Piston type self operated control valve
Piston type self operated control valve
Product feature
Piston type self-operated regulator which can adjust the pressure as the set value with it’s medium own energy and without any outer energy.The most advantages of this Piston type self-operated regulator is that it can be suitable for the working place of no power and no pneumatic equipment available, additional,Piston type self-operated regulator can save energy for the end-user, and the pressure is adjustable within the set range.
Piston type self-operated regulator has the following types according to the different working conditions:
ZZYP(single-seat type), ZZYM(sleeve type) and ZZYN(double-seat type), and PPiston type self-operated regulator also has three different covers such as common one, long-neck one and cooling type. For different applications, this PPiston type self-operated regulator is piston actuator,and the self-operated control valve has three different types of actuators:film/piston/bellows.
Piston type self-operated regulator has other advantages as smart and accurate regulating,taking up small space and simple operation and it’s widely used in the pressure control of gas,steam or water in petroleum, chemical, electric power, metallurgy, food, textile, machinery, civil construction industry.
Piston type self-operated regulator is designed and manufactured according to the standard of AMSE/API/BS/DIN/GB
Piston type self operated regulator material list
| Component name | Control Valve Material |
| Body/Bonnet | WCB/WCC/WC6/CF8/CF8M/CF3M |
| Valve spool/Seat | 304/316/316L(overlaying stellite alloy) |
| Packing | Normal:-196～150℃ is PTFE,RTFE,>230℃ is flexible graphite |
| Gasket | Normal:Stainless steel with flexible graphite,Special:Metal tooth type gasket |
| Control valve stem | 2Cr13/17-4PH/304/316/316L |
| Diaphragm Cover | Normal:Q235,Special:304 |
| Diaphragm | NBR with reinforced polyester fabric |
| Spring | Normal:60Si2Mn,Special:50CrVa |
Piston type self operated regulator technical parameter
| Nominal diameter DN(mm) |
20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Coefficient(KV) | 5 | 8 | 12.5 | 20 | 32 | 50 | 80 | 125 | 160 | 320 | 450 | 630 | 900 |
| Rated stroke(mm) | 8 | 10 | 12 | 15 | 18 | 20 | 30 | 40 | 45 | 60 | 65 | ||
| Nominal diameter DN(mm) |
20 | ||||||||||||
| The seat diameter DN(mm) |
2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 15 | 20 | |
| Coefficient(KV) | 0.02 | 0.08 | 0.12 | 0.20 | 0.32 | 0.5 | 0.80 | 1.20 | 1.80 | 2.80 | 4.0 | 5 | |
| Nominal pressure | MPa | 1.6，2.5，4.0，6.4(6.3)/2.0，5.0，11.0 | |||||||||||
| Bar | 16，25，40，64(63)/20，50，110 | ||||||||||||
| Lb | ANSI：Class150、Class300、Class600 | ||||||||||||
| pressure range 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、900～1200、1000～1500、 1200～1600、1300～1800、1500～2100、 |
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| Flow characteristic | Quick opening | ||||||||||||
| Adjust the accuracy | ±5-10(％) | ||||||||||||
| Working TemperatureT(℃) |
-60～350(℃) 350～550(℃) | ||||||||||||
| Leakage | Class IV；Class VI | ||||||||||||
Piston type self operated regulator size and weight
| Nominal diameter DN(mm) |
20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||
| B | 383 | 512 | 603 | 862 | 1023 | 1380 | 1800 | 2000 | 2200 | ||||||
| L(Pn16、25、40) | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | ||
| L(PN64) | 230 | 260 | 300 | 340 | 380 | 430 | 500 | 550 | 650 | 775 | 900 | ||||
| pressure range KPa |
15～140 | H | 475 | 520 | 540 | 710 | 780 | 840 | 880 | 940 | 950 | ||||
| A | 280 | 308 | |||||||||||||
| 120～300 | H | 455 | 500 | 520 | 690 | 760 | 800 | 870 | 900 | 950 | |||||
| A | 230 | ||||||||||||||
| 280～500 | H | 450 | 490 | 510 | 680 | 750 | 790 | 860 | 890 | 940 | |||||
| A | 176 | 194 | 280 | ||||||||||||
| 480～1000 | H | 445 | 480 | 670 | 740 | 780 | 780 | 850 | 880 | 930 | |||||
| A | 176 | 194 | 280 | ||||||||||||
| Weight (Kg) (PN16) |
26 | 37 | 42 | 72 | 90 | 112 | 130 | 169 | 285 | 495 | 675 | ||||
Piston type self operated regulator structure drawing
