King 7710 Series Stainless Rotameter

Fits higher-capacity liquid or air lines where you need an all-316L King 7710 metal-tube rotameter with optional 4–20 mA.

Key advantages

• All-316L tube — All-316L stainless steel tube variable-area rotameter (7710 Series)
• Capacity — water 33 GPH to 450 GPM; air 4 to 100 SCFM
• Accuracy / turndown — ±3% of full scale; 10:1; repeatability 1%
• Pressure — NPT fittings 1,500 psi; flange class per ASME rating/temperature
• Options — Optional 4–20 mA transmitter; single/dual inductive alarms; CRN; ISA RP 16.6 calibrations

Typical applications

• Higher-flow water or compatible liquid indication in metal-tube VA form.
• Air service up to 100 SCFM class on 7710 builds.
• Loops needing optional 4–20 mA transmitter or inductive alarms.

Selection guide

• Capacity — water 33 GPH to 450 GPM; air 4 to 100 SCFM
• Connections — NPT to 1,500 psi; flanges per ASME rating/temperature.
• Transmitter / alarms — optional 4–20 mA; single/dual inductive alarms.
• Scale — 120 mm direct-reading detachable scale
• Accuracy — ±3% of full scale

Common mistakes

• Assuming acrylic/polysulfone chemical compatibility — 7710 is all-316L metal tube.
• Ordering flanges without stating ASME class and facing.
• Forgetting CRN / ISA RP 16.6 calibration options if the site requires them.

When to RFQ / what to tell us

1. Media, target flow, NPT vs flange (class).
2. 4–20 mA / alarms / CRN needs; quantity; ship-to.

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Specs

Documents

• King Instrument 7710 Series Rotameter datasheet (PDF)
• King Instrument 7710 Series Rotameter manual (PDF)

FAQ

Q: Accuracy? A: ±3% of full scale; 10:1 turndown; 1% repeatability.

Q: Transmitter? A: Optional 4–20 mA — state on RFQ.

Q: What should I send for a quote? A: Media, flow, connection, options, quantity.

Links

• Request a Quote
• Get selection help
• Category