Founded in 1959, Flowserve's Worcester Control products are recognized today as one of the world's leading brands.  Worcester can claim what is arguably the most comprehensive product range of any ball valve manufacturer in its field.  From standard flanged ball valves to both ANSI and DIN specifications in reduced and full bore, to three piece valves for cryogenic, high pressure, steam, diverter or sampling duty, or high integrity valves, multi-way designs, modulating controls or customized solutions to specific user problems, they supply valves throughout the world for virtually any application.

Worcester Controls has the quality solution to your flow control needs.  Their valves, actuators and controls serve a wide range of industries where performance, cost reduction and operation safety are primary concerns. As industries look for more user-friendly control products, Worcester Controls continues to deliver a higher level of technology for its customers.

Worcester Complete Catalog (2.2 mb .pdf File)

3 Piece Ball Valves

3 Piece Ball Valve Catalog (1.5 mb .pdf File)

Series 44 Ball Valves

A quantum advance in ball valve durability, cycle life, leak tightness and automation.  Flowserve Worcester Controls Series 44 three-piece ball valves, for many years the most respected ball valve design in the industry, are now better than ever. A major research, design, and testing program brings you a new valve, designed to ANSI B16.34 specifications with advanced seal technology and body mount bracket design. This means a very strong, tough valve that can handle pressure and unforeseen piping strains with a stem seal that extends operational cycle life and a standardized overall design that keeps parts inventory to a minimum.

Series 45 Ball Valves

Compact, Large Diameter, Three-piece Ball Valves. Substantially Reduced Installation and Maintenance Costs.  For OEM equipment and packaged piping systems, Worcester Controls Series 45 ball valves provide the best performance for the least installed cost in the 21/2"–6" size range. Flanges are an integral part of the valve design, providing savings in flanges, nuts, bolts and labor. Three piece construction also means that the valve functions as both valve and union. This is a valuable feature in welded piping systems where line breaks are required.

Series 59 Ball Valves

Full-Port Ball Valves. Manual and automated valves for processes requiring maximum flow area.  Full-port ball valves are recommended for processes requiring minimum restriction through piping, shutoff valves, and other equipment. For example, pump inlet valves are often full-port valves. Full-port valves are also useful in systems handling slurries, viscous fluids and fluids with residues, and where the capacity to pig lines is desired.

High Pressure/Temperature Ball Valves

HPHT Ball Valve Catalog (1.5 mb .pdf File)

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Series 4 High Pressure Ball Valves

Lubetal™ seated high-performance ball valves capable of pressures to 3000 psi, temperatures to 180°F.  Worcester Controls Series 4 is a rugged, three-piece valve designed to handle high-pressure applications beyond the capabilities of the Series 44 ball valve line, i.e., above ANSI Class 600. The unique seat design assures bi-directional tight shutoff and adjusts automatically for changing pressure and temperature variations and wear.

Series H44 Dyn-O-Miser® for Higher P/T

Resilient-seated high-performance ball valves capable of pressures to 5000 psi and temperatures to 450°F.  Series H44, an advanced design ball valve that can take the stress of hydraulic and other high-pressure systems. Worcester Series H44 three-piece ball valve continues to be one of the most respected ball valve designs in the industry. With advanced sealing technology and top-mount actuator bracket design, this ball valve is very durable and can handle pressures to 5000 psi and temperatures to 450°F.

High-Per Mizer

A High-Durability Ball Valve for Superheated Steam, High-Temperature and Abrasive Fluid Applications.  Metal-seated versions feature a unique and patented seat sealing design, which incorporates an alloy stainless steel seat impregnated with self-lubricating fillers. The rigid metal seat construction is strong, highly wear and corrosion resistant, and eliminates fracturing common to graphite-based seats.  Resilient-seated versions feature High-Per Fill® seat. Proprietary to Flowserve Worcester Controls, High-Per Fill is a blend of polyetheretherketone, glass and graphite fillers. This blend strengthens, provides thermal resistance even at high pressures, prolongs cycle life and reduces operating torque. High-Per Fill is chemically inert, has a broad corrosion compatibility and is a non-halogen (no TFE) material.

Series H71 Ball Valves

Exceeding the High-Pressure Technology Requirements of Deep Sea Oil Production, Hydraulic and Compressed Natural Gas Processes.  Worcester Controls Series H71 is a line of safe, durable ball valves for high pressure fluids to 6000 psi. The three-piece design is compact with low torque quarter-turn operation, blowout proof stem and easy repair and maintenance. Series H71 is built for harsh environments, from seabed systems to corrosive chemicals.

Directional Ball Valves

Directional Ball Valve Catalog (1.6 mb .pdf File)

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Series D44/D4 Ball Valves

Diverter Ball Valve - Separate Seats and Body Seals, One Flow Direction.  The diverter valve is designed to accept media through a bottom inlet port and direct it out either of two outlet ports. It is commonly used for alternately diverting flow from a single source to two different lines, for example dumping operations in which one outlet permits media to flow from a common source to the process while the other outlet alternately dumps or recirculates excess media.

3-Way Ball Valve - One Piece Seat and Body Seal, Bi-Directional Flow.  The 3-way ball valve provides greater flexibility in operation. Constructed with a one piece seat and body seal, the 3-way valve permits flow in both directions. It can function as a selector valve, alternately accepting media from either of two inlet sources and directing through a single outlet. Or, it may be used as a true 3-way valve, accepting media from two inlet sources for alternate discharge through either of two outlet ports. For example, in a pressurized line or system, the inlet port pressurizes or fills the system. The valve is then operated through its travel to allow the pressurized contents to be discharged through the second outlet port with the original outlet port now functioning as the inlet.

Series D51 Ball Valves

A Simple, Dependable Way to Divert Flow to Two Pipe Lines with Tight Shutoff to Either Line.  Worcester’s Series D51 is a standardized line of flanged diverter ball valves in sizes 2", 3", 4", 6", and 8" with ANSI Class 150 flanges. D51 diverter valves are designed to accept media through a bottom inlet port and direct it out either of two outlet ports. They are commonly used for alternately diverting flow from a single source to two different lines; for example, dumping operations in which one outlet permits media to flow from a common source to the process while the other outlet alternately dumps or recirculates excess media.

Series 18/19 Ball Valves

Upgrade the efficiency of your fluid diverting, filling and distribution systems through piping simplification, automation and safety.  Flowserve Worcester Controls’ Series 18 and 19 multi-way valves are designed to improve the efficiency and productivity of your process systems with up to 5 ports, slip-on flanges, multiple seat and body materials, standard or full port, and optional pneumatic and electric automation and anti-fugitive emission design. Screwed, socket weld and butt weld ends are available as are slip-on flanges (ANSI Class 150 or 300).

Wafer/Flanged Ball Valves

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Series 51/52 Ball Valves

Worcester's Series 51/52 is a standardized line of flanged ball valves in sizes 1/2"-10" with flange ratings of ANSI Class 150 and 300.  The combination of elements of this standardization provides a manually operated or automated valve which exceeds the production requirements of your process. Such requirements include high cycle operation, pressure integrity, material compatibility, speed of operation, automatic control and high temperature endurance.

Series 82/83 Ball Valves

Worcester's Flanged, Full Port Valves are designed to meet recognized industry standards in a wide variety of industries including, chemical processing, petrochemical, oil and gas production, pulp and paper and others.

Series 82 - ANSI 150# Flanged Full Port Ball Valve
Series 83 - ANSI 300# Flanged Full Port Ball Valve

Series 818/828 Ball Valves

Worcester's all new full port Flanged ball valve features worldwide design standardization, fire-safety, OSHA lockout, ISO actuator mounting and best price and performance value.

Series 82 - ANSI 150# Flanged Full Port Ball Valve
Series 83 - ANSI 300# Flanged Full Port Ball Valve

Series 151/301 Ball Valves

Worcester Controls 151/301 wafer ball valves are designed for process systems where lightweight, compact envelope size and ease of installation and repair are important considerations. Available in sizes 3", 4" and 6", 151/301 wafer valves are rated at 720 cwp and mount between ANSI Class 150 lb. and 300 lb. flanges. Studs, suitable for the flange rating, are furnished with the valve.

Special Service Ball Valves

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Series 94 Fugitive Emission, Toxic Gas or High Cycle Valves

Worcester’s Series 94 valve sets new performance standards for both cycle-life and leak tightness of ball valves. Available in flanged body or 3 piece styles, it offers a unique combination of features:

• Dual Stem Seals
• Double “Live-loaded" Stem Seals
• Two Stem Purge Bosses
• Conductive Stem Seal
• The valve goes from full open to full closed with 90° operation of the stem
• The bonnet and body are cast as a single piece.
• Stainless Steel or Hastelloy-C anti-corrosion trim to meet NACE MRO 1-75

Fire Rated Ball Valves

Worcester Controls has the quality solution for tough valve applications where operational integrity must be maintained before, during and after a fire. The solution is Worcester’s Fire-Rated Valves that assure tight shutoff and prevent external leakage in the tremendous heat of an industrial fire.  Worcester Controls Fire-Rated Valves meet the requirements of all major fire-safe standards including EXES 3-14-1-2A, API 607 Edition 4, Factory Mutual FM-7440 and British Standards BS5146 APP.B, BS 5351 Anti-Static and BS 6755-PT2.

Chlorine Service Ball Valves

Worcester Controls has the quality solution for tough applications involving chlorine, from the manufacture of the basic chemical to processes involving its use including pulp and paper bleaching and production of feedstocks.  All of Worcester's Chlorine Ball Valves are constructed in accordance with the guidelines of the Chlorine Institute as outlined in Pamphlet 6, Piping Systems for Dry Chlorine.

Cryogenic Ball Valves

Worcester Controls has the quality solution for tough applications involving all types of cryogens; oxygen, hydrogen, methane, ammonia, nitrogen, fluorine, LNG and deuterium. Our complete line of cryogenic valves, backed by years of successful field experience, incorporates superior technology and design. This means automatic or manual control of cryogenic fluids with no contamination, no fluid degradation and no waste while assuring safety to human life, property and the environment. The wrong specs here can turn an inferior valve into a time bomb. Tough applications demand Worcester Controls' special service cryogenic valves.

Steam & Thermal Fluid Valves

The Worcester Energy/Thermal Fluid Mizer is a rugged ball valve for steam and thermal fluid service. 

High Purity & Aseptic Valves

Worcester Series WK44 Clean SS,  WK74 SS, & WK70 Forged SS Ball Valves for high-purity and aseptic processes operate dependably in the pharmaceutical, biotech, food, cosmetic, paint, chemical and semi-conductor manufacturing industries where microbes, media deposits, mineral impurities and cross-contamination can threaten the quality of the product. The high-purity design, high vacuum rating, high cycle life and pressure/temperature rating of these valves make them ideal for applications from sterile steam to nutrient inlets to high-purity water.

Rubber & Plastic Molding Valves

Worcester Series MP44 Ball Valves are high performance, high cycle, thermal shock-proof valves for automated curing and molding operations.  Worcester Controls, working with a leading tire manufacturer to solve chronic production problems, developed the MP44 valve for rubber and plastic molding operations.

Tank Bottom Valves

Worcester Tank Bottom Valves are for biotech, pharmaceutical, food, chemical and cosmetics processing.

Cavity Filled Ball Valves

Worcester Controls offers the quality solution to sticking valve problems ... cavity filled ball valves. Some of the roughest process control problems involve those in butadiene and styrene services. These and other fluids such as rubber polymers can polymerize in place. That means they can polymerize inside valve body cavities effectively immobilizing the valves. Worcester cavity-filled valves offer excellent performances in control of pharmaceuticals, food products, sticky and viscous fluids and slurries.

Steam Let Down Valves

Worcester Steam Let Down Valve for high-cycle steam let down and purging applications.

Oil and Gas Valves

Worcester Controls has tailored the LTS4 Series Valves to meet the severe condition of Oil and Gas Production in Northern Climates. All materials and seals were carefully chosen to meet or exceed the -50°F (-45°C) minimum design temperature. Additionally, the LTS4 valve incorporates Worcester’s standard three-piece design and components making the valve easy to service with readily available repair parts.

Actuators

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Electri-SAFE is an Electro-Hydraulic Actuators

Worcesters Electri-SAFE actuator is a powerful, compact and economical means of electrically actuating valves in your process while meeting your safety requirements. Electri-SAFE is an Electro-Hydraulic actuator that operates like a spring-return pneumatic actuator. You get the same speed and reliability you are used to with pneumatic actuators, but far more cost effectively.

Series 75 Electric Actuators

Worcesters Series 75 Electric Actuators add a new dimension of operational dependability and flexibility to modern processes controlled by computers, programmable controllers and other electric control equipment. A multi-function capability permits use of the Series 75 actuator throughout the process for on/off, throttling, variable-cycle and any analog or digital control. One of the most reliable electric actuators on the market, the Series 75 is lightweight, compact and powerful. Its split phase capacitor AC reversing motor or DC motor drives a valve through a sealed, permanently lubricated gear train which offers virtually lifetime maintenance-free dependable operation.

Series 36 Electric Actuators

Worcester's Series 36 Unidirectional Electric Actuator provides direct, positive, automatic, on/off, quarter-turn valve operation at a low cost. It requires only a single electrical connection as a power source, and it can be easily installed in most piping systems because of its compact design.

Series 39 Pneumatic Actuators

Worcester's Series 39 Pneumatic Actuator design is based on the opposed rack-and-pinion principle utilizing piston guide rods to guarantee part alignment. The fully supported guide rods minimize friction and wear between the pistons and the body bore.  Where a compact, automated valve installation is required, an end-mounted limit switch module is also available with the Series 39 actuator.

Worcester ACCESS Package

Worcester's ACCESS Package combines the field-proven 39 Series pneumatic actuator with integral limit switches, proximity sensors, solenoid and optional digital protocol communications. This package eliminates the need for additional enclosures, couplings, tubing, mounting brackets and associated multiple vendor involvement.

Series 34 Pneumatic Actuators

Worcester's Series 34 Pneumatic Actuator is the most efficient actuator available, delivering “tailored torque” to provide fast, smooth and positive operation through the full cycle.

Series 32 Gear Operator

Worcester Controls makes manual valve operation easy with our Series 32 Gear Operator. Designed especially for Worcester Controls ball valves, the Series 32 allows slow-opening and precise manual positioning at low cost.

Handle Accessories & Locking Mechanisms

Worcester handle accessories make high temperature valve operation safe, position lockout secure and accidental operation unlikely.

Control Valves

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Series CPT Control Valves

After years of research and performance evaluation under severe throttling services, where precise computer control was required, Worcester Controls has developed the Series CPT Control Valves. These valves exceed the performance features of a traditional linear valve, as well as that of segmented ball and eccentric plug designs. The Characterized Seat Control Valve is a ball valve, but control capacity is defined by a revolutionary patented seat technology. These seats consist of a sintered stainless steel material that has been fully impregnated with TFE or Graphite, then laser cut to a customized shape to best suit the individual application. Combine these capabilities with our high-cycle pneumatic, electric, or electro-pneumatic actuators, positioners and accessories, and you have a control valve package that will meet the performance capabilities available with computers and PLC controllers.

Round Port Control Valves

For applications involving moderate pressure drops and temperatures, Worcester offers standard round port control valves in 3-piece, wafer, and flanged valve body configurations. Standard seat material is Polyfill® with other resilient materials available. Shutoff is bubble-tight. control characteristic is equal percentage.

Pulsair Loop Powered Microprocessor Controlled Positioner

Worcester Controls® is proud to present the Pulsair Loop Powered Microprocessor Controlled Positioner. It  is the missing link in computer controlled process loops.  This all electronic microprocessor based intelligent, pneumatic positioner offers the sophistication and performance to match that of today’s process control requirements.

Pulsair III Loop Powered Microprocessor Controlled Positioner

Worcester Controls® is proud to present the Pulsair III Loop Powered Microprocessor Controlled Positioner. It  provides accurate, high-speed digital process control with piezoelectronic technology and HART communication protocol.

PM15 Pneumatic Positioners

Worcester Controls® PM15 Pneumatic Positioners provide compact, cost effective, pneumatic and electro-pneumatic positioners for precise control of rotary devices.

DataFlo P Positioner

The DataFlo P Positioner, controlled by a 4-20 mA analog signal from a PLC or digitally from a computer, gives you calibration, monitoring and diagnostics both onsite or from a control room computer. This dramatically increases system dependability and lowers valve calibration, monitoring and maintenance costs. DataFlo P controls your process better and turns your final control element into an efficient digital communications platform.

AF17 Positioner

The AF17 Positioner is a unique circuit board specifically designed to provide accurate and reliable position control.  The operation of the AF17 is based on the comparison of two voltages—one derived from the input signal and the other from the feedback potentiometer driven by the actuator shaft.