this listing is for 1 piece

product Features:

• Ideal for use when a gauge needs frequent calibration or verification
• Installs between pressure gauge and the process
• Isolates the process from the gauge in order to calibrate the gauge
• Equipped with end cap 
• Materials: Brass
• Max Pressure: 3000 PSI (200 bar / 20 MPa)
• Max Operating Temperature: 225 °F (105 °C)
• Max Vacuum: 0 InHg (0.0 kPa)
• Min Operating Temperature: 0 °F (-18 °C)
• Seal Materials: Buna-N, Delrin, Teflon
• End 1 Connector: 1/2" Male  
• End 2 Connector: 1/2" Female  
• End 3 Connector: Male Quick-test