The HDI 1522 Choke Position Indicator System is an electronic instrument designed to accurately measure and display the position of choke valves used in oil and gas production. Choke valves regulate the flow of oil, gas, or water from wells by adjusting the degree of restriction in the pipeline, which directly affects pressure control and production rates. The 1522 system provides highly precise position readings in one percent increments, ranging from fully closed (0%) to fully open (100%), enabling better management of well performance and enhanced safety.

This system uses solid-state electronics to convert mechanical valve movement into electronic signals via various potentiometer types—including linear, rotary, and retractable options—making it adaptable to a wide variety of choke valve designs and configurations. The position data is presented on a four-inch liquid crystal display that combines a numeric readout with a linear bar graph, allowing clear and immediate visualization of the choke’s exact position. The display is engineered for visibility from distances up to fifteen feet, suitable for typical field environments.

Powered by an internal, field-replaceable battery with approximately one year of continuous operation, the 1522 system minimizes maintenance requirements and eliminates the need for complex wiring. It also offers optional analog output signals, such as 4-20 mA or 0-1 V, enabling seamless integration with plant control systems, programmable logic controllers, data acquisition systems, or remote display units for centralized monitoring and automation.

The enclosure is constructed from UV-stabilized, impact-resistant polycarbonate and PBT alloy materials to ensure durability in harsh outdoor conditions. It is rated to operate reliably within a wide temperature range from -40°F to 176°F (-40°C to 80°C). The internal electronics are protected by a gasket seal to prevent dust and moisture ingress, maintaining performance and longevity.

Installation flexibility is enhanced through support for cable lengths up to 1,500 feet, allowing the gauge to be mounted in the most accessible or secure locations. Multiple sensor housing options and connector orientations simplify field installation and reduce the need for onsite customization, helping to minimize downtime and installation costs.

The 1522 Choke Position Indicator System delivers accurate, real-time choke valve position information in a robust, easy-to-install package. Its reliable performance, flexible integration capabilities, and low maintenance design support improved flow control, safer operations, and optimized production.

The Gauge Root Valve Female x Female connection is designed to control and isolate pressure instruments in process systems, particularly in oil and gas applications. It is rated for a standard working pressure of 6000 PSI, with the option for higher pressures upon request.

The valve is type-tested to MSS-SP-99 and designed according to ASME B16.34 for pressure-temperature ratings, ensuring reliable performance under demanding conditions.

The valve features a metal-to-metal body and bonnet seal, providing high-pressure and temperature sealing without the need for O-rings. It can operate in temperatures from -50°C to 230°C, with graphite sealing available for applications up to 500°C. The stem has a backseat for added security, and a self-centering, non-rotating tip ensures consistent shutoff and leak-free performance.

The packing is located below the stem threads, isolating the threads from process media, and the gland retainer is easily adjustable for maximum packing stability. The valve includes a removable T-handle for low-torque operation and a dust cap to prevent contamination. All valves are factory-tested with nitrogen at 1000 PSI to verify seat and packing leakage, with a maximum allowable leak rate of 0.1 sec/min.

Materials can be supplied to meet NACE MR 01-75 standards, and heat code traceability is provided. Additional tests, including vibration, temperature, and helium, are available on request. This design ensures long-lasting, reliable operation while protecting connected instruments and maintaining safety in high-pressure systems.

The 2 Valve Manifold H Type Flange to Flange is designed for use in the oil and gas industry to connect impulse lines and transmitters. Its simple two-valve configuration allows operators to perform essential tasks such as blocking, bleeding, and calibrating static pressure transmitters or gauges with ease. This design ensures accurate and reliable measurement while minimizing the risk of leaks or process interruptions.

The H Type manifold features a metal-to-metal body and bonnet seal, which provides a secure seal under high pressure and temperature conditions, eliminating the need for O-ring seals. The valves are designed with a self-centering, non-rotating tip to provide consistent positive shutoff and reduce wear on the packing. The stem includes a back seat for added safety, and a removable T-handle ensures smooth operation with low torque. A dust cap protects the stem from contamination, and rolled threads improve durability and ease of operation.

These manifolds are manufactured to meet ASME B16.34 standards for pressure-temperature ratings and are type tested to MSS-SP-99. They have a standard working pressure of 6000 PSI, with higher pressures available upon request. Materials can be supplied in accordance with NACE MR 01 75, and temperature ratings range from -50°C to 230°C, or up to 500°C with graphite. Every valve is factory tested for leakage and performance, and heat code traceability ensures quality and reliability. 

Hex Reducing Couplings Female NPT are precision pipe fittings designed to connect two pipes of different sizes while maintaining a secure, leak-tight connection. The female NPT threads provide a tapered seal that ensures a tight fit when connected to a male NPT thread, making them suitable for high-pressure systems up to 10,000 PSI. The hex shape of the coupling allows for easy tightening with standard tools, providing both convenience and reliability during installation.

Reducing couplings are specifically used when there is a need to transition between different pipe sizes in a system, allowing for flexibility in design and modification of existing pipelines. They help maintain proper flow rates, pressure, and system integrity without the need for custom fittings. This makes them essential in oil and gas systems where varying pipe sizes are common.

These couplings are manufactured from high-quality materials and are compliant with recognized standards, including ASME B1.20.1, SAE AS71051, ISO 7-1, and ISO 228, ensuring consistency, traceability, and durability in demanding applications. Hex Reducing Couplings Female NPT are ideal for situations where space is limited and a reliable connection between different pipe sizes is required, supporting both operational safety and system efficiency.

The 1/2" poppet type check valve with male × female NPT connections is designed to allow fluid flow in one direction while preventing backflow in oil and gas systems. Its poppet mechanism provides fast response and a positive seal under pressure, protecting pipelines, pumps, and equipment from reverse flow and pressure fluctuations.

The 1/2" size is suitable for medium diameter lines, instrumentation, sampling, and control applications where reliable uni-directional flow is required. Male × female connections enable secure inline installation and integration into existing piping systems without additional fittings, reducing potential leak points and simplifying system layout.

The valve has a standard working pressure of 6000 psi, with optional configurations up to 10000 psi. Selectable cracking pressures range from 1/3 to 25 psi, allowing precise adaptation to system requirements. Construction materials include corrosion-resistant SS 316, SS 316L, Duplex, Super Duplex, Hastelloy C276, Inconel 625, Monel 400, and Brass, ensuring durability in demanding oil and gas environments.

All valves are factory tested for cracking and reseal performance, with pneumatic testing at 1000 psig to verify seat integrity. Heat code traceability ensures quality and material verification, and additional testing including vibration, temperature, and helium is available for critical applications requiring high reliability.

Pipe Fittings Adapters Female to Male NPT are designed to connect a female-threaded pipe or fitting to a male-threaded pipe, providing a secure and leak-resistant joint. They are made from high-quality materials such as stainless steel, brass, and carbon steel to ensure durability and corrosion resistance in demanding environments.

The adapters are suitable for a wide range of pressures, with standard ratings up to 10,000 psi, and conform to industry standards including ASME B1.20.1, SAE AS71051, ISO 7-1, and ISO 228.

These adapters are used extensively in oil and gas applications, instrumentation, and process control systems where it is necessary to adapt different thread types or sizes. Their precise threading ensures maximum engagement and leak-tight connections, making them reliable for high-pressure or critical systems.

Available in sizes ranging from 1/8 inch to 1 inch, these adapters support efficient and safe connections in pipelines, instrumentation panels, and chemical or petrochemical systems. Their compact design allows for installation in tight spaces without compromising performance, and they are free from burrs or debris to maintain smooth flow paths.

The Double Block & Bleed Valve – Flange x Flange – Ball x Ball with Needle Drain is a high-performance isolation and venting solution designed specifically for oil and gas applications. This valve combines two independent ball isolation valves and a centrally located needle drain valve within a single, compact body, ensuring reliable double isolation and safe pressure relief or venting.

Manufactured in compliance with ASME B16.34, API 6D, and ISO 17292 standards, it offers assurance of global quality and safety benchmarks. The design accommodates line sizes ranging from ½” to 2”, with pressure ratings from Class 150 up to Class 2500, making it suitable for both standard and high-pressure operations.

The flange x flange connections provide secure installation and easy integration into piping systems, while the ball x ball configuration guarantees tight shut-off. The needle drain allows for controlled venting, sampling, or pressure equalization, enhancing operational safety and efficiency.

The valve is well-suited for critical applications such as pipeline isolation, meter calibration, instrumentation, and maintenance operations in oil and gas facilities. Its compact, space-saving design reduces potential leak paths compared to conventional multi-valve assemblies, lowering installation costs and improving reliability.

The Gauge Root Bleed Valve with vent tube and handle is a high-pressure valve designed to provide safe venting and pressure release in industrial and oil and gas systems. It is typically installed in high-pressure piping where pressure gauges or instruments are connected, allowing operators to isolate and safely bleed off pressure for maintenance, calibration, or inspection. The vent tube directs released media away from the operator, reducing the risk of injury or contamination, while the handle provides easy and precise manual operation.

This valve is rated for 6000 PSI standard working pressure, with higher pressures available on request, and is constructed with a metal-to-metal body and bonnet seal for reliable sealing at high temperatures and pressures. It features a backseat stem for added security, a self-centering, non-rotating tip to ensure leak-free performance, and a simple adjustable gland retainer to maintain packing stability over time.

Factory testing includes pneumatic tests with nitrogen at 1000 PSI to verify seat and packing integrity, with a maximum allowable leak rate of 0.1 sec/min. The valve materials can be supplied in stainless steel or other corrosion-resistant alloys and are compatible with NACE MR 01-75 standards. Heat code traceability ensures quality control and material verification for critical applications.

This valve is essential for safely isolating and venting pressure from instruments, gauges, or process line.

The Gauge Root Valve Bleed Valve with Vent Screw is designed for oil and gas applications where controlled pressure release is critical. It is installed on pressure gauges and instrumentation lines to provide a safe and easy way to vent trapped pressure. The vent screw allows operators to gradually release pressure without removing the valve, reducing the risk of sudden pressure surges that could damage equipment or compromise safety.

This valve is rated for 6000 PSI standard working pressure, with higher pressures available on request. It is built to ASME B16.34 standards and produced under ISO 9001, PED, and ATEX quality systems, ensuring reliability and compliance with industry requirements. The design includes a metal-to-metal seal for high-pressure and temperature applications, a durable vent screw that prevents leakage, and easy operation even in confined spaces. Its construction allows for long-term durability and minimal maintenance, providing safe and accurate operation for critical oil and gas instrumentation systems.