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)
