Product details
RZ self operated pressure regulating È¤Ó®µç¾ºAPP is a kind of energysaving control device which does not need additional driving energy, relies on the pressure of the regulated medium as the power and its pressure change, and automatically adjusts according to the preset setting value. It integrates the functions of detection, control and execution in one È¤Ó®µç¾ºAPP, and forms an independent instrument control system. The product is composed of low flow resistance single seat (sleeve) È¤Ó®µç¾ºAPP body, bellows (sleeve) balancing parts and actuator. It is a new generation of È¤Ó®µç¾ºAPP products in line with national standards,
Its characteristics are as follows 1. Energy saving automatic control system without additional driving energy, low equipment cost, suitable for explosive environment; 2. Simple structure and small maintenance workload; 3. The set point is adjustable and wide range, which is convenient for users to adjust continuously within the setting range; 4. Diaphragm actuator has higher detection precision and more sensitive action than cylinder type actuator; 5. The pressure balance mechanism is adopted in the È¤Ó®µç¾ºAPP, which makes the regulating È¤Ó®µç¾ºAPP sensitive, accurate in control and large in allowable pressure difference; The utility model has the advantages of simple structure, easy maintenance and no need of external gas pressure regulation. When there is no external power supply, gas supply and gas pressure control. Main technical parameters of pressure regulating È¤Ó®µç¾ºAPP
Nominal diameter (DN) 
twenty 
twentyfive 
thirtytwo 
forty 
fifty 
sixtyfive 
eighty 
one hundred 
one hundred and twentyfive 
one hundred and fifty 
two hundred 
two hundred and fifty 
three hundred 
Rated flow coefficient (kV) 
six point three 
ten 
sixteen 
twentyfive 
forty 
sixtythree 
one hundred 
one hundred and sixty 
two hundred and fifty 
four hundred 
six hundred and thirty 
one thousand and one hundred 
one thousand seven hundred and fifty 
Rated stroke (mm) 
eight 
ten 
fourteen 
twenty 
twentyfive 
forty 
fifty 
sixty 
seventy 
Nominal pressure (PN) 
16£»40£»64 CL150£»300£»600 
Pressure regulation range (kPa) 
15~50 40~80 60~140 120~220 160~220 200~260240~300 280~350 330~400 380~450 480~560 540~620600~700 680~800 780~900 880~1000 950~1500 1000~2500 
Flow characteristics 
Go ahead 
Adjustment accuracy% 
¡À5 
Service temperature (¡æ) 
Liquid ¡Ü 120; gas ¡Ü 80; 
Allowable leakage 
Hard seal (L / h) 
Single seat: ¡Ü 104 È¤Ó®µç¾ºAPP rated capacity (IV); double seat, sleeve: ¡Ü 5 ¡Á 103 È¤Ó®µç¾ºAPP rated capacity (class II) 
Soft seal (L / h) 
zero point one five 
zero point three zero 
zero point four five 
zero point six zero 
zero point nine zero 
one point seven 
four 
six point seven five 
eleven point one zero 
sixteen 

Decompression ratio 
maximum 
ten 
minimum 
one point two five  Note: the pressure regulating range can be manufactured according to the user's requirements.
Material of main parts of pressure regulating È¤Ó®µç¾ºAPP
È¤Ó®µç¾ºAPP body 
WCB£¨ZG230450£© 
ZG1Cr18Ni9Ti£¨304£© 
ZG1Cr18Ni12Mo2Ti£¨316£© 
Valve core and È¤Ó®µç¾ºAPP seat 
1Cr18Ni9Ti£¨304£© 
1Cr18Ni9Ti£¨304£© 
1Cr18Ni12Mo2Ti£¨316£© 
Stem 
1Cr18Ni9Ti 
1Cr18Ni9Ti 
1Cr18Ni12Mo2Ti 
diaphragm 
Butadiene rubber, ethylene propylene rubber, chloroprene rubber, oil resistant rubber 
Membranous cap 
A3, A4 steel coated with tetrafluoroethylene 
filler 
Polytetrafluoroethylene, flexible graphite 
Spring 
60Si2Mn 
Guide sleeve 
HPb591 
Main structure diagram of pressure regulating È¤Ó®µç¾ºAPP
Nominal diameter (DN) 
twenty 
twentyfive 
thirtytwo 
forty 
fifty 
sixtyfive 
eighty 
one hundred 
one hundred and twentyfive 
one hundred and fifty 
two hundred 
two hundred and fifty 
three hundred 
L 
PN16¡¢40 
one hundred and fifty 
one hundred and sixty 
one hundred and eighty 
two hundred 
two hundred and thirty 
two hundred and ninety 
three hundred and ten 
three hundred and fifty 
four hundred 
four hundred and eighty 
six hundred 
seven hundred and thirty 
eight hundred and fifty 
PN64 
two hundred and thirty 
two hundred and thirty 
two hundred and sixty 
two hundred and sixty 
three hundred 
three hundred and forty 
three hundred and eighty 
four hundred and thirty 
five hundred 
five hundred and fifty 
six hundred and fifty 


B 
three hundred and eightythree 
five hundred and twelve 
six hundred and three 
eight hundred and sixtytwo 
one thousand and twentythree 
one thousand three hundred and eighty 
one thousand and eight hundred 
two thousand 
two thousand and two hundred 
H 
pressure adjust Range KPa 
15~140 
four hundred and seventyfive 
five hundred and twenty 
five hundred and forty 
seven hundred and ten 
seven hundred and eighty 
eight hundred and forty 
eight hundred and eighty 
nine hundred and fifteen 
nine hundred and forty 
one thousand 
130~300 
four hundred and fiftyfive 
five hundred 
five hundred and twenty 
six hundred and ninety 
seven hundred and sixty 
eight hundred 
eight hundred and seventy 
eight hundred and eighty 
nine hundred 
nine hundred and fifty 
280~500 
four hundred and fifty 
four hundred and ninety 
five hundred and ten 
six hundred and eighty 
seven hundred and fifty 
seven hundred and ninety 
eight hundred and sixty 
eight hundred and seventy 
eight hundred and ninety 
nine hundred and forty 
480~1000 
four hundred and fortyfive 
four hundred and eighty 
six hundred and seventy 
seven hundred and forty 
seven hundred and eighty 
eight hundred and fifty 
eight hundred and sixty 
eight hundred and eighty 
nine hundred and thirty 
600~1500 
four hundred and fortyfive 
five hundred and seventy 
six hundred 
eight hundred and twenty 
eight hundred and ninety 
nine hundred and fifty 
one thousand 
one thousand and one hundred 
one thousand and two hundred 
1000~2500 
four hundred and fortyfive 
five hundred and seventy 
six hundred 
eight hundred and twenty 
eight hundred and ninety 
nine hundred and fifty 
one thousand 
one thousand and one hundred 
one thousand and two hundred 
A 
pressure adjust Range KPa 
15~140 
¦Õ280 
¦Õ308 
130~300 
¦Õ230 
280~1000 
¦Õ176 
¦Õ194 
¦Õ280 
600~2500 
¦Õ85 
¦Õ96 
Connecting thread of pressure pipe 
M16¡Á1.5 
















 Flange: can be manufactured according to ANSI standard. 