The Instrumentation Group is dedicated to being a global leader in the design, manufacture and distribution of high quality, critical flow components for worldwide process instrumentation, ultra high purity, medical and analytical applications. TECHNOLOGY, APPLIED by a company defined by engineers, driven to create the highest-quality instrumentation components for your applications.

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Instrumentation Valves

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Needle Valves   Ball Valves   Plug Valves   Relief Valves

Metering Valves    Bleed Valves    Check Valves 

Filters   Manifold Valves   High Purity   Teflon Valves

Needle Valves

NP6 Needle Valve Catalog (PDF 697kB)

Parker’s NP6 Needle Valves are designed with packing below the stem threads and a two-piece stem. The packing below the threads protects the flow stream from thread lubricant contamination or washout and also protects the stem threads from potential damaging effects of the media. The two-piece stem produces a non-rotating lower stem for superior, repeatable sealing and reduced packing wear.

SN6 Needle Valve Catalog (PDF 1.0MB)

Parker’s compact SN6 Needle Valves provide shut-off and coarse regulation of liquids and gases utilized in process and instrumentation applications. These rugged valves are manufactured from stainless steel barstock and are integral bonnet designs with packing above the stem threads.

Union Bonnet Valve Catalog (PDF 1.7MB)

Root & Blow-Down Valves (PDF 183kB)

Parker’s U Series Union Bonnet Valves have been engineered for use at pressures up to 6,000 psig (414 bar) and temperatures as high as 1,200°F (649°C). A non-rotating lower stem helps to extend packing life by removing rotation from the packing area. Stem packing below the threads isolates the thread lubricant from the flow, ensuring adequate lubrication regardless of the media.

V Series Needle Valve Catalog (PDF 1.7MB)

Parker’s V Series Needle Valves are designed for positive leak tight shut-off and regulation of fluids in process, power, and instrumentation applications. With a wide variety of port sizes and styles, temperature capabilities ranging from -65°F to 450°F (-54°C to 232°C) and pressures to 5000 psig (345 bar), V Series Needle Valves provide the user with the utmost in flexibility when designing miniaturized tubing or piping systems.

VL Series Needle Valve Catalog (PDF 192kB)

The Parker VL Series Needle Valves are excellent for applications involving passive media at moderate pressures. For many, they are the right combination of performance and value. These screwed bonnet designs re manufactured from brass forgings and are standard with PTFE packing below the stem threads. Two PTFE coated stem tip options provide repetitive tight shut-off and/or coarse regulation in both liquid and gaseous service.

VQ Series Needle Valve Catalog (PDF 2.3MB)

Parker’s VQ Series Needle Valves are the right combination of performance and value for manual or pneumatic on/off control in moderate pressure and temperature applications. The manual version employs a toggle handle for quick action at pressures up to 300 psig (21 bar). Compact double acting, normally closed, and normally open pneumatically actuated versions of this valve are ideal for automatic control at pressures up to 600 psig (41 bar).

Ball Valves & Plug Valves

Rising Stem Plug Valve Catalog (PDF 995kB)

Parker’s Rising Plug and Gauge/Root Valves are available with a variety of seat and seal materials. They are screwed bonnet designs featuring bonnet lock plates. The PV and PVG Series of valves provide a straight through flow path in two orifice sizes. The valves utilize a non-wetted upper stem and a non-rotating lower stem in conjunction with a tapered seat for positive shut-off and long seat life, even in particulated media.

B Series Ball Valve Catalog (PDF 1.4MB)

B12 Ball Valve Addendum (PDF 160kB)

Parker’s manually, pneumatically, and electrically actuated two-way B Series Ball Valves provide quick 1/4 turn on-off control of fluids utilized in process and instrumentation applications. A broad selection of valve body, seat, and seal materials provide a wide range of pressures and temperatures at which the valve may be used.

HB Series Ball Valve Catalog (PDF 681kB)

Parker’s High Pressure HB4 Series Ball Valves, featuring Suparcase® ball and trunnions, provide reliable shut-off or switching functions. The Suparcase® trunnion style ball enhances the resistance of the trunnions against seizure and the resistance of the spherical ball to particle abrasion. The compact and rugged design employs spring-loaded seats for high cycle life and low operating torques at pressures up to 10,000 psig (689 bar).

MB Series Ball Valve Catalog (PDF 1.0MB)

Parker’s MB Series Ball Valves, with their rugged compact design, offer positive shut off or directional control of fluids in process, power and instrumentation applications. The unique one piece seat/packing design insures excellent sealing characteristics while accommodating a superior temperature range and cycle life. These valves are available in 2-way and 3-way configurations, brass and stainless steel construction, with a wide variety of port connections. Also, all ports are suitable as inlets to full operating pressure of the valve.

Actuator Catalog (PDF 1.7MB)

Parker’s 70 and 80 Series Electric Actuators are designed for electric actuation of Parker’s B Series, MB Series, HB Series, and SB Series Ball Valves. They provide reliable, cost effective, remote valve actuation.  Parker’s 60 Series Pneumatic Actuators spring return (AC/AO) or double acting (AD) rack and pinion actuators are compact, simply designed devices that are quality engineered to provide high torque outputs and a high cycle, trouble-free life.

Swing-Out Ball Valve Catalog (PDF 571kB)

Parker’s three-piece SWB Series Ball Valves are durable valves that can handle the pressure and piping loads. Features which make this reliable ball valve so unique include tight shut-off, advanced seat materials, and swing away three piece construction. The center section can swing out to quickly and easily replace seats, seals and the ball without major disruption to the piping system.

PR Series Plug Valve Catalog (PDF 230kB)

Parker’s PR Series Plug Valves provide positive leak tight shut-off, high flow capacity, and quick quarter-turn operation in a compact attractive package. The patented blow-out resistant seat design offers reliable sealing technology at all operating pressures. In addition to on-off actuation, the plug design allows forward flow throttling. A selection of valve seat and seal materials may be chosen for media compatibility and performance over a broad range of temperatures. The pressure balanced atmospheric seals are backed by PTFE rings to enhance their performance and increase cycle life.

Check Valves & Filters

C Series Check Valve Catalog (PDF 977kB)

Parker’s C Series Check Valves are designed for uni-directional flow control of fluids and gases in industries such as chemical processing, oil and gas production and transmission, pharmaceutical, pulp and paper, power and utilities.

CO Series Check Valve Catalog (PDF 681kB)

Parker’s CO Series Check Valves are designed for uni-directional flow control of fluids and gases in industries such as chemical processing, oil and gas production and transmission, pharmaceutical, pulp and paper, power and utilities. The CO Series Check Valve is particularly suitable for applications requiring high integrity leak rates and re-sealing capabilities.

CB Series Check Valve Flyer (PDF 950kB)

Parker’s CB, CBG, and CBF Check Valves have been designed to withstand the high temperatures, vibration, thermal cycling, and pressures encountered by dual-fuel turbines in virtually any application; from traditional power generation and oil & gas compressor drives to ship propulsion. By providing the best bubble-tight seal in the industry, these valves can significantly reduce or eliminate costly turbine shutdowns and maintenance caused by premature seat and seal failures.

LC Series Lift Check Valve Flyer (PDF 2.5MB)

Parker’s LC-Series Lift Check Valve has been designed for a wide variety of temperature extremes found in power, chemical, petrochemical, oil & gas, and laboratory applications. The LC-Series, ideal for liquid service, has been designed to prevent flow in the reverse direction to within 99.9% of forward flow. The gravity assisted poppet uses back pressure to achieve a seal.

F Series Inline Filter Catalog (PDF 177kB)

Parker’s F Series Inline Filters are designed for protection of instrumentation systems from undesirable materials. Component changes or repair and maintenance can admit dirt, chips, scale, or other contaminants to the small bore tubing.

FT Series Tee Filter Catalog (PDF 1.4MB)

Parker’s FT Series Tee Filters are designed for protection of instrumentation systems from undesirable materials. Component changes or repair and maintenance can admit dirt, chips, or other contaminants to the small bore tubing.

Relief Valves, Bleed Valves, & Metering Valves

RH4 Relief Valve Catalog (PDF 852kB)

Parker’s RH4 Relief Valves (High Pressure) are designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Flow through the valve increases proportionately to the increase in upstream pressure.

RL4 Relief Valve Catalog (PDF 980kB)

Parker’s RL4 Relief Valves (Low Pressure) are designed such that when the upstream pressure exceeds the closing force exerted by the spring, the lower stem opens, permitting flow through the valve. Flow through the valve increases proportionately to the increase in upstream pressure.

BV Bleed Valve Catalog (PDF 1.0MB)

Parker’s BV Series Bleed Valves are designed for use on products such as multi-valve manifolds or gauge/root valves. Functionally, the valve vents line pressure either to atmosphere or to containment when used with the optional barbed vent tube. Generally, bleed valves are used whenever an instrument is removed from a system or to assist in the calibration of control devices. The BV Series is also recommended for use in bleeding hydraulic systems.

HR Metering Valve Catalog (PDF 331kB)

Parker’s HR Series Metering Valves provide the highest degree of precision metering for moderate pressure applications. A choice of seven precision ground, tapered flat, non-rotating and non-rising valve stems enable repeatable metering at flow capacities as low as 0.0004 Cv. With 15 stem turns, this valve offers the ultimate in precision flow control. This series also features shut-off capability not found in most metering valves.

NS Metering Valve Catalog (PDF 395kB)

Parker’s NS Series metering valves are designed to provide accurate and stable control of flow rates in analytical, instrumentation, and research applications. A variety of connection sizes, body patterns and materials of construction provide considerable application versatility. For higher flow rates, refer to the NM and NL Series of metering valves.

Other Valve Division Products

Performance Stainless Valves & Flow (PDF 1.0MB)

Medium Pressure Products Catalog (PDF 5.3MB)

Parker MPI™ Fittings have been engineered and manufactured to provide secure, tight, and leak resistant connections throughout industry, including off-shore oil and gas exploration platforms, research labs, and other facilities that require operating pressures in the range of 6,000 to 15,000psi.

R-max Stream Switching (PDF 531kB)

The Parker R-max™ Stream Switching System is a multi-functional system capable of integrating both stream switching and filtering into one unique compact assembly. The system is designed to control both gases and liquids in analytical systems ranging from vacuum to 500 psig (34 bar) while requiring only 40 psig (3 bar) actuating air pressure. The Parker R-max™ utilizes state-of-the-art surface mount technology to reduce leak paths, internal volume, and dead volume.

IntraFlow Modular Systems (PDF 530kB)

NESSI Article (PDF 923kB)

Parker’s IntraFlow™ substrate fittings have been developed specifically for analytical, lab and other complex general purpose instrumentation flow control systems. ISA/ANSI SP76.00.02 compliant, Parker IntraFlow™ fittings provide maximum flexibility with minimal space requirements. All flow paths, regardless of direction, are maintained on a single plane within the system as there are no lower level manifold blocks required. Contiguous fitting flow paths are intra-connected with slip fit pressure connectors, while a threaded pegboard provides connection force and rigidity when fittings are mounted with cap screws.

Partek Valves (PDF 1.9MB)

More Partek Teflon Products (HTML)

Technical & Reference Pages (PDF 246kB)

Parker Partek Valves include:  Manual Valves, Pneumatic Valves, Check Valves, Relief Valves

Vent Master (PDF 2.4MB)

Sample streams discharged from process analyzers have historically been vented to atmosphere for disposal. This method is not only convenient, but also provides a very stable reference pressure necessary to insure accurate and repeatable analysis results. As environmental legislation becomes more stringent, sample discharge to atmosphere is no longer allowable in many cases and analyzer engineers must choose an alternate method. Catalytic burners offer one alternative, however they do not completely eliminate emissions, have a limited flow capacity and require frequent maintenance. Discharge to a vent header that subsequently feeds a flare header and stack offers another choice, but the dynamic nature of the header is not conducive to pressure stability which compromises analysis accuracy. Complex vent systems installed plant-wide are also available, but they are highly engineered and expensive to install. The Parker Vent Master is a totally mechanical integrated solution that actually creates a stable pressure within the vent header within 0.3” H20. Test results prove the Vent Master provides analysis accuracy within 0.06% over a vent header flow range of 0-18 SLPM with a flare header back pressure as high as 20 psig.

Vent Recovery System (PDF 774kB)

The Parker Analyzer Pressure Regulation and Vent Recovery System automatically and continuously adjusts for variations in gas supply pressures and flows. This system has been engineered to meet the requirement of continuous analyzers designed to operate at constant pressure in order to provide accurate analyses of gases. The combination of pressure and flow regulation provides the required stability even with greatly varying inlet and outlet pressures.

Sample Cylinders (PDF 658kB)

Parker stainless steel sample cylinders provide safe containment for storage and transportation of both liquids and gases. These cylinders are DOT rated to 1800 psig (124 bar) at 70 °F (21 °C). Applications include hydrocarbon sampling in refineries, gas sampling in chromatography, and condensate sampling in fossil fuel and nuclear power plants. ANSI/ASME B1.20.1 internal pipe threads are machined into both ends of each cylinder to engage external pipe connections of Parker valves, rupture disc units, or fittings.

Automatic Steam Trap (PDF 86kB)