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Product Introduction

Precision instrumentation engineered for commercial coffee boiler pressure indicator applications

The Commercial Coffee Boiler Pressure Indicator is aimed at multi-group commercial espresso machines used in cafés, hotels, and roasteries, where technicians and baristas need more information than a small single-purpose steam gauge provides. A 63mm dial with two pointers shows boiler steam pressure and pump line pressure together, so one glance tells staff whether the boiler is holding its set point and whether the pump is delivering enough pressure to the group heads.

Commercial boilers are typically subject to pressure equipment regulations, and inspectors or service engineers look for a clearly marked safe working limit. This indicator prints a red line at the boiler's certified maximum working pressure and a shaded operating band below it, making it obvious in seconds whether the machine is running inside or outside its intended envelope. Custom markings can match the specific boiler certificate of each machine model.

The 316L stainless steel Bourdon tubes and brass movement are selected for long duty on hot, mineral-bearing water, and the dial is built with a raised bezel and anti-fog window to remain legible near steam wands and hot surfaces. Assembly is performed in our 100,000-level clean workshop, where both movements are calibrated independently and then checked together for pointer clearance so the two needles never rub or obscure one another.

Every indicator is recorded in our Advanced MES digital tracking system, including the boiler pressure limit marked on the dial, so machine manufacturers can show inspectors a documented link between the gauge on the machine and the certification of the boiler it serves. A separate service version is available for replacing worn gauges on older commercial machines.

Core Advantages

Engineered for reliability where it matters most

63mm

Readable Dial for Busy Bars

Dual Pointer

Boiler + Pump Pressure

Red Line

Certified Safe Limit Marked

Two Pressures, One Dial — Boiler steam and pump line pressure are read together, speeding daily opening and troubleshooting checks
Safe Limit Marked in Red — A printed red line at certified working pressure supports quick compliance and inspection checks
Anti-Fog Window — Window treatment keeps the dial legible beside steam wands and hot machine surfaces
Independently Calibrated Movements — Both pointers are calibrated separately, then checked for clearance so needles never rub or hide each other
Certificate-Matched Printing — Custom dial markings follow each machine model's boiler certification values
MES Traced Production — Serial-linked quality data from raw material to shipment for full after-sale traceability

Specifications

Standard technical parameters

Dial Size	63mm (2.5") with raised bezel
Accuracy Class	Class 1.6 Full Scale
Boiler Scale	0-2.5 Bar with red line at certified limit
Pump Scale	0-16 Bar
Bourdon Tubes	316L Stainless Steel (boiler side), Brass (pump side)
Connection	Two 1/8" NPT Bottom Entry Ports
Case Material	Chrome-Plated Brass or 304 Stainless Steel
Window	Anti-Fog Polycarbonate
Operating Ambient	Up to +80°C near machine panel
Dial Print	Operating Band, Safety Red Line, Logo

Technical Summary

Order & production details

MOQ	400 Pieces (Standard Range Models)
Lead Time	22-28 Days (dual-movement calibration)
Packaging	Individual boxes with port caps and dial protective film
Certifications	ISO9001:2015, CE, RoHS Compliant
Raw Materials	316L SS, H59 Brass, Anti-Fog Polycarbonate
Customization	Red-line value, pump range, case finish, branding
Port of Export	Ningbo / Shanghai
Payment Terms	T/T, L/C at Sight, Western Union

Our Partners

Trusted by leading brands worldwide

Industrial Applications

Where commercial coffee boiler pressure indicator performance is mission-critical

Multi-Group Café Espresso Machines

Primary indicator on two, three, and four group machines running through long service shifts

Hotel and Catering Coffee Stations

Shows boiler status on machines operated by rotating staff who need a fast, unambiguous reading

Roastery Cupping and Training Labs

Helps trainers demonstrate the relationship between boiler and pump pressure

Machine Service and Refurbishment

Standard replacement for worn or mismatched gauges on older commercial machines

Espresso Machine OEM Build Lines

Fitted by manufacturers as the certified pressure indicator on commercial models

Technical Highlights & QC

Every unit validated for zero-defect performance

Independent Pointer Calibration: Boiler and pump movements are calibrated separately against certified references across their full scales.
Pointer Clearance Check: Both needles are rotated through full travel to confirm they never rub, collide, or obscure each other.
Red-Line Position Verification: The printed safety line is checked against the calibrated pressure to confirm it lands on the certified value.
Steam Exposure Test: Sample units are exposed to steam and heat cycles to confirm the anti-fog window and seals remain clear and tight.
Hot Water Mineral Exposure: Wetted parts are checked for resistance to scale and mineral deposits from commercial water supplies.
MES Serial Tracking: Red-line value, both ranges, and calibration data are stored digitally against each unit's serial number.

Environment & Media Compatibility

Engineered for demanding operating environments

Steam Wand Proximity: Anti-fog window and heat-rated seals keep the dial legible next to active steam wands.
Long Café Service Shifts: Movements are built for continuous daily use through 10-16 hour opening periods.
Hard Water Scale: Stainless boiler-side tube resists the mineral deposits that form in commercial boilers.
Pump Pulsation: Pump-side movement tolerates the pulsation of rotary vane and vibratory pumps.
Kitchen Cleaning Chemicals: Chrome and stainless finishes withstand daily degreasing and wipe-down.
Front Panel Heat: Case materials tolerate radiant heat from the boiler and group heads behind the panel.

Pro Tips for Longevity

Installation & maintenance best practices

Confirm the Certified Limit: Check the boiler data plate and order the dial with the exact red-line value for that model.
Compare Both Pointers at Opening: Read boiler and pump pressure at start-up each day so slow drifts are noticed early.
Replace, Don't Reset, a Drifting Gauge: If the boiler reading disagrees with the safety valve behavior, replace the gauge and have the boiler inspected.
Keep Ports Clear: Descale the pressure tappings during scheduled boiler service to prevent blocked ports.
Use the Correct Ports: Connect boiler and pump lines to their labeled ports; reversing them gives a misleading reading.
Protect from Impact: Mount where portafilters and cleaning tools cannot strike the bezel.

Payment & Logistics

Reliable global supply chain from factory to your site

Flexible Payment Terms: We support T/T (30% deposit, balance before shipment), L/C at sight for large orders, and secure B2B trade assurance platforms for new customers.
Global Freight Options: Sea freight from Ningbo or Shanghai for bulk orders; DHL, FedEx, or UPS air express for urgent sample and small-batch shipments.
Certified-Dial Packaging: Each indicator ships with port caps, a protective dial film, and a label showing the marked safe working pressure.
Full Export Documentation: Commercial invoice, packing list, certificate of origin (CO), calibration certificate, and CE declaration of conformity provided with every shipment.
Sample Lead Time: Standard range samples are available in 10-12 working days because of the dual-movement calibration.
After-Sales Support: Our technical team provides boiler certificate matching and panel cut-out drawings for your machine documentation.

About Us

Zhoushan Jiaerling Meter Co., Ltd. — 20 years of precision manufacturing

Zhoushan Jiaerling Meter Co., Ltd. was established in 2004. It is China Commercial Coffee Boiler Pressure Indicator Manufacturers and Wholesale Commercial Coffee Boiler Pressure Indicator Factory, which is a high-tech enterprise integrating design, research and development, manufacturing, import and export trade.

The company is located in Zhoushan City, Zhejiang Province, covering an area of 15,000 square meters, equipped with a 100,000-level clean workshop, conventional production and assembly workshop, automated production workshop, new laboratory and comprehensive office building.

After more than 20 years of hard work and development, the company has a stable design and development, production team, and advanced production and testing equipment. The company specializes in the production of various types of pressure gauges with complete specifications, and the annual output of pressure gauges reaches 6 million. In order to further develop, the company not only seeks improvement in technology, but also pays more attention to product quality and after-sales service. The company's purpose is to "regard quality as life, survive by reputation, promote development by technology, and serve customers with high-quality brands". The products are sold all over the world and are well received by domestic and foreign customers.

In 2019, the company participated in the compilation of the standard T/CECS10012-2019 "Gas Heating Hot Water Boiler and Water Heater Water Circuit Components" of the China Engineering Construction Standardization Association.

Under the implementation of modern and digital enterprise management, the company has successfully introduced the advanced MES system in 2023, and the order process is fully visualized to track data, ensuring the continuity of production and improving production efficiency.

The company will continue to adhere to the principles of excellence, accuracy, reliability, continuous improvement, and meeting customer needs, hoping to share harmony and prosperity with friends across the country.

Honor

Certifications and proprietary achievements

High-Tech Enterprise

Proprietary

Frequently Asked Questions

Everything you need to know before specifying or ordering

Why show pump pressure on the same dial?

It lets technicians confirm the pump is supplying enough pressure while checking the boiler, halving the number of readings needed.

What does the red line represent?

It marks the boiler's certified maximum working pressure so staff and inspectors can see the limit at a glance.

Can the red line be set to my boiler's certificate value?

Yes, custom dial printing matches the marked limit to each machine model's boiler certification.

Is the gauge suitable for steam wands and hot panels?

Yes, the anti-fog window and heat-rated seals are chosen for that environment.

What is the difference from a standard espresso steam gauge?

This is a larger dual-pointer unit designed for multi-group commercial machines and compliance-minded operators.

Are both pointers calibrated?

Yes, each movement is calibrated independently before being checked together.

Can it replace a single-pointer gauge?

It can if the panel cut-out and port layout match; send us your existing dimensions.

What accuracy should I expect?

Class 1.6 across the full scale on both movements.

Can I get a certificate?

A calibration certificate is available as an option.

Is stainless steel needed for the boiler side?

316L is recommended for commercial water to resist mineral attack and give a long service life.