Supply of self-regulating valve [Anhui much self-control valve safety and mechanical wholesale]

YAZ-type self-pressure regulating valve is an external drive without the need of energy, relying on their own pressure medium was transferred to the power source and media pressure changes, according to pre-set settings for automatic adjustment of the energy-saving control device. It combines the detection, control, perform many functions in one valve, of an independent instrument control system. Since no external energy of the product, the product structure is simple, easy to use, less maintenance, etc., especially for urban heating, heating, and no external power supply, gas supply and because they need to control steam pressure of the occasion. According to foreign reports, urban heating, heating system uses the product, energy efficiency than before 30% -40%, the effect is significant. 

 Features: 
 No additional driver-controlled energy-efficient energy systems, low-cost equipment for explosive environments; simple structure, less maintenance; set point adjustable and wide range of user-set range of continuous adjustment; perform a mechanical diaphragm cylinder-type institutions than high precision and sensitive action; valve with pressure balance mechanism, so that control valve responsive, precise control and allow the pressure great. 

 Materials for main parts 
 Body: ZG230-450, ZG1Cr18 Ni9Ti, ZGCr18 Ni12Mo2Ti 
 Spool: 1Cr18 Ni9Ti, Cr18 Ni12Mo2Ti 
 Seat: 1Cr18 Ni9Ti, Cr18 Ni12Mo2Ti 
 Stem: 1Cr18 Ni9Ti, Cr18 Ni12Mo2Ti 
 Membrane cover: A3, A3 PTFE coated stainless steel 
 Packing: NBR, B. Bing, fluorine, oil resistant rubber 
 The main technical parameters 
 Nominal diameter 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 
 Nominal stroke (mm) 8 10 14 20 25 40 50 60 70 
 Nominal pressure PN (Mpa) 1.6,4.0,6.4 
 Pressure adjustment range (MP a) 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 980 ~ 1500 1000 ~ 2500 
 Flow characteristics (℃) to open soon 
 Regulation accuracy (%) ± 5 
 Temperature (℃) ≤ 350 
 Allowable leakage seal (1 / h) single-seat: ≤ 10 ˉ 4 valve rated capacity (IV class); seat, sleeve: ≤ 5 × 10 ˉ 3 valve rated capacity (II level) 
 Soft Seal (m1 / h) 0.15 0.30 0.45 0.60 0.90 1.7 4.0 6.75 11.10 16.0 
 Decompression than the maximum 10 
 Minimum 1.25 




 Ordering Information 
 1 Model and name 2 Nominal diameter DN (mm 3. Nominal 4 flow characteristics required 5 body material and trim material 
 6 media type and temperature range 7. Valve before and after the pressure (pressure) 8. Seal in the form 9. Matching accessories