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Black steel low-pressure diaphragm gauge with bottom connection

Value Brand

Value Brand Low Pressure Diaphragm Gauge 2-1/2 In 0-5 psi

SKU CH-Z3BT-TP9CX

Measures low pressure up to 5 psi with a 2-1/2 inch steel case and 0.1 psi graduations

  • Product typeElectronic
  • Measures low pressure accurately with 0.1 psi graduations
  • Durable steel case resists wear in demanding environments
  • Bottom 1/4 in MNPT connection simplifies installation
  • No liquid filling reduces maintenance and leak risk
  • Accuracy within 1.50 percent ensures reliable readings

Application Scope

This low-pressure diaphragm gauge measures from 0 to 5 psi with a 0.1 psi smallest graduation. It suits technicians who need basic indication in pneumatic or hydraulic circuits where high precision is not required. Builders needing tighter tolerance or a certified calibration should select a different instrument.

Sustained Operation

The gauge is liquid-free and relies on a copper-alloy diaphragm to sense pressure continuously. Steel case construction resists ambient vibration and corrosion during extended service. Accuracy remains within +/- 1.50 percent of full scale under steady conditions. No power source is needed for operation.

Critical Specification

The primary range of 0 to 5 psi determines whether this gauge matches the system pressure being monitored. Connection is 1/4 in MNPT at the bottom of a 2-1/2 in steel case. California Proposition 65 warnings apply to materials used in this product.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 71% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameZORO SELECT
Product typeElectronic

Questions about this item

Does the 0-5 psi gauge with ±1.50% accuracy drift when mounted on a pump running continuously?

The diaphragm design and 0.1 psi graduation maintain the stated ±1.50% accuracy under steady low-pressure service; no liquid fill means no temperature-related fluid expansion.

What thread sealant or adapter do I need for the 1/4 in MNPT bottom connection?

The gauge has a 1/4 in male NPT bottom mount; apply PTFE tape or pipe dope to the threads and screw directly into a matching female NPT port — no extra adapter required.

Will the copper wetted parts resist corrosion if I keep using it on my older brass manifold?

Copper wetted parts are compatible with brass manifolds in non-corrosive media; avoid ammonia-based fluids to prevent dezincification of the brass.

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