Webstone 41672 Pro-Pal® 41672 Standard Ball Valve, 1/2 in Nominal, FNPT x MNPT x FNPT x Hose End Style, Full Port, Import

  • Actuator Type: Lever Handle
  • Ball Material: HCP Brass
  • Country of Origin: CN
  • Domestic/Import: Import
  • End Style: FNPT x MNPT x FNPT x Hose
  • Inlet to Outlet Length: 3-3/8 in
  • Manufacturer Name: NIBCO Inc.
  • Media: Gas/Oil/Water
  • Nominal Size: 1/2 in
  • Orifice Size: 1/2 in
  • Port Type: Full
  • Pressure Rating: 600 psig WOG
  • Series: Pro-Pal® 41672
  • Softgoods Material: PTFE
  • Top to Inlet Center: 1-9/16 in
  • Trim Material: Brass Stem and PTFE Seat
Designed for residential, light commercial use with water or oil. This approved Webstone Valve allows for isolation and draining of an expansion tank in a closed loop hydronic heating system. It is actuated by a blow-out proof stem and features an adjustable packing gland. Threaded ends company with ANSI B1.20.1.
  • Features and More


  • Full port forged brass ball valve with hi-flow hose drain
  • Allows for isolation and draining of an expansion tank in a closed loop hydronic heating system
  • Easily install, isolate, drain and replace any expansion tank
  • Quickly connect entire system to the cold water feed
  • MNPT model for direct connection to air separator or tee
  • Saves 36 min
  • Replace five component
  • Eliminate four leak path
  • PTFE seat/stem seal
  • The 3-way ball controls flow between the expansion tank and the system
  • EPDM washer
  • Brass stem
  • Blow-out proof stem
  • Guaranteed for life
  • Ideal for use with Webstone air separator
  • Saves 54 minutes of labor


  • Residential and Commercial Applications


  • ANSI B1.20.1
  • PROP65: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.


  • Lifetime