In most modern applications there is often a requirement to take a sample of the process fluid or inject a particular chemical directly into the process stream at full operating pressures and temperatures
To meet this requirement then any of the YDB Valve ranges of Double Block and Bleed Valve including one piece body DBB, Modular Type, Monoflange Valve and Manifold Valve can be fitted with either an Injection Quill or Sampling Probe whilst retaining the wide choice of options available in each range.
Probes and Quills extend into the process medium and are designed to meet the individual application requirements. Units can be fitted with an Integral Check Valve to prevent back flow into the process stream.
Injection Quill DBB Valve Valve is trusted across various industries for its precision, durability, and reliability. Explore its wide-ranging applications below:
Used for chemical injection in pipelines, the Injection Quill DBB Valve ensures precise delivery of inhibitors, surfactants, and other chemicals with safe isolation and venting features.
In chemical plants, this valve is used for injecting additives, catalysts, or corrosion inhibitors into processing streams with high precision and safety.
Ideal for dosing chemicals like chlorine or anti-scalants into water treatment systems, ensuring efficient distribution and safety during operation.
Used in power plants to inject treatment chemicals into boiler systems or cooling water lines, enhancing operational efficiency and safety.
Provides precise injection of critical chemicals in petrochemical processes, ensuring system integrity and reducing the risk of corrosion or scaling.
In many applications there is a need to inject chemicals such as de-waxing, de-icing or de-foaming agents into the process stream to facilitate a free flow of the process media.
The Injection Quill length (L) is manufactured to suit customer requirements. The Injection Nozzle is a 3mm diameter hole and other options available
Using the primary and secondary isolation valves the required chemical is injected directly into the process stream. It is usual for Injection Valves to be fitted witha non-return checkvalve that only opens when chemicals are injected into the process line thus preventing back flow out of the process stream.
Typically the need would be to allow a small process sample to be removed for evaluation under full system pressure.
Usually this is achieved by opening and closing of the primary isolation valve thus trapping a sample of the process fluid between the primary and secondary isolation valves. Using the vent valve this sample can then be safely vented off at reduced pressure.
Alternatively if larger samples are required then this can be achieved by use of the primary and secondary isolation valves with an optional Non Return Check Valve being fitted to prevent back flow into the process stream.
A high integrity full bore non-return valve, which can be fitted internally or externally, eliminates the risk of back flow into or out of the process stream. The design uses a spring loaded poppet to ensure leak proof performance and has standard cracking pressure of 10 psig although other cracking pressures can be supplied.
The Quill / Probe can be manufactured in several ways to suit the users' requirement:
Bore sizes are determined by the through bore of the DBB valve that have 10mm, 14mm and 19mm as standard. Other options are available kindly contact YDB VALVES.
Quill / probes are usually manufactured special to order and such are available in a full range of materials including 316SS, SS316L, LF2 Carbon Steel, A105 Carbon Steel, Duplex, Super Duplex, Hastelloy, 6 Mo, Monel, Inconel, Titanium etc
The profile of the end of the quill / probe can be manufactured to suit the application. Typically on sampling probes the end will be cut at 45 degrees to face the oncoming process stream whereas on injection quills the ends are usually sealed except for a small outlet hole as defined be the user.
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