Cash Acme EB45 Pressure Regulating Valve 2 in NPT - Tamper-Resistant

Our review of the Cash Acme EB45 Pressure Regulating Valve finds it best suited for plumbers and building supervisors who need a compact, reliable way to hold downstream water pressure steady. The single biggest reason to buy is its tamper-resistant EB45 design combined with a half cartridge construction that lets you access the pressure adjusting screw quickly while delivering the performance of higher-end cartridge regulators. For anyone installing or maintaining potable water systems, this valve balances durable materials, easy tool-free installation and an adjustable 10 to 70 PSI range in a straightforward inline 2 in. package.

Key Features

• Tamper-resistant EB45 design: Locks the set pressure to prevent accidental changes and keeps system pressure consistent over time.
• Half cartridge access: Provides direct access to the pressure adjusting screw so adjustments and service are faster than with some traditional regulators.
• Tool-free installation: Insert the pipe and stainless steel teeth plus an O-ring form a secure, leak-resistant seal without complex fittings.
• Durable materials: Constructed of brass, stainless steel and metallic components to resist corrosion in potable water systems.
• Wide adjustable range: Factory rated at 60 PSI and adjustable between 10 and 70 PSI to suit a variety of residential and commercial needs.
• Hot and cold service: Rated for both cold and hot water use up to 180F, making it versatile for mixed plumbing systems.

Who It's For

This valve is ideal for commercial and residential plumbing pros who need a compact inline regulator for 2 in. NPT connections and value a tamper-proof setting. The quick access to the adjustment screw and tool-free pipe insertion save installation and maintenance time on jobs where system reliability matters.

Homeowners who are unfamiliar with pressure regulation or who require very quiet plumbing may want a professional to install and verify settings, since several users report a thumping noise during flow. Also, projects requiring non-NPT unions or sizes other than 2 in. should look for a different model.

Pros & Cons

Pros

• Reliable pressure control with a tamper-resistant lock to maintain setpoint.
• Easy, tool-free installation that grips pipe with stainless steel teeth and an O-ring seal.
• Durable, lead-free brass and stainless construction suitable for potable water.
• Adjustable 10 to 70 PSI range covers most residential and commercial needs.

Cons

• Some customers report a thumping noise when water runs, which may require investigation on site.
• Available as a 2 in. NPT union only, so those needing other connection styles must choose another model.

Specifications

Model	EB45 Pressure Regulating Valve
Connection	2 in. NPT Female x NPT Female, single union
Material	Brass, stainless steel and metallic components
Rated Pressure	60 PSI (adjustable 10 to 70 PSI)
Temperature	Suitable for hot and cold water to 180F
Design Feature	Half cartridge with tamper-resistant EB45 adjustment
Compliance	NSF/ANSI 372 compliant for potable water

Our Verdict

The Cash Acme EB45 regulator is a practical, well-built choice for professionals and informed homeowners who need a durable, tamper-resistant pressure reducer for 2 in. NPT systems. Its half cartridge access and tool-free installation deliver real time savings on install and service, and the adjustable 10 to 70 PSI range offers flexibility. It represents good value for plumbing applications where reliability matters, though the reported thumping noise may require attention in some installations.

Frequently Asked Questions

Is this valve suitable for potable water systems?
Yes. It is made from lead-free materials and is compliant with NSF/ANSI 372 for potable water use.

What pressure range can it be set to?
The valve is rated to 60 PSI and is adjustable between 10 and 70 PSI to match system requirements.

How easy is installation?
Installation is quick and tool-free: insert the pipe and stainless steel teeth plus the O-ring form a secure, leak-resistant seal.