Product Short Description
Product Name: Nor-Cal Pneumatic Bellowsless Right-Angle Valve, 1½ inch
Product Introduction: The ESVP-1502-NWB-5 is a right-angle, bellowsless poppet valve from Nor-Cal Products, designed for vacuum and industrial gas applications requiring large differential pressures, extremely high cycle rates, or dirty processes that would cause frequent bellows failures.
Description
Technical Specifications:
- Nominal port size: 1½ inch (38 mm)
- Flange type: NW-40B
- Flow coefficient (L/sec, molecular): 128.00
- Dimension A: 2.40 in (61.0 mm)
- Dimension B: 5.13 in (130 mm)
- Dimension C: 7.71 in (196 mm)
- Dimension D: 3.00 in (76 mm)
- Actuation: Pneumatic (air-open, spring-close configuration for standard ESVP models)
- Sealing: Double O-ring sealed poppet shaft
- Available sizes range: ⅜ inch through 1½ inch (9.53–38.1 mm)
Functional Characteristics: Bellowsless design eliminates the most common failure point in high-cycle or contaminated-process applications. The poppet-and-seat arrangement handles large pressure differentials.
Application Scenarios: Vacuum systems, semiconductor process gas lines, and any application characterized by heavy cycling, dirty process media, or high differential pressure that would destroy conventional bellows seals.
Material & Structural Features: Metal valve body with double O-ring poppet shaft seals. Heater jackets and alternative port/flange configurations available on request.
Working Principle: Compressed air actuates the poppet upward off its seat; spring force returns it to the closed position upon air release. Flow direction is generally bottom-in, side-out, but reverse installation is possible in special cases.
Installation Requirements: Mount in accordance with flow direction requirements. Pneumatic supply must meet the actuator’s pressure demands. Consult factory for heater jacket integration if high-temperature operation is required.
Usage Notes: Optional accessories include fittings, O-rings, air solenoids, microswitches, and actuators. Heater jackets and controllers are available for all valve sizes.
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