WSC - Water Specialties Company

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The 1/2" Wilkins Model 420 pressure vacuum breaker began production in 2007 and was discontinued in 2013. The 460 was replaced with the 460XL, which is the lead free version. The 460 was designed as a spill resistant vacuum breaker. The check assembly is self contained and has a replacable seat. Leaded and lead free versions use the same internal parts. The bonnet has a built in tool to disassemble the check assembly.