Super-Pro 2.5" Liquid-Filled Vacuum Gauge, 0–30 inHg | 89030BU
The Super-Pro 89030BU Liquid-Filled Vacuum Gauge is designed for measuring vacuum levels in compatible swimming pool and spa suction-side plumbing systems.
Featuring a 2.5-inch dial, 0–30 inHg vacuum range, and 1/4-inch bottom-mounted connection, this gauge provides a convenient way to monitor suction conditions and troubleshoot pool circulation equipment.
Its liquid-filled construction helps dampen needle movement caused by vibration and pressure fluctuations, making it a practical choice for pool service professionals and maintenance technicians.
Product Features
- Liquid-Filled Design: Helps reduce pointer vibration for easier readings.
- 2.5-Inch Dial: Provides an easy-to-read analog display.
- 0–30 inHg Vacuum Range: Measures suction pressure below atmospheric pressure.
- 1/4-Inch Bottom Connection: Designed for compatible threaded vacuum testing ports.
- Pool Pump Diagnostics: Useful for evaluating suction-side operating conditions.
- Professional Service Tool: Suitable for residential and commercial pool maintenance.
- Individual Gauge: Sold as one complete vacuum gauge.
Product Specifications
- Manufacturer: Super-Pro
- Manufacturer Part Number: 89030BU
- Distributor Part Number: SPG-06-4001
- Product Type: Liquid-Filled Vacuum Gauge
- Dial Diameter: 2.5 Inches
- Measurement Range: 0–30 inHg
- Connection Size: 1/4 Inch
- Mounting Orientation: Bottom Mount
- Application: Pool and Spa Suction-Side Testing
- Approximate Product Weight: 0.45 lb
- UPC: 729360041453
- Package Quantity: 1 Vacuum Gauge
What Does a Vacuum Gauge Measure?
A vacuum gauge measures pressure below atmospheric pressure, commonly referred to as suction or vacuum.
In swimming pool circulation systems, vacuum readings can help technicians evaluate conditions on the suction side of the pump.
Changes in readings may indicate restrictions or other operating conditions affecting water flow.
Common Applications
- Swimming Pool Pump Suction Diagnostics
- Pool and Spa Circulation System Testing
- Suction-Side Plumbing Troubleshooting
- Monitoring Vacuum Levels
- Evaluating Potential Flow Restrictions
- Professional Pool Equipment Maintenance
Liquid-Filled vs. Dry Vacuum Gauges
The Super-Pro 89030BU uses a liquid-filled construction that helps stabilize the gauge needle when equipment vibration or pressure fluctuations occur.
This can make readings easier to observe compared with a conventional dry gauge under similar operating conditions.
Vacuum Gauge vs. Pressure Gauge
Vacuum gauges and positive-pressure gauges measure different operating conditions.
- Super-Pro 89030BU: Liquid-filled vacuum gauge measuring 0–30 inHg.
- Super-Pro 86030BU: Dry steel vacuum gauge measuring 0–30 inHg with a smaller 2-inch dial.
- Super-Pro 81060BU: Positive-pressure gauge measuring 0–60 PSI for compatible pressure-side applications.
Compatibility: This is a vacuum gauge, not a standard pool filter pressure gauge. Verify the measurement range and mounting requirements before ordering.
Related Pool Equipment Gauges
Find additional pool equipment testing and maintenance products at Aqua Pool Supply.
- Super-Pro 86030BU – 2" Steel Vacuum Gauge, 0–30 inHg – Dry vacuum gauge with a 1/4-inch bottom connection.
- Super-Pro 81060BU – 0–60 PSI Pressure Gauge – Search for a positive-pressure gauge for compatible pool equipment.
- Super-Pro 89130BU – Combination Vacuum and Pressure Gauge – Search for a gauge with both vacuum and positive-pressure scales.
Installation and Maintenance
- Turn off the pool pump before installing or removing the gauge.
- Relieve system pressure before disconnecting any fittings.
- Verify the 1/4-inch connection matches the testing port.
- Use an appropriate thread-sealing method for the installation.
- Avoid overtightening the gauge connection.
- Follow any manufacturer instructions for venting a liquid-filled gauge.
- Inspect for leaks after installation.
- Replace the gauge if it leaks, becomes damaged, or produces unreliable readings.
Package Contents
Includes: One (1) Super-Pro 89030BU Liquid-Filled Vacuum Gauge with 2.5-inch dial, 0–30 inHg measuring range, and 1/4-inch bottom connection.
Not Included: Plumbing adapters, hoses, valves, or additional testing equipment.
Selling Quantity: One individual vacuum gauge.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.



