ZHLS small single-seat regulating valve structure is compact, has S streamlined channel, make its loss of the pressure drop is small, large flow, adjustable range and flow characteristic of high precision, IEC534-1-1976 standard.

Regulating valve leakage is in line with the ANSI B16.104 standards. Regulating valve with spring thin film actuator, its compact structure, large output force.

This product conforms to GB/T4213-92

Technical parameters and performance

The valve body

Style: through single-seat casting ball valve

Nominal size: 20, 25mm

Nominal pressure: ANSI125, 150, 300, 150

JIS 10, 16, 20, 30, 40 k

PN1.6, 4.0, 6.4MPa

Connection type: flange connection: FF, RF, RJ, LG, groove type, embedded type

Flange standard, JIS B2201-1984, ANSI B16.5-1981, JB/T79.1-94, etc

Welding connection: scarf welding SW

Material: cast steel (ZG230-450), cast stainless steel (ZG1Cr18Ni9Ti ZGZ1Cr18Ni12Mo2Ti ZG316L), titanium, etc

On the cover: normal model (P) : 17 ~ + 230 ℃

Elongation type I (EI) : 45 ~ - 17 ℃ + 230 ~ + 230 ℃

Elongation type II (EII) : - 100 ~ 45 ℃

Elongation type III (EIII) : 196 - - 196 ℃

Note: working temperature is allowed to exceed allowed scope of various materials.

Gland type: bolt clamp type

Packing: v-type ptfe, containing leaching woven ptfe asbestos, asbestos, graphite

Components in the valve

Valve core type, single type plunger valve core

Flow feature: the metal seat: percentage (% CF) and linear properties (LCF), refer to figure 1 and figure 3

Cv from 0.4-14 high precision flow characteristic IEC534-2-1976 standard

Soft seat: percentage % (TF) and the linear properties (LTF), refer to figure 2 and figure 3

Note: about ptfe seat working temperature and pressure difference, please refer to figure 5

Material: stainless steel (1 cr18ni9ti, 1 cr18ni12mo2ti, ph, 9 cr18 17-4, 316 l), titanium alloy, stainless steel welding company too and corrosion resistant alloy, etc.

Enforcement agencies

Style: HA more spring film actuators

Diaphragm material: ethylene propylene rubber nylon fabric, nitrile butadiene rubber clip to nylon fabric

Spring range: 20 ~ 100, 80 ~ 240 kpa

Gas supply pressure: from 140 to 400 kpa

Air interface: Rc1/4"

Ambient temperature: - 30 ~ + 70 ℃

Valve action style: valve with positive action or reaction actuator gas shut type or open type

Attachment: positioner, air filter and pressure relief device, a valve, the stroke switch, valve position transmitter, hand wheel, etc

performance

Valve leakage: metal seat: less than 0.01% of the rated capacity, in line with the ANSI B16.104-1976 level iv

Soft seat: less than the rated capacity of the 10-7, conform to the ANSI B16.104-1976 level iv

Bring back to the poor: locator small all over 1% of the trip,

Without a locator small all over 3% of stroke (LHAI type small 5% of all travel)

Basic error: bring small all over travel locator plus or minus 1%

Without a locator small throughout the journey of plus or minus 5% (VPE for plus or minus 3%, LHAI with HEP is + / - 2%)

Note: the standard of v-type ptfe packing

Adjustable range: 50:1 Cv 14 or less or less (0.25) or spake (Cv 0.16 or less)