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  • Thread Sealant - Your Complete Guide

    A Complete Guide to Thread Sealants

    What are Thread Sealants?

    Thread sealants are sealants that are responsible for achieving a leak-proof seal especially in joints that are dynamically vibrating and changing pressures. Thread sealants majorly come in three varieties: pipe dope, resin compounds and Teflon tape. They efficiently prevent gas leaks from along the pipe threads in cylinders and other gas/liquid equipment when applied properly.

    Thread Sealant

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  • Types of Cryogenic Valves - Applications and Advantages

    Cryogenic valves, as the name indicates, are valves that are used in extremely cold applications. Hence these are mostly found to be useful in companies that work with Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG). The valves are commonly found in the oil and gas industries which usually deals with cryogenic temperature ranges starting from as low as -150°C (-238°F). Cryogenic valves are constructed to store such gases safely and also work great during transportation due to their ability to function efficiently in pressure settings as high as 750 psi and temperature as low as -196°C (-320°F).

    Cryogenic Valve

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  • Sherwood Chlorine Valves - Types of Chlorine Valves & Chlorine Gas Accessories

    Sherwood Valve manufactures different types of Chlorine Valves and Chlorine Gas Accessories to better serve the ever-changing various industries.

    Sherwood Chlorine Valves

    1. Basic Valve

    Manufactured in conformance to Chlorine Institute Pamphlet 17

    • • One-piece Monel stem offers exceptional durability and positive shut-off on chlorine and other corrosive gas service
    • • Choice of PTFE or Garlock 6130 Packing for easy operation and durable leak-resistant stem seal
    • • Large wrench flats on valve body for easy installation
    • • Robust aluminum silicon bronze valve body offer corrosion resistance
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  • Valve Uses - The Dos and Do Nots of Valve Use


    Proper care of compressed gas cylinder valves includes (but is not limited to) the following:

        • • Store valves packaged so cleanliness is maintained and adequate protection against damage is provided.
        • • Visually inspect all valves for leakage and damage at every refill.
        • • Reach out to your supplier if the valve is malfunctioning and the problem cannot be diagnosed.
        • • Inspect PRD before installing and refilling.
        • • Verify the valve is suitable for both the cylinder and its intended use.
        • • Open valve slowly to prevent development of high pressure surges and heat generation on down-stream equipment.
        • • Only use original manufacturers parts and assemblies when replacing PRD (unless the interchange of parts is proven by manufacturer testing).
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  • Sherwood Valves Introduction

    Sherwood Valve has been serving the compressed gas industry for over 90 years. Founded in 1923, Sherwood has earned a reputation for high quality products that not only keep pace with customer requirements, but also anticipate the changing needs of various industries served. All Sherwood products are designed to meet the highest standards and only quality materials are used. Continue reading

  • CO2 Cylinders - The Dangers of Heat Exposure to CO2 Cylinders

    CO2 cylinders are considered full once the weight of the CO2 charge is equal to 68% of the weight of the total water capacity of the CO2 cylinder. This is due to the expansion characteristics of the CO2 charge and the dramatic effects temperatures has on CO2. As temperatures decrease, the CO2 charge shrinks; while when temperatures rise, the CO2 charge will greatly expand. Since the CO2 charge is limited to the capacity of the cylinder, these changes are measured as an increase or decrease in pressure. Continue reading

  • Storing CO2 Cylinders

    Anyone storing CO2 cylinders should be aware of the hazards associated with CO2 and should be trained in safe practices of storing CO2 cylinders. Below is a list of suggested safe storage practices of CO2 cylinders. Continue reading

  • The Dangers of Overfilling CO2 Cylinders

    Overfilling a CO2 cylinder, accidentally or purposefully (ex: trying to get longer service out of one charge of a cylinder), can have unexpected and catastrophic consequences due to the characteristics of CO2 charge. Continue reading

  • 10 Great Tips for Safely Filling CO2 Cylinders

    It is HIGHLY recommended that only trained personnel fill CO2 cylinders.

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  • Valving Industrial Gas, CO2 and Oxygen Cylinders

    The following procedures are recommended for valving industrial gas and oxygen cylinders: Continue reading

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