Boshart PG45 No-Lead Liquid-Fi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6.89
Boshart PG45 No-Lead Liquid-Filled Pressure Gauge, 0-160 PSI

Boshart PG45 No-Lead Liquid-Filled Pressure Gauge, 0-160 PSI

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Model: PG-100-GNL

In Stock (leaves warehouse same day if ordered before 3pm ET)

$6.89
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Boshart PG45 No-Lead Liquid-Filled Pressure Gauge, 0-160 PSI

The Boshart PG45 is a no-lead, liquid-filled pressure gauge built for general-purpose water system pressure monitoring on the job site. It features a 0-160 PSI reading range and a lower-mount (LM) connection, making it a straightforward drop-in gauge for well systems, pump stations, hydronic loops, and other residential or commercial water lines where accurate, easy-to-read pressure feedback is needed at the point of connection. This gauge is available with a 2" or 4" dial face, so installers can match the gauge to the readability and panel-space requirements of the job while every size shares the same 0-160 PSI range, liquid-filled case, lower-mount connection, and no-lead construction. The gauge body is liquid-filled, which dampens needle vibration from pump cycling and pressure surges so plumbers and pump installers get a steadier, more reliable reading over the life of the installation compared to a dry-case gauge. As a no-lead component, the PG45 is manufactured to reduce lead content in the wetted pathway, an important consideration for potable water applications where every fitting and gauge in the line matters. Boshart notes that this gauge is general purpose and is NOT rated for use with oxygen service — installers should route oxygen or other incompatible gas lines to a gauge specifically rated for that media. The PG45 ships in cartons of 20 pieces per size, making it a practical stocking item for plumbing wholesalers, pump contractors, and service trucks that regularly replace or install pressure gauges on residential and light commercial water systems.

Key Features

  • Pressure Range: 0-160 PSI reading scale, suited to typical residential and light commercial water system pressures.
  • Dial Size Options: Available in 2" and 4" dial faces to fit different panel and readability needs across the PG45 family.
  • Liquid-Filled Case: The liquid fill dampens vibration and pulsation from pump cycling, extending gauge life and improving readability.
  • Lower Mount Connection: LM (lower mount) configuration threads directly into the line for a simple, in-line installation.
  • No-Lead Construction: Manufactured to reduce lead content for use in potable water plumbing applications.
  • General Purpose Use Only: Not designed or rated for use with oxygen service; select an oxygen-rated gauge for that application.
  • Bulk Packaging: Packaged 20 pieces per carton, ideal for distributors and contractors who stock replacement gauges.

Technical Specifications

  • Country of Origin: China
  • Prop 65 Warning: Lead

Typical Applications

  • Residential Well and Pump System Pressure Monitoring
  • Water Distribution and Pressure Tank Installations
  • Hydronic and Closed-Loop Water System Monitoring
  • Plumbing Contractor Service and Repair Trucks
  • Rough-In and Retrofit Pressure Gauge Replacement

Why Boshart?

Boshart builds the PG45 as a no-lead, liquid-filled gauge specifically for reliable, everyday pressure monitoring on potable water and general plumbing lines. The liquid-filled design and lower-mount connection give installers a durable, easy-to-read gauge that holds up to the vibration and cycling common in pump and pressure tank systems, and the 2" and 4" dial size options let wholesalers stock the right fit for every job while the no-lead construction supports use in potable water applications. Stocked in cartons of 20 pieces per size, it's a dependable choice for plumbing wholesalers and contractors who need a straightforward, general-purpose gauge on hand.

Manufacturer Resources

Product Specs

Prop 65 Warning:
Lead
list_batch:
BOS-20260923
Product Type:
Pressure Gauge
Connection Type:
Lower Mount
Department:
Plumbing
Product Subgroup:
Testing Products
Product Group:
Plumbing Tools

Boshart PG-100-GNL – Frequently Asked Questions

1) Is the Boshart PG45 pressure gauge OK for potable water lines?
Yes. The PG45 is built as a no-lead gauge, manufactured to reduce lead content in the wetted path, which is why it gets specified on potable water systems where every fitting in the line counts. Note it does carry a Prop 65 lead warning, so if your jurisdiction requires that disclosure on installed components, you'll see it on the carton.
2) Should I pick the 2 inch or the 4 inch dial on the Boshart PG45?
Both dial sizes are the same gauge otherwise: 0-160 PSI, liquid-filled case, lower mount connection, no-lead. Pick on readability and space. The 2 inch (MPN PG-100-GNL) is the usual choice threaded straight into a pressure tank tee or a tight pump enclosure. The 4 inch (MPN PG40-160-GNL) is the one to use when the gauge has to be read from across a mechanical room or mounted on a panel face.
3) Is 0-160 PSI the right range for a residential well and pressure tank?
Yes for typical residential and light commercial water pressures. The PG45 reads 0-160 PSI, which covers standard 30/50 and 40/60 pump switch settings with plenty of headroom for surge, while still keeping the working pressure in a readable part of the dial.
4) Can I use the Boshart PG45 on an oxygen line or medical gas?
No. Boshart lists the PG45 as general purpose only and specifically not rated for oxygen service. Oxygen and other reactive gas lines need a gauge rated and cleaned for that media. Use the PG45 on water systems only.
5) What does lower mount mean on this gauge, and how does it install?
Lower mount (LM) means the threaded connection comes out of the bottom of the case, so the gauge threads directly into a tee, tank tee, or gauge port with the dial facing you. That's the standard in-line arrangement on pump and pressure tank work. If your port requires the connection coming out the back of the case, a back-mount gauge is what you need instead.
6) Why a liquid-filled gauge instead of a dry gauge on a pump system?
Pump cycling and pressure surges hammer a dry gauge needle, and the movement wears out. The liquid fill in the PG45 case dampens that vibration and pulsation, so the needle settles and stays readable over the life of the install. On a well pump, booster pump, or anything with a pressure switch cycling regularly, liquid-filled is the better call. A dry case is only worth considering on a static line with no pulsation.
7) Which Boshart part number do I order to replace a 4 inch 0-160 PSI liquid-filled well gauge?
PG40-160-GNL is the 4 inch dial version, 0-160 PSI, liquid-filled, lower mount, no-lead. For a 2 inch dial replacement in the same configuration, order PG-100-GNL.
8) How is the Boshart PG45 packaged for stocking on a service truck or wholesale shelf?
It ships 20 pieces per carton, per dial size. That's the practical stocking quantity for plumbing wholesalers, pump contractors, and service trucks that replace gauges routinely. If you carry both dial sizes, the 2 inch is PG-100-GNL and the 4 inch is PG40-160-GNL.
9) What applications is the Boshart PG45 gauge intended for?
Water system pressure monitoring: residential well and pump systems, water distribution and pressure tank installs, hydronic and closed-loop monitoring, and rough-in or retrofit gauge replacement. It's a general-purpose water gauge, not an instrument-grade or process gauge, and not for gas service.
How fast can I get the Boshart PG-100-GNL delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Boshart PG-100-GNL come with a warranty?
Absolutely. The Boshart PG-100-GNL is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Boshart PG-100-GNL?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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