Dwyer Instruments CHP-V | Calibration Vacuum Pump 0-28HG
The Dwyer Instruments CHP-V Calibration Vacuum Pump is a rugged pneumatic hand pump designed to generate vacuum from 0 to -28.8 in. Hg for calibration and verification of vacuum gauges, pressure switches, and transmitters. Its Acetal plastic and anodized aluminum construction helps reduce body heat transfer that can otherwise affect calibration readings.
Genuine Control Techniques stock · Free UAE-wide shipping
Part Number: CHP-V
Request a quote in under a minute — call +971 6 5436933.
Product Overview
The Dwyer CHP-V is a durable pneumatic calibration hand pump designed for vacuum-side testing and verification of pressure instrumentation. It generates vacuum from 0 to -28.8 in. Hg, making it suitable for calibrating and verifying vacuum gauges, switches, transmitters, and related pressure instruments.
The pump uses a combination of Acetal plastic and anodized aluminum in its construction. This design helps inhibit body heat transfer to the pump, reducing the potential for temperature-related effects on calibration readings and supporting stable measurement during verification work.
Oversized check valves provide controlled and smooth pump operation, while two O-rings on each piston help prevent leakage during use. The CHP-V also features approximately 4 in³ of displaced volume, providing practical pumping capacity for calibration applications.
The unit includes a 2-foot hose, 1/8" female NPT gauge fitting, and 1/8" NPT pipe plug. It has two 1/8" female NPT ports, with one fitted with the removable plug, allowing flexible connection of the instrument and reference equipment.
For applications requiring positive pressure rather than vacuum, the CHP-P uses the same general construction and is rated for output up to 100 psi.
Key Benefits
- Generates vacuum from 0 to -28.8 in. Hg
- Designed for calibration and verification of vacuum gauges, switches, and transmitters
- Acetal plastic and anodized aluminum construction helps inhibit body heat transfer
- Oversized check valves provide smooth, controlled operation
- Dual O-rings on each piston help prevent leakage
- Approximately 4 in³ displaced volume
- Two 1/8" female NPT ports for instrument and reference connections
- Includes 2-foot hose, 1/8" female NPT gauge fitting, and 1/8" NPT pipe plug
- Compact design suitable for bench and field calibration work
- Genuine Dwyer stock with free UAE-wide shipping
Who This Product Is Best For
The Dwyer CHP-V is suited for:
- Calibration technicians verifying vacuum gauges
- Instrumentation technicians testing pressure switches and transmitters
- Maintenance teams performing vacuum-side instrument verification
- Bench calibration applications
- Field technicians requiring a portable pneumatic vacuum source
- Applications where minimizing pump-body heat transfer is important for stable readings
How to Use
- Connect the instrument under test to one of the CHP-V's 1/8" female NPT ports.
- Connect a reference vacuum gauge to the second port, or use the supplied 2-foot hose as required.
- Operate the hand pump to generate the required vacuum level.
- Compare the instrument reading with the reference reading.
- Adjust or verify the instrument as required for the calibration procedure.
Frequently Asked Questions
What vacuum range does the Dwyer CHP-V provide?
The CHP-V generates vacuum from 0 to -28.8 in. Hg.
What is the CHP-V used for?
It is designed for calibration and verification of vacuum gauges, pressure switches, transmitters, and other vacuum-side pressure instruments.
What construction helps reduce calibration drift?
The CHP-V uses Acetal plastic and anodized aluminum construction, which helps inhibit body heat transfer that could otherwise influence calibration readings.
How does the CHP-V help prevent leakage?
Each piston uses two O-rings, helping maintain a sealed pumping system during operation.
What connections does the CHP-V have?
The pump has two 1/8" female NPT ports, with one port fitted with a removable plug.
What accessories are included with the CHP-V?
The CHP-V includes a 2-foot hose, 1/8" female NPT gauge fitting, and 1/8" NPT pipe plug.
What is the maximum pressure limit of the CHP-V?
The stated maximum pressure limit is 150 psig (10.34 bar). The pump is intended for vacuum calibration applications with an output range of 0 to -28.8 in. Hg.
What is the temperature limit for the CHP-V?
The stated temperature limit is 150°F (65.6°C).
What is the difference between the CHP-V and CHP-P?
The CHP-V is designed for vacuum generation up to -28.8 in. Hg, while the CHP-P is designed to generate positive pressure up to 100 psi. The appropriate model depends on whether vacuum or positive-pressure calibration is required.
Is genuine Dwyer CHP-V stock available with UAE shipping?
Yes. Genuine Dwyer stock with free UAE-wide shipping is available. Call +971 6 5436933 for current pricing and availability.
Request a Quote Today
For pricing, stock availability, or ordering assistance for the Dwyer CHP-V Calibration Vacuum Pump, contact General Tech Services LLC.
Call: +971 6 5436933
Website: www.generaltechshop.ae
