-23	Spring pressure pad
11	SDTY-00-03A	Inner spring
12	SDTY-00-00	Spring support cover
13	GB/T 73-1985 M8×12	Slotted flat end set screw
14	SDTYF-00-05A	Outer spring
15	SDTYF-00-04	Spring seat
16	SDTYF-00-07	Plugging
17	GB 1235-76 50×3.1	O-ring
18	GB/T 70.1-2000 M8×30	Hexagon socket head cap screw
19	SDTY-00-06	Fuzheng set
20	GB 1235-76 16×2.4	O-ring
21	SDTYF-00-08	Retaining ring
22	GB 1235-76 25×2.4	O-ring
23	SDTYF-00-17	Valve ring
24	SDTYF-00-24	Wave spring
25	SDTYF-00-11	Drain slippery sleeve
26	GB 1235-76 32×3.1	O-ring
27	SDTYF-00-12	Drain slippery sleeve
28	SDTTF-00-15	spring
29	SDTYF-00-16	Oil sliding sleeve
30	GB 1235-76 54×3.5	O-ring
31	GB/T 119.1-200 3×12	Cylindrical pin
32	SDTYF-00-26	Drain flange
33	SDTYF-00-25	Drain plunger
34	SDTYF-00-09	Drain flange
35	SDTYF-00-18	Valve body
36	SDTYF-00-27	Inlet flange
37	GB/T 70.1-2000 M10×35	Hexagon socket head cap screw
38	SDTYF-00-19	Under plug
39	GB 1235-76 40×3.5	O-ring
40	SDTYF-00-10	Oil flange
41	SDTYF-00-13	Oil inlet plunger
42	GB/T 70.1-2000 M5×18	Hexagon socket head cap screw
43	GB 1235-76 11×1.9	O-ring
44	SDTYF-00-14	Oil inlet blind flange

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