First, the self-pressure regulator valve Overview
ZZYP-type self-pressure regulator valve is a need without additional energy, the use of the controlled media its own energy as a power source, the introduction of the executive chamber to produce thrust to control the throttle element movement to automatically adjust. With measurement, implementation, control of the integrated features. Available in no gas, no electricity place. Widely used in petroleum, chemical, power plants, light industry, printing and dyeing industry, automatic control system for a variety of equipment, gas, liquid and steam media deceleration pressure, regulator (for the valve pressure regulator) relief pressure, Pressure control) automatic control. According to different working conditions, users can choose different spool structure types and different actuators to achieve the best control effect.
 

Second, self-pressure regulator valve model

category	model	category	model
Single-seat pressure-type	ZZYP-16 ~ 64B	Single-seat pressure-type	ZZYP-16 ~ 64K
Double-seat pressure-type closure	ZZYN-16 ~ 64B	Double-seat pressure-type closure	ZZYN-16 ~ 64K
Sleeve pressure closed type	ZZYM-16 ~ 64B	Sleeve pressure closed type	ZZYM-16 ~ 64K

Pressure-closed: for the valve pressure regulator, when the valve pressure increases, the valve closed, in order to achieve decompression, the purpose of regulating. 
Pressure type: for the valve pressure regulator, when the valve pressure increases, the valve opens, in order to achieve pressure relief, the purpose of regulating. 

Third, self-pressure regulating valve main technical parameters

Nominal diameter DN (mm)	20				25	32	40	50	65	80	100	125	150	200
Seat diameter DN (mm)	10	12	15	20
Rated flow coefficient Kv	1.8	2.4	4.4	4	11	20	30	48	75	120	190	300	480	760
Allowable pressure difference (MPa)	2.5					2.0			1.6			1.0
Nominal pressure (MPa)	1.6 4.0 6.4
Inherent flow characteristics	Go ahead
Regulators to ensure the normal work  of the smallest pressure difference P (MPa)	0.05
Pressure Segment Range (KPa)	15 to 50 40 to 80 60 to 100 80 to 140 120 to 80  160 to 220 200 to 260 240 to 300 280 to 350 330 to 400  380 to 450 430 to 500 480 to 560 540 to 620 600 to 700  680 to 800 to 780 900 800 ~ 1000 900 ~ 2000
Operating temperature ℃	Liquid ≤ 140; gas ≤ 80; with the condenser and heat sink ≤ 350
Suitable medium	Gas, steam, low viscosity liquid
Flange size, type	PN10,16, 40GB9113-88, PN64JB / T7-94; PN10,16 convex, PN40,64 convex  or according to user requirements matching other standard types of flange (such as: ANSI, JIS, DIN and other standards)
Structure length	Press GB12221-89 standard
Actuator signal interface	Female thread M16 × 1.5

Note: The pressure of the sub-range can be designed according to user requirements. 
   
Fourth, self-pressure regulator valve main performance indicators

control precision%		± 8
Allowing the vent  leak amount	Hard Seal (L / H)	Single-seat (Ⅳ grade): ≤10-4 Valve rated capacity: two-seater, sleeve (Ⅱ level), ≤5 × 10-3 × valve rated capacity
	Soft seal (ml / min)	DN (mm)
		20	25	32	40	50	65	80	100	125	150	200
		0.15		0.3		0.45	0.6	0.9	1.7	4.0		6.75

Fifth, self-pressure regulating valve can be equipped with accessories
condenser (for the medium for steam occasions), heat sink, etc. 

Six, self-pressure regulating valve dimensions and weight

Nominal diameter (DN)			20	25	32	40	50	65	80	100	125	150	200
L		PN16,40	150	160	180	200	230	290	310	350	400	480	600
		PN64	230	230	260	260	300	340	380	430	500	550	650
B			233		332		373	522		673	980		1200
H	Pressure adjustment range  (MPa)	15 ~ 140	475		520		540	710		780	840	880	915
		120 ~ 300	455		500		520	690		760	800	870	880
		280 ~ 500	450		490		510	680		750	790	860	870
		480 ~ 1000	445		480			670		740	780	850	860
		600 ~ 1500	445		570		600	820		890	950	950	1000
		1000 ~ 2500	445		570		600	820		890	950	950	1000
A	Pressure adjustment range  (MPa)	15 ~ 140	φ282		φ308
		120 ~ 300	φ232
		280 ~ 1000	φ196					φ196			φ282
		600 ~ 2500	φ85	φ96
About weight (Kg)			26		37		42	72	90	114	130	144	180