Close Nipples Male NPT are precision pipe fittings designed to connect two female NPT threaded pipes in oil and gas and process systems. Their short, compact design allows installation in tight spaces while providing a reliable and leak-tight connection. Manufactured from high-quality materials such as stainless steel, brass, or carbon steel, they offer corrosion resistance and durability for demanding industrial environments.

The fittings are produced with burr-free internal surfaces to ensure smooth flow and minimize pressure drop. All threads are tapered in accordance with ASME B1.20.1 and SAE AS71051 standards, allowing secure engagement and leak-free sealing when used with appropriate thread sealants. Close Nipples are suitable for instrumentation lines, pipelines, and other fluid or gas transfer systems where precise alignment and compact installation are required.

They are rated for pressures up to 10,000 PSI, depending on material and size, and are marked with manufacturer, size, material, and heat code for traceability. The fittings are thoroughly cleaned to remove oils, grease, and loose particles, ensuring safe use in sensitive applications. Their simplicity, high-pressure capability, and space-saving design make them a reliable choice for critical connections in oil and gas operations.

The 3/8" poppet type check valve with female × female NPT connections allows fluid to flow in one direction while preventing backflow in oil and gas systems. Its poppet mechanism responds quickly to flow changes and provides a positive seal under pressure, protecting pumps, pipelines, and other equipment from reverse flow and pressure spikes. This size is suitable for small to medium diameter lines, instrumentation, sampling, and control applications where reliable uni-directional flow is required.

The valve has a standard working pressure of 6000 psi, with optional configurations up to 10000 psi. Cracking pressures are selectable from 1/3 to 25 psi to meet system-specific requirements. It is available in corrosion-resistant materials including SS 316, SS 316L, Duplex, Super Duplex, Hastelloy C276, Inconel 625, Monel 400, and Brass.

The valve is designed for reliable long-term operation in demanding oil and gas environments. Its construction ensures consistent performance under varying pressures and temperatures, and the robust poppet mechanism minimizes maintenance requirements while maintaining system integrity over time.

The HDI 2000B Pressure Gauge System is a panel-mounted electronic device designed to measure and display high-pressure levels accurately in industrial and oilfield settings. It monitors pressures up to 20,000 psi with an accuracy of plus or minus 0.50 percent of full scale, making it suitable for critical applications where precise pressure monitoring is essential for safety and operational control.

The system consists of two main components: a digital gauge display and a remote pressure sensor connected by an interconnect cable. This design allows the sensor to be installed directly at the pressure source, such as a wellhead, pump, or manifold, while the display is mounted in a more accessible location for easy reading and monitoring.

The gauge features a six-inch liquid crystal display that combines a five-digit numeric readout with an analog bar graph composed of 101 segments. This clear and detailed display makes it easy to quickly understand both the exact pressure value and its trend, even in low-light or harsh environments. The display can be read from up to 35 feet away.

Power is supplied by a replaceable 3.6-volt battery designed to last between 12 and 18 months under continuous operation. Calibration and configuration data are stored in memory that does not require power, ensuring settings remain intact even when the battery is replaced or the system is powered off.

The pressure sensor employs strain gauge technology and is compatible with a wide range of connection types including standard pipe threads and flanges. This allows the system to be used across various equipment and pressure ranges, while simplifying maintenance by enabling cross-compatibility of sensors.

Optional analog outputs provide 4–20 mA or 0–1 volt signals to connect the gauge to control systems, data loggers, or remote displays. This supports centralized monitoring and integration with automated process control.

In oil and gas operations, the 2000B system is commonly used to monitor pressure at wellheads to ensure safe extraction pressures, on pumps to maintain correct fluid flow and prevent overpressure damage, and on manifolds to track pressure differentials between flow lines. Accurate, real-time pressure data from this system helps operators detect anomalies early, avoid equipment failure, and optimize production rates while maintaining safe operating conditions. Its robust design and modular installation make it well-suited for harsh field environments where reliability and ease of maintenance are critical.

The HDI 2250 Valve Position Indicator System provides a reliable method to monitor the open or closed status of manual and hydraulically operated gate valves on choke manifolds. It offers two modes of position verification: a clear visual indicator mounted directly on the valve, and an electronic signal transmitted remotely to control rooms or monitoring systems. This dual feedback delivers real-time valve position information both locally and from a distance, enhancing operational control and safety.

The system is compatible with a wide range of rising and non-rising stem gate valves from various manufacturers, adding position monitoring without compromising valve integrity or certification. An adapter enables installation on valves that lack built-in position feedback. The sensor is an inductive Namur type housed within a rugged 316 stainless steel case, engineered for hazardous oilfield environments. It operates on a 5 to 25 volts DC power supply, making it suitable for integration with most industrial control systems.

Weighing 15.3 pounds with the junction box mounted, the 2250 is built for durability and long-term performance in demanding onshore and offshore conditions. Once installed, it requires minimal maintenance, reducing operational downtime.

The system connects easily to local displays and remote monitoring platforms, offering a comprehensive view of valve positions across the manifold. It supports both Namur and proximity sensors, providing flexibility to meet different installation requirements.

The 2250 stands out for its ability to retrofit manual valves without modification, its robust construction for harsh environments, and dual visual and electronic position reporting. These features make it a practical, dependable choice for improving safety and operational awareness in oil and gas valve management.

The HDI 1000B Pressure Gauge System is an intrinsically safe, battery-powered, solid-state electronic pressure gauge designed for accurate and reliable pressure measurement in demanding industrial environments. It measures pressures ranging from 30 psi up to 20,000 psi with an accuracy of ±0.50% of full scale. The system features a durable design with no fluids or moving parts, reducing maintenance requirements and improving long-term reliability.

The gauge includes a clear liquid crystal display (LCD) that combines a five-digit numeric readout for precise pressure values with a 101-segment analog bar graph for quick trend visualization. The display is easily readable in various lighting conditions and includes a low battery indicator to ensure continuous operation.

The 1000B system is modular, comprising a gauge display, inline cable, and sensor assembly. This design allows the display to be positioned close to or remotely from the pressure measurement point, providing flexibility in installation. The system supports multiple connection types including 2” Male NPT, 2” 1502, 2” 2002/2202, or flanged connections to fit different piping standards.

Power is supplied by a replaceable internal 3.6 VDC battery pack, which typically lasts up to 18 months during continuous operation. The gauge system is designed to retain calibration and settings during battery changes or power interruptions, enhancing reliability in field use.

For integration with control systems, the 1000B offers optional 4-20 mA or 0-1 V outputs, enabling remote monitoring, data logging, or connection to PLCs and chart recorders. The system is built to withstand high vibration environments, making it suitable for offshore, drilling, and other heavy industrial applications.

Overall, the 1000B Pressure Gauge System provides a precise, low-maintenance, and versatile solution for pressure measurement needs where safety, accuracy, and durability are critical.

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 Monoflange DBB Double Block and Bleed Valve with Needle-Needle-Needle configuration is designed to provide dual isolation and safe venting in oil and gas, chemical, and process systems. Both isolation points use needle valves, allowing precise control of flow and pressure in the cavity between the two isolation points, which minimizes leakage and ensures accurate venting. This configuration is particularly suited for instrument and gauge isolation, chemical injection, and sampling applications, where fine control and safety are critical.

The monoflange design integrates the two isolation valves and the bleed into a single compact body. This eliminates the need to bolt together separate valves, reducing the number of joints, potential leak paths, and overall weight, while saving installation space and simplifying maintenance. The valve can accommodate flange sizes from 1/2” to 2” and is rated for Class 150 to Class 2500, making it suitable for a wide range of high-pressure applications.

Manufactured to recognized industry standards including ASME B16.34, API 6D, and ISO 17292, the valve is available in a variety of materials such as SS 316, SS 316L, Duplex, Super Duplex, Hastelloy, Inconel, and Monel. Optional NACE MR-0-175 compliant materials are available for corrosive environments. In-built vent valves and low emission testing ensure the valve meets stringent safety and environmental requirements, providing a reliable solution for critical fluid control applications.

The Square Body Needle Valve Female x Female is engineered for precise flow control in high-pressure fluid systems commonly found in the oil and gas industry. Its design features a robust square-shaped body, which provides stability during installation and operation, reducing the risk of leaks and mechanical stress. The female x female configuration allows the valve to connect two female-threaded pipes or instrumentation components directly, eliminating the need for additional adapters and simplifying system layout.

The valve operates with a fine-threaded stem that provides smooth, accurate regulation of fluid flow, enabling controlled start, stop, and throttling functions. A metal-to-metal body bonnet seal ensures reliable sealing at high pressures and temperatures, while the back-seated stem and self-centering tip deliver consistent, leak-free shutoff.

These valves are suitable for a range of applications, including instrumentation, process monitoring, sampling, and control systems, where precise flow control and reliable operation are critical. The square body design also facilitates easy wrench access and torque application, making installation and maintenance straightforward in complex piping arrangements.