Description
Explosion-Proof Electric Control Valve Overview
VTON’s explosion-proof electric control valves are specifically designed for industrial processes requiring safety from sparks and explosions. These valves utilize advanced explosion-proof actuators with built-in servo amplifiers, eliminating the need for external devices. The system supports input control signals (4-20mA or 1-5VDC) and single-phase power, enabling precise control over pressure, flow rate, temperature, and liquid levels.
The explosion-proof electric control valves feature a top-guided control mechanism and are equipped with 3810 series actuators for seamless operation. Their compact structure, exceptional durability, and high protection performance make them ideal for hazardous environments in industries such as power generation, oil and gas, chemical processing, metallurgy, and environmental protection.
Performance Indicators
| Item | Value |
|---|---|
| Basic Error (%) | V3810L: ±2.5; PSL: ±1.0 |
| Backlash (%) | V3810L: ±2.0; PSL: ±1.0 |
| Dead Zone (%) | 1.0 |
| Rated Stroke Error (%) | ≤2.5 |
| Leakage (L/h) | 0.01% × Rated Valve Capacity |
| Adjustment Range (R) | 30:1 |
Technical Parameters
| Nominal Diameter (DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Valve Seat Diameter (dn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
| Rated Flow | Single Seat | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 |
| Coefficient (KV) | Single Seat | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 360 | 570 | 850 |
| Double Seat | 8 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 | 900 | |
| Allowable Pressure Difference (MPa) | Single Seat | 3.8 | 3.2 | 3 | 2 | 1.8 | 1.5 | 1.4 | 1 | 0.7 | 0.6 | 0.5 | 0.3 |
| Double Seat | 6.4 | 6.4 | 5.2 | 4.6 | 4.6 | 3.7 | 3.7 | 3.5 | 3.1 | 3.1 | 2.6 | 2.2 | |
| Nominal Pressure (MPa) | ≤ Nominal Pressure | 1.6, 2.5, 4.0, 6.4, 10.0 | |||||||||||
| Rated Stroke (mm) | 16 | 25 | 40 | 60 | 100 | ||||||||
| Valve Cover Type | Standard (-17～+250℃), High Temperature (+250～+450℃), Low Temperature (-40～-196℃), Wave Tube Sealed Type (-40～+350℃) | ||||||||||||
| Bonnet Type | Bolted Bonnet | ||||||||||||
| Sealing Material | V-type Polytetrafluoroethylene (PTFE), V-type Flexible Graphite | ||||||||||||
| Valve Type | Single Seat, Double Seat | ||||||||||||
| Flow Characteristic | Linear, Equal Percentage | ||||||||||||
| Actuator Type | 3810 Series Electric Actuator (or Customer Specified Brand) | ||||||||||||
| Power Supply | 220V, 380V, Input Signal: 4-20mA or 1-5VDC, Output Signal: 4-20mA DC | ||||||||||||
| Actuator Protection Level | Equivalent to IP65, Explosion-proof Mark: ExdⅡBT4 (ExdⅡBT6 Special Order), Manual Function, Handle | ||||||||||||
| Operating Temperature | -25～+70℃, Humidity: ≤95% | ||||||||||||
Material Specifications
| Part Name | Material Options | |||
| Valve Body | WCB(ZG25) | CF8(304) | CF8M(316) | CF3M(316L) |
| Seat Sleeve | 304 | 304 | 316 | 316L |
| Valve Core | 304 | 304 | 316 | 316L |
| Guide Sleeve | 304 | 304 | 316 | 316L |
| Valve Cover | WCB(ZG25) | CF8(304) | CF8M(316) | CF3M(316L) |
| Seal Packing | PTFE, Flexible Graphite | |||
| Packing Gland | 304 | 304 | 316 | 316L |
