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Other valve series

Self operated pressure regulating valve

● Reliable Quality

● Reasonable Price

● Fast Delivery

Service Hotline: +86-21-33758111

Product Details

Technical Parameters

Nominal diameter: DN20~200mm

Pressure range: PN1.0~6.4MPa

Use medium: steam, non-corrosive liquid, gas

Manufacturing standard: GB/T4213-1992

Flange standard: GB/T9113-2000

Structure length: GB/T12221-1989

Valve material: WCB, CF8

Leakage level: ANSI B16.104-1976 (level IV)

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

Compression type (B type)

DN		15	20	25	32	40	50	65	80	100	125	150	200	250	300
L	PN16/40	150	150	160	180	200	230	290	310	350	400	480	600	650	740
L	PN64 100	206	206	210	230	251	286	311	337	394	450	508	650	690	770
H		495	495	502	514	517	522	600	605	653	708	770	785	877	990
A		Φ132、Φ196、Φ232、Φ282、Φ308
L1		233	233	233	332	332	373	572	552	673	980	900	1200	1270	1600
P≥		45	45	70	102	140	185	245	325	425	550	660	900	1135	1350
Weight(Kg)		26	26	26	36	37	42	73	90	115	130	145	180	200	250

Press open type (K type)

DN		15	20	25	32	40	50	65	80	100	125	150	200	250	300
L	PN16/40	150	150	160	180	200	230	290	310	350	400	480	600	650	740
L	PN64 100	206	206	210	230	251	286	311	337	394	450	508	650	690	770
H		495	495	502	514	517	522	600	605	653	708	770	785	877	990
H1		83	83	83	93	95	110	128	140	160	215	230	268	385	420
A		Φ132、Φ196、Φ232、Φ282、Φ308
L1		233	233	233	332	332	373	572	552	673	980	900	1200	1270	1600
P≥		45	45	70	102	140	185	245	325	425	550	660	900	1135	1350
Weight(Kg)		26	26	26	37	39	45	76	98	120	143	151	189	212	273