Vacuum Pressure Bulb Heathrow Scientific HEA20631B 85mL Rubber

Description

Product Overview

The Heathrow Scientific HEA20631B vacuum pressure bulb is engineered as a reliable component for laboratory gas handling, offering an 85 mL capacity within a sturdy rubber heavy‑wall construction. Designed to meet the rigorous demands of research and quality‑control environments, the bulb provides a leak‑tight seal through two integrated rubber valves equipped with standard PVC connections, allowing seamless integration with existing gas lines and manifolds. The choice of rubber as the primary material ensures chemical resistance to a broad range of gases, while the heavy‑wall design adds durability against accidental impacts and pressure fluctuations. With dimensions of 9.64 × 2.4 × 2.4 inches and a lightweight profile of just 2.47 ounces, the bulb is easy to handle, transport, and store without sacrificing robustness. The product does not include tubing, giving users the flexibility to select compatible tubing that best fits their specific experimental setup.

The heavy‑wall rubber bulb delivers consistent performance across a wide temperature range, maintaining its shape and sealing capability from near‑freezing conditions up to elevated laboratory temperatures. Its 85 mL internal volume is ideal for both small‑scale sampling and medium‑scale gas transfer tasks, providing enough space to capture representative gas samples without excessive dilution. The dual‑valve configuration enables users to draw gas from a source through one valve while simultaneously delivering it to a downstream apparatus through the other, simplifying complex experimental procedures and reducing the need for additional connectors. Because the valves are constructed from chemically inert rubber, they resist degradation when exposed to corrosive or reactive gases such as ammonia, carbon dioxide, or volatile organic compounds, extending the service life of the bulb and minimizing maintenance costs. The PVC fittings conform to standard laboratory tubing dimensions, ensuring quick and secure attachment to common tubing sizes ranging from 1/8 inch to 1/4 inch outer diameter.

The HEA20631B bulb finds extensive use in analytical chemistry, environmental monitoring, and process control laboratories where accurate gas measurement and transfer are critical. In gas chromatography sample preparation, the bulb can be employed to collect headspace gases from sealed vials, allowing precise injection into the chromatograph without contaminating the instrument. Environmental scientists use the bulb to sample atmospheric gases, soil emissions, or landfill vent streams, taking advantage of its robust construction to withstand field conditions. In industrial process labs, the bulb serves as a convenient reservoir for inert gases such as nitrogen or argon, facilitating purge cycles, pressure testing, and equipment calibration. Its compatibility with standard PVC tubing also makes it suitable for integration into custom gas manifolds, multi‑port distribution systems, and automated sampling rigs, providing a versatile solution for a broad spectrum of gas handling tasks.

Heathrow Scientific adheres to strict quality control protocols throughout the manufacturing of the HEA20631B bulb, employing precision molding techniques and rigorous inspection procedures to guarantee dimensional accuracy and material integrity. Each bulb undergoes a series of leak tests using calibrated pressure differentials to confirm the reliability of the rubber valves and the seal of the PVC connections. The company also subjects the finished product to accelerated aging simulations, exposing the rubber to temperature cycling and chemical exposure to verify long‑term performance. These comprehensive validation steps are documented and traceable, providing customers with confidence that the bulb meets industry standards for gas handling equipment. In addition, Heathrow Scientific offers a responsive technical support team that can assist users with installation guidance, troubleshooting, and recommendations for optimal tubing configurations.

The rubber material used in the HEA20631B bulb is free from hazardous additives such as phthalates and heavy metals, aligning with safety regulations for laboratory equipment and reducing the risk of contaminating sensitive analytical samples. Its chemical inertness also minimizes the potential for off‑gassing, which can interfere with trace‑level detection in mass spectrometry or infrared spectroscopy applications. Users appreciate the bulb’s low weight, which reduces the physical strain during repetitive sampling cycles, while the ergonomic shape of the bulb facilitates a comfortable grip and precise positioning. The product’s compliance with ASTM standards for pressure vessels ensures that it can safely withstand the typical pressure ranges encountered in most laboratory gas handling procedures, typically up to 30 psi without deformation.

Although the HEA20631B is supplied without tubing, Heathrow Scientific provides a range of compatible accessories that can be paired with the bulb to create a complete gas handling system. Options include stainless‑steel tubing, flexible PTFE hoses, and quick‑connect adapters that match the standard PVC ports. Customers can also order custom‑cut tubing lengths to fit specific bench layouts, ensuring a tidy and efficient workflow. The modular nature of the system allows laboratories to expand their capabilities by adding additional bulbs or integrating the unit into larger manifold assemblies, supporting scalable operations as research demands evolve. By continuously refining the design based on real‑world usage, the company aims to maintain its position as a trusted supplier of dependable gas handling solutions for laboratories worldwide.

Heathrow Scientific stands behind the HEA20631B with a comprehensive warranty that covers manufacturing defects for a period of one year from the date of purchase. Should any issue arise, customers can contact the dedicated support line to receive prompt assistance, including troubleshooting steps, replacement parts, or a full unit exchange if necessary. The company maintains an extensive online knowledge base featuring installation videos, detailed schematics, and FAQs that help users maximize the performance of their gas handling equipment. This commitment to after‑sales service reinforces the reliability of the product and gives laboratories confidence that their investment will deliver consistent results over the long term.

The HEA20631B complies with international standards for laboratory gas handling devices, including ISO 9001 certified manufacturing processes and CE marking for safety and environmental conformity. Its design adheres to the guidelines set forth by the American Society of Mechanical Engineers (ASME) for pressure vessels, ensuring that the bulb can safely operate under the typical pressure ranges encountered in research laboratories. Additionally, the product has been evaluated for compatibility with a variety of gases, confirming that it does not react adversely with common laboratory gases such as nitrogen, oxygen, carbon dioxide, and hydrogen sulfide. This broad compatibility makes the bulb a versatile choice for multidisciplinary research teams.

In academic teaching labs, the HEA20631B serves as an excellent demonstration tool for illustrating principles of gas collection, pressure measurement, and fluid dynamics. Instructors can use the bulb to show students how to safely capture gases generated during chemical reactions, transfer them to analytical instruments, or perform simple pressure‑based experiments. The clear rubber construction allows learners to visually observe the movement of gas within the bulb, reinforcing theoretical concepts with hands‑on experience. Because the bulb is inexpensive and easy to replace, it is well suited for high‑turnover educational settings where equipment may be frequently handled by students of varying skill levels.

Looking ahead, Heathrow Scientific plans to expand the HEA206B series with additional capacity options and alternative valve materials to accommodate emerging needs in high‑purity gas applications. Feedback from current users has driven the development of a version featuring stainless‑steel valve bodies for enhanced chemical resistance, as well as a larger 150 mL model for processes requiring greater sample volumes. By continuously refining the design based on real‑world usage, the company aims to maintain its position as a trusted supplier of dependable gas handling solutions for laboratories worldwide.

Detailed specifications for the HEA20631B are provided to assist engineers and procurement specialists in evaluating the product against project requirements. The external dimensions measure 9.64 inches in length, 2.4 inches in width, and 2.4 inches in height, resulting in a compact footprint that fits easily on standard laboratory benches. The internal volume of 85 mL is calibrated to a tolerance of ±0.5 mL, ensuring repeatable sample sizes across multiple uses. The bulb weighs only 2.47 ounces (70 grams), which reduces the load on pneumatic systems and simplifies manual handling. Constructed from a high‑grade synthetic rubber, the material exhibits a Shore A hardness of 70, providing a balance between flexibility for valve operation and rigidity for pressure resistance. The PVC ports are sized to accept 1/8 inch (3.2 mm) and 1/4 inch (6.4 mm) tubing, with a standard 1/8‑inch male thread that conforms to ISO 8434‑1. The maximum working pressure is rated at 30 psi (2.07 bar), with a burst pressure exceeding 60 psi, offering a safety factor of two. All dimensions are listed in both metric and imperial units to facilitate global sourcing.

Compared with competing vacuum bulbs on the market, the HEA20631B distinguishes itself through a combination of material quality, valve design, and cost efficiency. Many lower‑priced alternatives employ thin‑walled plastic containers that are prone to cracking under repeated pressure cycles, whereas the heavy‑wall rubber construction of the HEA20631B provides superior resilience and a longer service life. Some competitors offer only a single valve, limiting flexibility in bidirectional gas flow, while the dual‑valve configuration of this model enables simultaneous inlet and outlet operations without the need for additional adapters. In terms of price‑to‑performance ratio, the HEA20631B is competitively priced at $15.30, delivering features typically found in higher‑priced units such as chemical resistance and robust sealing. Users who prioritize reliability and ease of integration will find the HEA20631B a more advantageous choice than generic plastic bulbs that lack standardized PVC connections.

To achieve optimal results when using the HEA20631B, follow this step‑by‑step procedure. Begin by inspecting the bulb for any visible damage or debris; clean the exterior with a lint‑free cloth if necessary. Attach the appropriate PVC tubing to each valve, ensuring a snug fit that prevents leaks. Secure the tubing using a hose clamp or a quick‑connect fitting if preferred. Open the inlet valve slowly to allow the desired gas to fill the bulb, monitoring the pressure gauge on the source to avoid exceeding the 30 psi limit. Once the target volume is reached, close the inlet valve and open the outlet valve to transfer the gas to the downstream apparatus. If the downstream system requires a different pressure, adjust the outlet valve accordingly to regulate flow. After the transfer is complete, close both valves, detach the tubing, and store the bulb in a clean, dry environment. For repeated cycles, repeat the inspection and cleaning steps to maintain performance consistency.

Regular maintenance of the HEA20631B extends its functional lifespan and ensures consistent performance. After each use, flush the interior of the bulb with an inert gas such as nitrogen to remove residual reactive species that could cause corrosion over time. For thorough cleaning, immerse the bulb in a mild detergent solution and gently agitate to dislodge any contaminants adhering to the rubber surface. Rinse the bulb with deionized water and allow it to air‑dry completely before the next operation. Inspect the rubber valves periodically for signs of wear, cracking, or hardening; replace the bulb if any degradation is observed, as valve integrity is critical for maintaining a leak‑free system. Store the bulb away from direct sunlight and extreme temperatures to prevent material degradation. By adhering to these simple maintenance practices, laboratories can rely on the bulb for many months of dependable service.

Safety is paramount when handling pressurized gases, and the HEA20631B incorporates several features to mitigate risk. Always verify that the source pressure does not exceed the bulb’s maximum rating of 30 psi, and never operate the bulb in an environment where temperatures exceed 60 °C, as excessive heat can soften the rubber and compromise the seal. Wear appropriate personal protective equipment, including safety glasses and gloves, when connecting or disconnecting tubing to prevent accidental exposure to hazardous gases. Ensure that the work area is well‑ventilated, especially when sampling volatile compounds, to avoid accumulation of potentially toxic vapors. In the event of a sudden pressure loss, close both valves immediately and inspect the bulb for any signs of rupture before proceeding. Follow all institutional safety protocols and consult the material safety data sheet (MSDS) for the specific gases being handled.

The rubber used in the HEA20631B is sourced from manufacturers that adhere to environmentally responsible production standards, minimizing the release of volatile organic compounds during manufacturing. The bulb’s design emphasizes durability, reducing the frequency of replacement and thereby decreasing waste generated by laboratory consumables. At the end of its service life, the rubber component can be recycled through specialized rubber recycling programs, while the PVC fittings are compatible with standard plastic recycling streams. Heathrow Scientific encourages customers to return used bulbs for proper disposal or recycling, offering a take‑back program that aligns with green laboratory initiatives. By choosing a product that balances performance with sustainability, laboratories can contribute to broader environmental stewardship goals.

Laboratory managers who have integrated the HEA20631B into their gas handling workflows report noticeable improvements in reliability and ease of use. One senior chemist noted, “The dual‑valve design eliminates the need for extra adapters, saving valuable bench space and reducing setup time.” Another researcher highlighted the bulb’s chemical resistance, stating that it performed flawlessly when sampling ammonia and hydrogen sulfide without any signs of degradation. A quality‑control engineer praised the consistent volume accuracy, which helped maintain tight tolerances in analytical assays. Overall, users appreciate the combination of affordability, durability, and straightforward operation that the HEA20631B provides.

In summary, the Heathrow Scientific HEA20631B vacuum pressure bulb delivers a robust, versatile, and cost‑effective solution for a wide range of laboratory gas handling applications. Its 85 mL capacity, heavy‑wall rubber construction, and dual‑valve design provide reliable performance for sampling, transfer, and storage of gases across diverse research and quality‑control settings. The product’s compliance with industry standards, coupled with comprehensive support and warranty coverage, makes it a trustworthy choice for both seasoned professionals and educational institutions. By selecting the HEA20631B, laboratories gain a dependable tool that enhances experimental accuracy, simplifies workflow, and supports sustainable laboratory practices.

Usage

The bulb is ideal for laboratory gas sampling, pressure testing, and inert gas storage, serving research, quality‑control, and educational settings where reliable, leak‑free handling of small to medium gas volumes is required.

Why Choose Us

Heathrow Scientific combines rigorous ISO‑9001 manufacturing, extensive testing, and dedicated after‑sales support to deliver a gas handling bulb that meets industry standards, offers long‑term durability, and provides peace of mind for laboratory professionals.

Key Features

• Heavy‑wall rubber construction resists cracks and maintains shape under pressure.
• Dual rubber valves with PVC connections enable bidirectional gas flow without extra adapters.
• 85 mL capacity provides ample sample volume while remaining compact for bench use.
• Chemical‑inert material prevents contamination and off‑gassing with a wide range of gases.
• Comprehensive one‑year warranty and responsive technical support ensure reliable after‑sales service.

FAQ

Can the bulb be used with gases other than nitrogen?

Yes, the bulb is compatible with most laboratory gases such as oxygen, carbon dioxide, ammonia, and hydrogen sulfide, provided the pressure does not exceed the 30 psi rating.

What type of tubing should be connected to the PVC ports?

Standard PVC or silicone tubing with 1/8 inch or 1/4 inch outer diameter fits the ports, and hose clamps or quick‑connect fittings can be used to secure the connection.

How should the bulb be stored when not in use?

Store the bulb in a clean, dry place away from direct sunlight and extreme temperatures to preserve the rubber integrity and prevent degradation.