Specifications for Water Security System Locks

The NAIL II Valve Locking Device Offers:

  • Superior Engineering: designed for high quality,
    low maintenance, and light weight
  • Protective powder coated steel exterior, zinc coated interior which reduces corrosion and increases longevity
  • Laser precision cut design assuring a secure fit
  • Carbon steel gripping teeth for unparalleled strength
  • Memory steel centering guides for true alignment
  • Fits standard 2" operating nuts and fits inside 6" diameter
    (or greater) valve wells
  • Available in (4) lengths: 12", 24", 36" and 48"
    (other lengths available on a custom order basis)
  • Available in (4) colors: Red, Black, Yellow, Green
  • Manufactured in the U.S.A.
  • 1 year limited warranty

NAIL I Specifications

  • Superior Engineering: designed for high quality,
    low maintenance and light weight
  • Protective powder coated steel exterior reduces corrosion and increases longevity
  • Laser precision cut design assuring a secure fit
  • Fits within 8" diameter (or greater) valve wells
  • Available in (4) lengths: 12", 24", 36" and 48"
    (other lengths available on a custom order basis)
  • Available in (4) colors: Red, Black, Yellow, Green
  • Manufactured in the U.S.A.
  • 1 year limited warranty

EPA logoReview EPA Security Product Guides for Valve Lockout Devices (Water Security)

Objective of Valve Lockout Devices: To prevent or delay unauthorized access to a valve.

Application: Used to ensure a valve remains in the desired position and is not tampered with by an unauthorized individual.

Location Used: On valves located in water or wastewater treatment plants, remote facilities (pumping stations, etc.), water distribution systems, backflow prevention devices, and other piping systems.

  NAIL II Underground Water Valve Locking Device

The NAIL II is a U.S. Patented valve locking device. The device is precision made in
order to allow an operator to precisely align the valve nut with minimum effort.


Specify the NAIL
valve locking device

NAIL locking device logo


Review Benchmark Security Measures for Distribution Systems chart
from the Guidelines for Physical Security of Water Systems report.

Water Assn Logos


Review NAIL Water Valve Lock Benefits