Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

JB INDUSTRIES PR-300 Cover Assembly with Sight Glass and Drain Valve - Pneumatics
JB INDUSTRIESPneumatics

JB INDUSTRIES PR-300 Cover Assembly with Sight Glass and Drain Valve

JB INDUSTRIES Pneumatics. Specifications: Type: Cover Assembly.

SKU 3G-OTH-144834

Also listed as: PR300 · PR 300

Brand
JB INDUSTRIES
Item
PR-300 Cover Assembly with Sight Glass and Drain Valve
Category
Pneumatics
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

JB INDUSTRIES
Manufacturer Part Number
PR-300
Type
Cover Assembly

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

JB INDUSTRIES Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

JB INDUSTRIES Pneumatics. Specifications: Type: Cover Assembly.

Frequently Asked Questions

What is the JB INDUSTRIES PR-300 cover assembly used for?

The JB INDUSTRIES PR-300 cover assembly with sight glass and drain valve is used in pneumatic systems to provide access for maintenance and visual monitoring of fluid levels. It is commonly applied in industrial air compressors, filtration units, and fluid reservoirs where reliable sealing and drainage are required.

What are the specifications of the JB INDUSTRIES PR-300 cover assembly?

The JB INDUSTRIES PR-300 is a cover assembly that includes a sight glass and drain valve. Its manufacturer part number is PR-300, and it is classified as a pneumatics component. The assembly is designed for integration into fluid-handling systems requiring visual level indication and controlled drainage.

Where to buy the JB INDUSTRIES PR-300 cover assembly worldwide?

You can source the JB INDUSTRIES PR-300 cover assembly through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this pneumatic component.

How to install the JB INDUSTRIES PR-300 cover assembly?

To install the JB INDUSTRIES PR-300 cover assembly, first ensure the system is depressurized and drained. Align the gasket or O-ring (if applicable) with the mounting flange, then secure the cover using the appropriate bolts to the manufacturer's torque specification. Verify the sight glass is clean and the drain valve operates freely before pressurizing.

Used in

Common applications for JB INDUSTRIES
Refrigeration system servicing — JB INDUSTRIES analog pressure gauges (QC-G864) for monitoring low-side pressures
HVACR installation — JB INDUSTRIES capillary tubing (TC-36-12) for metering refrigerant in split systems
Commercial air-conditioning maintenance — JB INDUSTRIES saddle piercing valves (A32906) for adding access ports to copper lines
Evacuation and charging — JB INDUSTRIES valve core removers (CM-CRTOOL) for rapid core extraction during pump-down
Field service hose connections — JB INDUSTRIES low side charging hoses (CLS-60B) for connecting manifold gauges to systems
Flow control in service lines — JB INDUSTRIES mini ball valves (MBV5-03) for isolating sections during repair

JB INDUSTRIES Products

3G Electric supplies JB INDUSTRIES pneumatics. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Cover assembly for pneumatic filter or regulator housings, featuring an integrated sight glass for visual fluid level monitoring and a drain valve for moisture removal. Type: Cover Assembly; With Sight Glass And Drain Valve: PR-301
JB INDUSTRIES
Cover assembly for pneumatic filter or regulator housings, featuring an integrated sight glass for visual fluid level monitoring and a drain valve for moisture removal. Type: Cover Assembly; With Sight Glass And Drain Valve: PR-301
Pneumatic cover assembly designed to enclose and protect internal mechanisms in industrial air systems. Suitable for use in manufacturing, automation, and material handling equipment where sealing and contamination prevention are required
JB INDUSTRIES
Pneumatic cover assembly designed to enclose and protect internal mechanisms in industrial air systems. Suitable for use in manufacturing, automation, and material handling equipment where sealing and contamination prevention are required
The JB INDUSTRIES PR-1 is a pneumatic sight glass used for visual monitoring of fluid level, flow, or condition in compressed air and lubrication systems. It is suitable for industrial air compressors, hydraulic reservoirs, and similar equipment where oil or coolant observation is required
JB INDUSTRIES
The JB INDUSTRIES PR-1 is a pneumatic sight glass used for visual monitoring of fluid level, flow, or condition in compressed air and lubrication systems. It is suitable for industrial air compressors, hydraulic reservoirs, and similar equipment where oil or coolant observation is required
Manual drain valve for releasing condensate or pressure from compressed air systems, filters, and receivers. Suitable for use in industrial plants, machining lines, and HVAC applications
JB INDUSTRIES
Manual drain valve for releasing condensate or pressure from compressed air systems, filters, and receivers. Suitable for use in industrial plants, machining lines, and HVAC applications
Pneumatic seal assembly for use in valves and actuators in industrial air systems. Includes O-rings and cover seal to help maintain leak-free operation in manufacturing, automation, and process control applications
JB INDUSTRIES
Pneumatic seal assembly for use in valves and actuators in industrial air systems. Includes O-rings and cover seal to help maintain leak-free operation in manufacturing, automation, and process control applications
The PR-304 cartridge is a pneumatic component designed for use in industrial air systems. It includes rings and a cover seal to help maintain pressure regulation and seal integrity in pneumatic equipment
JB INDUSTRIES
The PR-304 cartridge is a pneumatic component designed for use in industrial air systems. It includes rings and a cover seal to help maintain pressure regulation and seal integrity in pneumatic equipment

More from JB INDUSTRIES

View all JB INDUSTRIES parts
The PR-18 cartridge valve repair kit contains seals and internal components for servicing and rebuilding pneumatic cartridge valves. It is used in industrial systems to restore valve function and minimize downtime in manufacturing, material handling, and process control applications
JB INDUSTRIES
The PR-18 cartridge valve repair kit contains seals and internal components for servicing and rebuilding pneumatic cartridge valves. It is used in industrial systems to restore valve function and minimize downtime in manufacturing, material handling, and process control applications
Replaceable cartridge assembly for pneumatic systems, including O-rings and cover seal. Used in air preparation units, regulators, and lubricators to maintain sealing integrity and prevent contamination
JB INDUSTRIES
Replaceable cartridge assembly for pneumatic systems, including O-rings and cover seal. Used in air preparation units, regulators, and lubricators to maintain sealing integrity and prevent contamination
JB INDUSTRIES
JB INDUSTRIES
The PR-52 cartridge valve repair kit is used to rebuild and restore sealing performance in pneumatic cartridge valves. It contains seals and components necessary for valve repair, helping to prevent air leaks and maintain system pressure in industrial automation, packaging, and material handling systems
Gas ballast valve with O-ring for use in vacuum pump systems. Introduces a controlled amount of gas into the pump chamber to reduce oil contamination and maintain pump efficiency. Suitable for pneumatic equipment in industrial and HVAC applications
JB INDUSTRIES
Gas ballast valve with O-ring for use in vacuum pump systems. Introduces a controlled amount of gas into the pump chamber to reduce oil contamination and maintain pump efficiency. Suitable for pneumatic equipment in industrial and HVAC applications
Plastic isolation valve handle with screw for manual operation of pneumatic isolation valves. Provides a non-conductive grip for opening or closing valves in pneumatic systems. Suitable for use as a replacement handle on compatible valve bodies
JB INDUSTRIES
Plastic isolation valve handle with screw for manual operation of pneumatic isolation valves. Provides a non-conductive grip for opening or closing valves in pneumatic systems. Suitable for use as a replacement handle on compatible valve bodies
Pneumatic cartridge designed for use in industrial air systems to regulate or control flow. Commonly applied in manufacturing, automation, and material handling equipment requiring reliable pneumatic performance
JB INDUSTRIES
Pneumatic cartridge designed for use in industrial air systems to regulate or control flow. Commonly applied in manufacturing, automation, and material handling equipment requiring reliable pneumatic performance
Pump repair kit for rebuilding and restoring performance in pneumatic pumps and vacuum pumps. Includes components to replace worn seals, gaskets, and valves, extending equipment life without full pump replacement. Commonly used in HVAC, refrigeration, and industrial maintenance applications
JB INDUSTRIES
Pump repair kit for rebuilding and restoring performance in pneumatic pumps and vacuum pumps. Includes components to replace worn seals, gaskets, and valves, extending equipment life without full pump replacement. Commonly used in HVAC, refrigeration, and industrial maintenance applications
Rubber foot with integrated screw for vibration-dampening support of pneumatic equipment and industrial machinery. Reduces noise and prevents slippage on hard surfaces. Suitable for installation and maintenance in workshops and manufacturing plants
JB INDUSTRIES
Rubber foot with integrated screw for vibration-dampening support of pneumatic equipment and industrial machinery. Reduces noise and prevents slippage on hard surfaces. Suitable for installation and maintenance in workshops and manufacturing plants