John Guest® ProLock™ Black UV Union Connector

ProLock™ fittings incorporate the innovative and patented Twist & Lock™ feature that provides a secondary locking feature for added security and confidence. It can be installed in three quick steps. 1. Cut and clean burrs on the pipe. 2. Insert pipe fully into the fitting. 3. Turn locking cap quarter turn clockwise to the locked position; audible click will be heard; indicator marks will be aligned.

  • Polysulfone or PEX with an EPDM O-ring
  • Makes plumbing easy & quick
  • Can be used with copper, CPVC or PEX pipe
  • Approved for use in hot & cold water plumbing & hydronic heating applications
  • Not for gas, fuel oil or compressed air applications
  • When locked, an audible click will be heard & indicator marks will be aligned
  • NSF 61 listed & lead-free
  • Pressure ratings: 160 psi @ 73°F, 100 psi @ 180°F & 80 psi @ 200°F
Stock Description Catalog Pg. Price Add to Cart
3/8" CTS Black UV Polysulfone Union Connector
Item 58874
6.21/Each
Save 5% when you buy 20+
Save 10% when you buy 40+
Save 15% when you buy 120+
P-457
6.21/Each
1/2" CTS Black UV PEX Union Connector
Item 58750
5.51/Each
Save 5% when you buy 20+
Save 10% when you buy 40+
Save 15% when you buy 120+
P-457
5.51/Each
3/4" CTS Black UV Polysulfone Union Connector
Item 58875
7.39/Each
Save 5% when you buy 20+
Save 10% when you buy 40+
Save 15% when you buy 120+
P-457
7.39/Each
1" CTS Black UV Polysulfone Union Connector
Item 58876
16.78/Each
Save 5% when you buy 20+
Save 10% when you buy 40+
Save 15% when you buy 120+
P-457
16.78/Each