Product description:

Summary

ZJHN pneumatic diaphragm seat regulating valve with double guide structure, equipped with multi spring actuator. The utility model has the advantages of compact structure, light weight, sensitive action, large valve capacity, accurate flow characteristics, convenient assembly and disassembly, etc.. Widely used in the precise control of gas, liquid, steam and other media, such as the process parameters such as pressure, flow, temperature, liquid level is maintained at a given value. The utility model is especially suitable for the occasions with large pressure difference, and the utility model is also provided with a large leakage, and is not very clean.

This series of products are standard type, bellows seal type, jacket insulation and other varieties. The nominal pressure rating of the product is PN16, 40, 64, the valve body diameter range DN25 ~ 400. Applicable fluid temperature in the range of -250 DEG C to +560 C. Leakage standards for grade III and IV. Flow characteristics are linear or percentage. A wide variety of specifications available.

Main parts material

Part name material temperature range on the valve cover HT200-20 to 200 DEG ZG230-450-40 to 450 DEG ZG1Cr18Ni9Ti-250 to 550 DEG ZG0Cr18Ni12Mo2Ti-250 to 550 DEG 1Cr18Ni9-250 to 550 DEG C, the spool valve seat 0Cr18Ni12Mo2Ti-250 to 550 DEG -40 to 200 DEG C filler PTFE diaphragm NBR rubber clip reinforced fabrics made from polyester film cover A3 60Si2Mn compression spring

Specifications and technical parameters

Nominal diameter mm253240506580100125150200250300400 rated flow coefficient kv101625406310025025040063010016002700 nominal pressure MPa1.6 4 6.4 stroke mm medium temperature -40 degrees to 230 degrees (Chang Wenxing), fin 230 to 450 DEG C (medium temperature), a special order of -100 to 600 DEG C, linear flow characteristics such as the percentage of standard flange with JB78-59, JB79-59, JB/79.1-94, JB/79.2-94, according to ANSI, JIS, DIN and other standards to order production of body material PN (MPa) 1.6WCB (ZG230-450) CF3CF8 CF8M4.0,6.0WCB (ZG230-450), ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti CF8 CF8M type valve, valve material, 0Cr18Ni12Mo2Ti CF8 1Cr18Ni9 CF8M on the cover of ordinary type (Chang Wenxing), hot chip (medium temperature) adjustable ratio 30:1 joint source M16× 1.5

Note: can provide users with ANSI, JPI, JIS flange products, the flange distance according to user needs to determine.

Main technical parameters of actuator

Model ZHA (B) -2ZHA (B) -3ZHA (B) -4ZHA (B) -5ZHA (B) -6 effective area cm220028040063010001600 stroke mm10162540601000 spring range KPa20 ~ 100 (standard); 20 ~ 100, 40 ~ 200, 20 ~ 60, 60 ~ 100, 80 ~ 240

Main technical performance index

The project index value of basic error% with ± 5 ± with a locator locator; 1; differential% with 3 1 dead% with a locator locator locator locator with 0.4 3 without leakage. L/h1× 10-3× rated capacity

Can be equipped with accessories locator: electric valve positioner hａnd wheel solenoid valve limit switch electric / gas converter air filter pressure reducer