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 ZZYN Double seat self-operated regulator also has three different covers such as common one, long-neck one and cooling type. For different applications, ZZYN Double seat self-operated regulator has three different types of actuators:film/piston/bellows.
ZZYN Double seat 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.
ZZYN Double seat self-operated regulator is designed and manufactured according to the standard of AMSE/API/BS/DIN/GB
ZZYN Double seat self operated regualtor pressure adjusting range
Note:1. ZZYN Double seat self-operated regulator take diaphragm type actuator for example. If the pressure of ZZYN Double seat self-operated regulator is 1000~3000KPa, please consult our customer service or sales people.
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 |