Valves
Self-reliance Pressure Regulator
Self-reliance Pressure Regulator
Features
Self-reliance type pressure regulator attached temperature tank can be continuous under 350℃ steam. Shanghai Yihuan flow control equipment Co.,ltd produced self-reliance type pressure regulator is widely used in urban heating, heating system, petroleum, chemical industry, electric power, metallurgy, food, light industrial equipment gases, liquids, steam and other media pressure relief valves, constant pressure.
Self-reliance type pressure regulator without needing external energy, using medium itself power as power supply, leading in actuator control core position, change two ends pressure differential and flow, makes the pressure stable before valve (or after). It has the smart action, good sealing performance, pressure setting point small fluctuations advantages, is widely used in gas, liquid and steam medium depressure stabilizing pressure or automatic control. This series of products are single seat (ZZYP), sleeve (ZZYM), double seat(ZZYN) three structures: actuators have diaphragm, piston type two kinds: acting types decompression after valve pressure regulating (B type) and pressure regulating before pressure relief valve (K type). Nominal pressure rating has PN16, 40, 64, Valve size range DN20 ~ 300, Leakage class is class II, level IV and VI, Flow characteristic is fast opening, Pressure section adjustment is 15 ~ 250Mpa. Can combine according to need in order to meet user requirements.
Technical parameters and performance indicators
body：ZG230-450、ZG1Cr18Ni9Ti 、ZGCr18Ni12MoTi
core：1Cr18Ni9Ti、Cr18Ni12Mo2Ti
seat：1Cr18Ni9Ti、Cr18Ni12Mo2Ti
stem：1Cr18Ni9Ti、Cr18Ni12Mo2Ti
diaphragm cover：A3、1Cr18Ni9Ti packing:PTFE, flexible graphite
diaphragm: NBR, oil resistant rubber, fluororubber
Detail technical parameters
| DN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| rated flow coefficient Kv | 7 | 11 | 20 | 30 | 48 | 75 | 120 | 190 | 300 | 480 | 760 | 1100 | 1750 | |
| rated stroke L(mm) | 8 | 10 | 14 | 20 | 25 | 40 | 50 | 60 | 70 | |||||
| PN(Mpa) | 1.6、4.0 | |||||||||||||
| pressure adjustable scope（Kpa） | 15～50、40～80、60～100、80～140、120～180、160～220、200～260 240～300、280～350、330～400、380～450、430～500、480～560、540～620、 600～700、680～800、780～900、880～1000、600～1500、1000～2500 |
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| intrinsic flow characteristic | fast open | |||||||||||||
| adjustable accuracy(%) | ±5 | |||||||||||||
| applicable temperature（℃） | ≤350 | |||||||||||||
| allowed leakage | hard sealing (1/h) | signle seat：≤10-4×rated volume（Ⅳ）, double seat and sleeve：≤5×10-3 rated volume（Ⅱ） | ||||||||||||
| soft sealing (m1/min) | 0.15 | 0.30 | 0.45 | 0.60 | 0.90 | 1.70 | 4.0 | 6.75 | 11.10 | 16.0 | ||||
| decompression | Max. | 10 | ||||||||||||
| Min. | 1.25 | |||||||||||||
External dimensions （unit：mm）Note: the flange length according to PN16
Self-reliance Pressure Regulator Structure
Self-reliance Pressure Regulator Dimensions Diagram
| （DN） | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| flange length (L) | 185 | 200 | 205 | 222 | 254 | 276 | 298 | 352 | 410 | 451 | 600 | 670 | 735 |
| total height (H) | 615 | 645 | 650 | 710 | 730 | 745 | 760 | 800 | 890 | 960 | 1050 | ||
| H1 | 52.5 | 57.5 | 67.5 | 72.5 | 80 | 90 | 97.5 | 107.5 | 122.5 | 140 | 167.5 | 225 | 230 |
| D | 100 | ||||||||||||
| H | 280 | ||||||||||||
| flange standard | GB：PN1.6、2.5、4.0Mpa ANSI：150、300Lb JIS：10K、20K | ||||||||||||
Installation diagram
Measuring gas, pressure regulating before valves (K type), can not install filter Measuring gas, pressure regulating after valves (K type), can not install filter
Measuring liquid, pressure regulating before valves (K type), should install filters for the uncleaning fluid
Measuring liquid, pressure regulating after valves (B type), should install filters for the uncleaning fluid
Measuring steam, pressure regulating before valves (K type), should install insulation tank, suggest install filters
Measuring steam, pressure regulating after valves (B type), should install insulation tank, suggest install filters