ZZYP Self Acting Pressure Reducing Valve (PRV)

Self Acting Pressure Reducing Valve
Self Acting Pressure Reducing Valves

Introductions

ZZYP type self acting pressure reducing valve is a valve that without any external energy, using controlled media energy as power source, introduce the implement diaphragm to produce thrust, control the throttle components movement to achieve the automatic regulation. It has the comprehensive functions of measurement, implementation, control.

It can be used in no gas, no electricity places, and widely used for automatic control in petroleum, chemical, power station, light industry, printing and dyeing industry self-control system of various equipment gases, liquids and steam medium pressure deceleration and regulation (regulating pressure after the valve), pressure relief and regulation (regulating pressure before the valve). According to the users different working conditions, we can choose different valve core structure type and different actuator, in order to achieve the best control effect.

Dimensions & Constructral Diagram

Self Acting Pressure Reducing Valve Constructral Diagram
Self Acting Pressure Reducing Valve Constructral Diagram
category model category model
single seat press closed type ZZYP-16～64B single seat press closed type ZZYP-16～64K
double seat press closed type ZZYN-16～64B double seat press closed type ZZYN-16～64K
sleeve press closed type ZZYM-16～64B sleeve press closed type ZZYM-16～64K

Notes: 1. Press closed type regulates pressure after the valve, when the pressure increases after valve, the valve is closed, to achieve decompression, regulation purposes.
2. Press open type regulates pressure after the valve, when the pressure increases after valve, the valve opens, to achieve pressure relief, and regulation purpose.

Main Performance

control accuracy％ ±8
allowed leakage hard sealing（L/H） single seat（Ⅳ level）：≤ 10-4 valve rated capacity： double seats、sleeve（Ⅱ level）、≤ 5×10-3×valve rated capacity
soft sealing（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 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
allowed pressure differentia（MPa） 2.5 2.0 1.6 1.0
nominal pressure（MPa） 1.6　4.0　6.4
intrinsic flow characteristic fast open
minimum pressure differentia of ensuring regulating valve operation P（MPa） 0.05
pressure subsection scope （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 °C liquid≤ 140;gas≤ 80； equipped with condensers and heat sinks ≤ 350
applicable medium gas, steam, low viscosity liquids
flange dimension, type PN10、16、40GB9113-88、PN64JB/T7-94；PN10，16 BULGE，PN40，64 female type match other standard type flange according to customers requirements（如such as：ANSI、JIS、DIN,etc） 
face to face dimension According to GB12221-89 standard
matched components Condensers (for medium steam occasions), heat sinks, etc.
actuator signal connector internal thread M16×1.5

Note: Pressure sub-section scope can be designed according to user requirements.

Installation Examples

External 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 regulation scope 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 regulation scope MPa 15～140 Φ282 Φ308
120～300 Φ232
280～1000 Φ196 Φ196 Φ282
600～2500 Φ85 Φ96
approximately weight（Kg） 26 37 42 72 90 114 130 144 180
impluse pipe interface thread M16×15