KB50D
Pneumatic Drain Ball Valve
Design Features
The pneumatic steam trap ball valve features a floating ball mechanism and a valve seat optimized for steam service. It enables rapid 90° angular stroke operation via a pneumatic actuator. The valve body incorporates anti-cavitation surface hardening, while the drain port integrates an optimized flow channel design for high-flow condensate discharge. Additionally, a thermal compensation sealing design compensates for high-temperature fluctuations.
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| Product Name | Pneumatic Drain Ball Valve |
| Model Number | KB50D |
| Nominal Diameter | NPS 3/4" ~ 4" (DN15 ~ DN100) |
| Pressure Rating | Class 150 ~ Class 4500 (PN16 ~ PN750) |
| Body Material | A105, F22, F91, F92, F316L, F316H, F304 |
| Bonnet Type | Standard Bonnet (for general service), Extended Bonnet (optional for high-temperature applications) |
| Seal Material | PTFE, Metal-to-Metal Seal, Hard Alloy (Stellite or Tungsten Carbide) |
| Leakage Class | ANSI Class VI (Bubble-tight Seal) |
| Medium Temperature | -40℃ ~ 650℃ |
| Connection Type | Butt-Weld (ASME B16.25, BW, Type 2) |
| Trim Configuration | Drain Port (D) |
| Control Accuracy | ±0.1% |
| Actuation Type | Pneumatic Actuator |
| Air Supply Pressure | 400–800 kPa |
| Air Inlet Port | RC1/4" (Metric Conical Thread, ISO 7/1) |
| Pneumatic Actuator | Optional (Double-Acting or Spring-Return) |
| Control Mode | On/Off Type (Two-Position Control), Modulating Type (4–20 mA Control) |
| Optional Accessories | Positioner, Air Filter Regulator, Lock-up Valve, Limit Switch Box, Valve Position Transmitter, Handwheel Operator, Solenoid Valve |
| Stroke (°) | 0° ~ 90° |
| Remarks | Other special seal materials or temperature requirements can be customized according to customer specifications. |
