Product model: DHLS
Nominal diameter: DN20, 25mm
Nominal pressure: ANSI 150, 300, 600; JIS 10、16、20、30、40K； PN1.6、4.0、6.4MPa
Operating temperature: ≤ 450 ℃
Main materials: cast steel, cast stainless steel, titanium, Hastelloy and other corrosion-resistant alloys
Flange standards: JIS, JB, ANSI, HG, etc
PRODUCT OVERVIEW
The electric small caliber single seat regulating valve is equipped with L series electronic actuator, which has the advantages of small volume, light weight, large thrust, strong function, built-in servo amplifier, convenient operation and high reliability. The fluid channel is s streamlined, with small pressure drop loss, large flow, high accuracy of flow characteristics and wide adjustable range. Large guiding area and good vibration resistance.
TECHNICAL PARAMETER
| Valve type | Straight through single seat cast ball valve | |
|---|---|---|
| Nominal diameter | 20、25mm | |
| Nominal pressure | ANSI 150、300、600； JIS 10、16、20、30、40K；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、JB79-59etc. | |
| Welding standard | Caulking weldingSW | |
| Material Science | Cast steel(ZG230-450)、Cast stainless steel(ZG1Cr18Ni9Ti、ZG1Cr18Ni12Mo2Ti、ZG00Cr18Ni12Mo2Ti)、Titanium, etc | |
| Upper bonnet | Normal temperature type | -17~+230℃ |
| Elongation type I | -45～-17℃ +230～+566℃ | |
| Gland type | Bolt compression type | |
| Sealing packing | V-type polytetrafluoroethylene filler, asbestos filler containing impregnated polytetrafluoroethylene, asbestos woven filler and graphite filler | |
| Spool form | Single seat plunger valve core | |
| Flow characteristics | Equal percentage characteristic, linear characteristic | |
| Material Science | Stainless steel, stainless steel surfacing stellite alloy, titanium and Hastelloy alloy, etc | |
TECHNICAL PARAMETERS OF ACTUATOR
| Actuator type | 3810L series, PSL series | |
|---|---|---|
| Input signal | 3810LExecuting agency | 4 ~ 20mA · DC or 1 ~ 5V (input resistance 250 Ω) |
| PSLExecuting agency | 4～20mA·DC | |
| supply voltage | 3810LExecuting agency | 220V，50/60Hz |
| PSLExecuting agency | Single phase control 220V · 50Hz; Three phase control 380V, 50Hz | |
| Manual mechanism | 3810LActuator: clutch type; PSL actuator: handwheel | |
| Action form | Electrically closed or electrically open | |
MAIN PERFORMANCE INDEXES
| Parameter | Index value | |
|---|---|---|
| Leakage | Metal seat | Less than 0.01% of the rated capacity of the valve, in accordance with ANSI b16.104-1976 class IV |
| Soft seat | Less than 10-7 of the rated capacity of the valve, in accordance with ANSI b16.104-1976 class VI | |
| Return difference | 2% with 3810l actuator; 1% with PSL actuator | |
| Basic error | ± 2% with 3810l actuator; ± 1% with PSL actuator | |
| Adjustable range | 50:1(0.25≤Cv≤14)or30:1(Cv≤0.16) | |
Main connection dimensions
Nominal diameter DN（mm） | H | φB | C | E | |||
| Normal temperature type P | Elongation type I E1 | Elongation type II E2I | Elongation type II E2w | ||||
| 20 | 375 | 525 | 685 | 900 | 218 | 230 | 40 |
| 25 | 450 | 600 | 760 | 975 | 267 | 281 | 40 |
