When not connected to another JoinTech Connector this will not allow any flow. Incredibly useful on Pump or Glycol systems.  

Compatible with:
KL41102 - JoinTech Female Connector with Auto Shut Off x 13mm Barb
KL50739 - JoinTech Female Connector with Auto Shut Off x 1/2 Inch BSPT Male

Features:

• JoinTech Black UV Stable Design
• Equipped with Auto Shut Off Valve
• Vacuum Rating of 60psi
• Connections:
  • Male Plug Quick Disconnect
  • 1/2" BSP
• Medical Grade Materials:
  • Body: High-Strength, Chemically Resistant Polyketone Plastic
  • Spring: 316 Stainless Steel
  • O-Ring: EPDM
• Operating Pressure: Vacuum to 60 PSI
• Temperature Tolerance: -40°C to 138°C
• 3/8" Flow Path