US Gauge P-733 / P-734 Low Pressure Gauge

Fits low positive/negative pressure indication where you need a US Gauge P-733/P-734 2½-inch diaphragm gauge below ~10–15 psi class.

Key advantages

• Low-pressure diaphragm — Low-pressure diaphragm gauge (P-733 / P-734)
• Ranges — 0–15…0–200 inH2O; 0–20/32/36 oz; 0–5/10 psi; dual 0–20 oz / 35 inH2O available
• Accuracy — ±3-2-3% of span (ASME Grade B style)
• Mounts — P-733 1/4-18 NPT center-back mount; P-734 1/4-18 NPT lower mount
• Sensing — High-sensitivity diaphragm for pressures below ~10–15 psi

Typical applications

• Low inH2O / oz / low-psi indication on clean dry gases.
• Center-back (P-733) or lower-mount (P-734) panel/pipe installs.
• Duties where bourdon gauges lack sensitivity below ~10–15 psi.

Selection guide

• P-733 vs P-734 — center-back vs lower mount.
• Range — 0–15…0–200 inH2O; 0–20/32/36 oz; 0–5/10 psi; dual 0–20 oz / 35 inH2O available
• Media — Clean dry gases / compatible low-pressure media per datasheet
• Accuracy — ±3-2-3% of span (ASME Grade B style)

Common mistakes

• Using a bourdon gauge for inches-of-water spans that need a diaphragm capsule.
• Ordering P-733 when the pipe needs lower mount P-734.
• Applying to liquids outside the clean-dry-gas / compatible-media guidance.

When to RFQ / what to tell us

1. Range/units; P-733 vs P-734 mount.
2. Media; quantity; ship-to.

Request a Quote · Get selection help

Specs

Documents

• US Gauge P-733 / P-734 datasheet (PDF)

FAQ

Q: Accuracy? A: ±3-2-3% of span (ASME Grade B style).

Q: P-733 vs P-734? A: P-733 center-back 1/4-18 NPT; P-734 lower mount 1/4-18 NPT.

Q: What should I send for a quote? A: Range, mount, media, quantity.

Links

• Request a Quote
• Get selection help
• Category