Home Product Control Valve Series Self-Operated Control Valve

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Self-operated valve front pressure control valve

Technical Specifications

Sales Hotline：

0086-21-59110018

Product Details

Product overview

The pressure regulating valve in front of the self-operated valve is composed of the valve body and the balance spring. No external energy is required. The pressure of the medium to be adjusted is used as the power source to introduce the actuator to push the spring to control the position of the valve core, and to change the pressure difference and flow at both ends, so that the The pressure in front of the valve is stable, the action is sensitive, the sealing performance is good, and the pressure set point fluctuation is small. It is widely used in automatic control of decompression and pressure stabilization of gas, liquid and steam media.

Performance characteristics

1. The pressure setting value of the pressure regulating valve in front of the self-operated valve may also be adjusted during operation;

2. It adopts quick-opening flow characteristics, with sensitive action, high adjustment degree and good sealing performance;

3. Automatic control of gas, liquid, steam and other medium pressure in various industrial equipment;

4. Customized high pressure type or high temperature type can be selected according to the pressure and temperature used on site.

Product number

Category	Model
Single seat press open	ZZYP-16～64K
Two-seat push-to-open type	ZZYN-16～64K
Sleeve press open type	ZZYM-16～64K

Press-to-open type: It is used to adjust the pressure before the valve. When the pressure after the valve rises, the valve opens to achieve the purpose of pressure relief and stabilization.

The 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 differential pressure (MPa)	2.5					2.0			1.6			1.0
Nominal pressure (MPa)	1.6 4.0 6.4
Inherent flow characteristics	Open quickly
The minimum pressure difference P (MPa) to ensure the normal operation of the pressure regulating valve	0.05
Pressure segment range (KPa)	15～50 40～80 60～100 80～140 120～80 160～220 200～260 240～300 280～350 330～400 380～450 430～500 480～560 540～620 600～700 680～800 780～900 800～1000 900～2000
Working temperature ℃	Liquid≤140; gas≤80; with condenser and heat sink≤350
suitable medium	Gas, steam, low viscosity liquid
Flange size and type	PN10, 16, 40GB9113-88, PN64JB/T7-94; PN10, 16 male, PN40, 64 male or other standard flanges (such as ANSI, JIS, DIN, etc.)
Structure length	According to GB12221-89 standard
Actuator signal interface	Internal thread M16×1.5

Note: The pressure segment range can be designed according to user requirements.

Main performance indicators

Control precision %		±8
Allowable leakage	Metal seat（L/H）	Single seat (Class IV): ≤10-4 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

Main external connection 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 rang e（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 rang e（MPa）	15～140	φ282		φ308
		120～300	φ232
		280～1000	φ196					φ196			φ282
		600～2500	φ85	φ96
WT（Kg）			26		37		42	72	90	114	130	144	180