Yarway Blow-Off Valves

(Click here for Blow-Off brochure)
General description of Blow-Off Valves Basic requirements for the design and use of blow-off valves are established by the ASME Power Boiler Code, Section 1.  The general form of a valve, the materials of its construction, allowable boiler pressures, and the installation of the valve are all determined by the code. Yarway blow-off valves are designed in conformance with all code requirements1.Because the primary purpose of a blow-off valve is removal of dirt, sediment and scale, the boiler code requires that valves which have dams or pockets in which sediment can accumulate cannot be used in blow-off service. This means that ordinary globe valves cannot be used as blow-off valves. Yarway valves are especially designed for the punishment of blow-off service in boiler systems with pressures of 3,206 psig. The rugged construction of these valves can successfully withstand the combination of problems inherent in the service - a service in which high pressures result in high velocities which can cause wire drawing and cavitation of metal surfaces. The valves must also withstand the corrosive environment created by acid cleaning of boilers, and the potential wear problems caused by precipitated solids. The valves are also helpful in maintaining boiler level surge within desirable limits during quick startup of high pressure systems. Two broad categories of Yarway blow-off valves are available; those that operate on a sliding principle and those that operate on a seat-and-disc principle. 1. ASME Section 1, ANSI B31.1, ANSI B16.34. Features and Benefits of Yarway Blow Off Valves
Applicable Codes and Standards Pressure ratings per ANSI/FCI-69-1. Performance testing per ANSI/ASME PTC-39.1. End connections per ANSI B16.11.	Features:  Renewable in-line Designed to fail open Self-draining and freeze resistant  Install in horizontal and vertical (down) piping  Easy to install, no supports Integral strainer. 1/2" socketwelding blow-off connection optional Designed for superheat.
Yarway Welbond® High Pressure Globe Valve Designed to provide maximum service life with minimum maintenance.
(Click Here for Welbond Valves Brochure)	Accessible Internals Stem, disc and packing assembly easily removed through the yoke. Repair and repack in minutes in line. One-Piece Body Forging Includes stuffing box; eliminates body welds and pressure-containing threads. Captive Gland Bolts Allows quick release of packing gland without removal of gland nuts. “Ears” on gland prevent slipping. Optional API gland available. One-Piece Stellite Seat Insert To eliminate thermal cracking. Reserve of material permits repeated refinishing for longer service life
Welbond Valves - Fastest In-Line Repair - Repairable in-line more easily and at less cost than any other valve. Stem, disc, and packing can be quickly removed through the yoke, and the seat fully exposed for “like new” restoration. High Dependability - One-piece forged body without pressure welds, seal welds, pressure-containing threads or gaskets, body/bonnet joints, or any of their related problems. Greater Durability - Solid Stellite disc and seat ring all but eliminates cracking. Extra thickness of the seat ring also provides enough material to renew the seating surface over and over again. High Flow Capacity - Generous port sizes and disc retraction well beyond that required for optimum flow. These features help to minimize flow velocities and, therefore, decrease the erosive forces which shorten the life of the seat and disc. Available Off-The-Shelf - An in-depth stocking program makes Welbond valves available to you directly off-the-shelf (socketweld ends standard to 21/2”).You can be certain when you need a valve you’ll have it. Convertible Feature - The complete pre-machining of each Valve body means one of the backseat designs can be converted to the other, simply by reassembly with alternate backseat bushing.
Yarway Hy-Drop® Throttling Valve -- Controls the destructive forces inherent in high pressure drop service through rapid energy dissipation
(Click Here for Hy-Drop Valves Brochure)	General Description Valves used for throttling services have always been subject to rapid deterioration in the form of erosion, cavitation damage, and wiredrawing of vital parts. Even venturi valves and other special configurations are vulnerable. The Hy-Drop® Throttling Valve embodies a unique concept, which so controls the destructive forces inherent in high-pressure- drop service that deterioration of parts is virtually eliminated. Rapid energy dissipation is essential to the throttling process, and the Hy-Drop® valve actually encourages this at the same time containing its destructive capability.
Hy-Drop® Throttling Valve  The basis for this concept is in the configuration of the flow path as determined by the shape of the valve disc and seat. Fluid flowing through the annulus between disc and cylindrical seat accelerates smoothly until it reaches the blunt end of the disc. At this point, the flow area increases abruptly at its center and the resulting pressure drop at the core of the flow path causes rapid expansion of the fluid toward the core. Thus, the essential vaporization and turbulence occur at the center, within a layer of unvaporized fluid which continues to flow along—and protect— the sleeve wall. With this configuration, the vaporization process is so efficient that the vapor formed is momentarily super-saturated and the remaining liquid subcooled, until equilibrium is re-established a short distance down the sleeve passage.
Applications: The Hy-Drop® Throttling Valve is designed for continuous blowdown, but also works well for sampling, high pressure vents, boiler feed pump bypass relief, high pressure drop services associated with erosive and wiredrawing characteristics—or where velocity is sufficient to destroy valves of conventional globe or even venturi designs. Hy-Drop®  Features and Benefits Dual range throttling - primary range plus a super capacity blast range Rapid energy dissipation - controls the destructive forces inherent in high pressure drop service. Accurate and repeatable settings - micrometer dial assures setting accuracy and positive resetting capability. Quick-change disc - insert an interchangeable stem-disc into the same valve body to convert from one orifice size to another. Guided-disc - eliminates disc vibration and chatter. Dual-purpose disc - separate surfaces for shutoff and throttling. Stellite seat - resists corrosion and wiredrawing.  In-line repair - Yarway reseating tool can be used to cut a new seat in-line. Available in ASME SA-182 Grade F22 or ASME SA-105 body material
	Yarway Gun-Pakt® Expansion Joints Yarway joints are made in single end and double end types. Double end joints are frequently installed in place of two single end joints to reduce the number of pipe joints, or to meet local space conditions. On flanged end joints, end flanges are welded to sleeve and body in the single end type, and to both sliding sleeves in the double end type. Flange dimensions and drilling are according to ANSI B16.5 Steel Pipe Flanges and Flanged Fittings. Welding end joints have butt-welding connections for steel pipe lines. Fabricated steel anchor bases may be welded to the joint in any position specified. All double end joints have anchor bases, but single end joints are available with or without bases. Steam lines should be drained of condensate at low points to prevent damage due to water hammer, corrosion, sagging, etc. When used, drains should be connected to a suitable strainer and steam trap; when not used, the drain must be plugged. Yarway joints are available in sizes from 1-1/2" to 12". They are standard for 150 psi and 300 psi service. The flanges are drilled per B16.5 Class 150 (150 psi service) or Class 300 (300 psi service). Note the rating for the expansion joint is a maximum allowable pressure rating and not an ANSI Class. For example, a 300 psi expansion joint can be used only in a service where the maximum fluid pressure is 300 psig (at all temperatures). Maximum fluid temperature is 500 F for all packings.
Yarway Series YTF-30 Float and Thermostatic Steam Traps
This range of Series YTF-30 float and thermostatic steam traps covers higher capacity applications up to 125 psig.	Yarway Float and Thermostatic steam traps are designed to freely remove large quantities of condensate and air from unit heaters, space heaters, water heaters, converters, pressing machines and all steam process equipment. These traps are especially well suited for applications having low pressure differentials but needing higher condensate capacity. Besides industrial applications, due to their quiet operation, they are also used in institutional applications, such as hospitals. All working parts of Yarway Float and Thermostatic traps are made of corrosion resistant stainless steel for longer service life and are attached to the cover casting for easy access. Designed for in-line servicing, the unit may be inspected and parts replaced without breaking any pipe connections. A stainless steel bellows-type air vent is used instead of the more commonly used phosphor-bronze element to provide greater efficiency, improved protection against sudden surges in the flow of condensate and resistance to corrosion.
Yarway Turbo-Cascade® High Pressure Control Valve
	Designed and constructed to accept pressure drops of the highest magnitude. Features  • Incorporates three separate functions of  (1) positive fluid shutoff (2) regulation (3) pressure letdown.  • Designed and constructed to accept pressure drops of the highest magnitude.  • Assured disc-seat alignment through above and below seat guiding element.  • Suitable for modulating or on-off services.  • Can be provided with pneumatic, hydraulic, or electric actuators.  • Choice of forged body materials.  • Rigorously tested and proven successful.  • Successful performance record in scores of utility steam plants.  • Need for reducers can be eliminated. Normally, inlet and outlet end connections can match existing line sizes.  • Quiet operation resulting from velocity control. • Meet NACE requirements for corrosive service; “N” stamp capability
Yarway Multiview™Magnetic Liquid Level Gauges
	Multiview™ Yarway has long been recognized as a world leader in manufacturing products for liquid level monitoring. Yarway continually strives for excellence in product quality, customer service and on-time deliveries. Through the course of many years of research and development, product testing both in the lab and in the field, and monitoring product performance, Yarway has acquired a vast pool of knowledge … knowledge that has been passed on to our customers in the form of superior products. This commitment to excellence is the core of Yarway’s business philosophy. For many years, Yarway has recognized that the only way to truly control product quality is to “do it yourself.” Therefore, all components of every product are manufactured to Yarway’s strictest specifications. Along with this single source responsibility also comes renewed vigor in making certain that process industry needs are met in the most expedient way possible. Yarway has a proactive business philosophy … anticipate customer needs, offer technical advice, help solve problems. With this vision in mind, Yarway offers its Magnetic Liquid Level Gage product line to the process industry. These liquid level gauges offer more versatility, greater durability, more features and more options than any other system on the market today. See why Yarway is the magnetic gage of choice for liquid level monitoring in today’s modern processing operations.
Yarway Probes and Probe Fittings
(Click here for brochure)	Features  These probes can be mounted directly to the pressure vessel or column. The probes are brazed welded stainless steel HP and IP electrode with zirconia insulator (3000 psig @ saturation, up to 1000°F [207 barg @ saturation, up to 532°C]) or threaded stainless steel LP electrode with Teflon® insulator (850 psig @ 525°F [58 barg @ 274°C]). Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to meet increasing demand for a reliable, cost effective means of sensing water in various applications. Specifications  HP Probe Brazed stainless steel with zirconia insulator 3000 psig @ saturation, up to 1000°F [207 barg @ saturation, up to 532°C] LP Probe Threaded 3/8" NPT stainless steel with Teflon® insulator 850 psig @ 525°F [58 barg @ 274°C] Fittings HP Fittings 11/2" [40 mm] socketweld male adapter 11/2" [40 mm] tee Type "A" Custom fittings with probe adapter LP Fittings 1" [25 mm] socketweld male adapter 11/2" [40 mm] socketweld male adapter Custom fittings with probe adapter
Yarway Series 1001 Electronic Level Indication
	Features The Yarway Series 1001 single probe alarm system represents the latest advancement in electronic level indication. Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to meet increasing demand for a reliable, cost effective means of sensing water in various applications. The probe can be mounted directly to the pressure vessel or column. The probes are brazed stainless steel HP electrode with zirconia insulator (3000 psig @ saturation, up to 1000°F [207 barg @ saturation, up to 532°C]) or threaded stainless steel LP electrode with Teflon® insulator (850 psig @ 525°F [58 barg @ 274°C]). The Series 1001 is a direct replacement for mechanical float switches. Local LED indication of water level provides either redundant or primary visual verification.
Yarway Series 1002 Electronic Level Indication
	Features The Yarway Series 1002 two probe alarm system represents the latest advancement in electronic level indication. Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to meet increasing demand for a reliable, cost effective means of sensing water in various applications. The probes can be mounted directly to the pressure vessel or column. The probes are brazed stainless steel HP and IP electrode with zirconia insulator (3000 psig @ saturation, up to 1000°F [207 barg @ saturation, up to 532°C]) or threaded stainless steel LP electrode with Teflon® insulator (850 psig @ 525°F [58 barg @ 274°C]). The Series 1002 is a direct replacement for mechanical float switches. Local LED indication of water level in a Type 4X/IP66 enclosure provides primary visual verification.
Yarway Series 1004 Electronic Level Indication
	Features The Yarway Series 1004  three or four probe alarm system represents the latest advancement in electronic level indication.  Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to meet increasing demand for a reliable, cost effective means of sensing water in various applications. The probes can be mounted directly to the pressure vessel or column. The probes are welded stainless steel HP and IP electrode with zirconia insulator (3000 psig @ saturation, up to 1000°F [207 barg @ saturation, up to 649°C]) or threaded stainless steel LP electrode with Teflon® insulator (850 psig @ 525°F [58 barg @ 274°C]). The Series 1004 is a direct replacement for mechanical float switches. Local LED indication of water level in a Type 4X/IP66 enclosure provides either redundant logic or primary visual verification.
Yarway Series 2000 Electronic Level Indication
	Features The Yarway Series 2000 twelve probe alarm system represents the latest advancement in electronic level indication. Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to meet increasing demand for a reliable, cost effective means of sensing water in various applications. The probes can be mounted directly to the pressure vessel or column. The probes are brazed stainless steel HP and IP electrode with zirconia insulator (3000 psig @ saturation, up to 1000ºF [207 barg @ saturation, up to 532°C]) or threaded stainless steel LP electrode with PTFE (Teflon®) insulator (850 psig @ 525ºF [58 barg @ 274°C]). The Series 2000 was developed for basic detection, display and switching. The Series 2000 consists of three major components: the column with probes, the detection and verification (D & V) unit and the remote display. The number of probes can be selected and spaced to indicate liquid level through a desired range. The column is custom manufactured to provide the most accurate indication for any application. Independent detection circuitry for each probe allows selecting relay output for alarms or trips. Green indication is standard on the printed circuit board within the Type 4X/IP66 D & V enclosure. Bright red and green indicator for the control room or locally mounted on the D & V enclosure door is optional.
Yarway Series 3000 Electronic Level Indication
(Note: Optional Door Mounted Red/Green LED Display Shown) Typical applications  • Boiler Drum Level  • Equipment Drains (Desuperheaters,   Control Valves, Sootblower Systems)  • Receiver Tanks (Condenser, Water   Tank, Deaerator)  • Flash Tanks, Feedwater Heaters	Features The Yarway Series 3000 five probe and above alarm system represents the latest advancement in electronic level indication. The 3000 Series has upgraded internal diagnostics for monitor clock faults, power supply faults and level fault. Based on the conductivity probe technology now widely accepted in the industry, it was specially designed to meet increasing demand for a reliable, cost effective means of sensing water in various applications. The probes can be mounted directly to the pressure vessel or column. The probes are welded stainless steel HP and IP electrode with zirconia insulator (3000 psig @ saturation, up to 1200ºF [207 barg @ saturation, up to 649°C]) or threaded stainless steel LP electrode with Teflon® insulator (850 psig @ 525ºF [58 barg @ 274°C]). The Series 3000 consists of three major components: the column with probes, the detection and verification unit and the remote display. The number of probes can be selected and spaced to indicate liquid level through a desired range. The column is custom manufactured to provide the most accurate indication for any application. Independent detection circuitry for each probe allows selecting relay output for alarms or trips. Local indication is standard within the Type 4X/IP65 D&V enclosure. Bright red and green indicator for the control room is standard.
Yarway 4300 Series TempLow® Steam Desuperheater
	Features and Benefits  For precise and economical control of steam temperature, the Yarway probe-type TempLow® desuperheater automatically introduces cooling water into steam flow in response to a pneumatic or electric control signal. The Yarway desuperheater represents a major advance in the design of this type or equipment. It has an unusually high turndown ratio - double that of units previously available. This permits its use in systems with wide fluctuations in steam flow rate. Small enough to mount through a 3-inch (NW 80) flange in the steam line, it includes features previously found only in larger, more space- consuming desuperheater units.  Water pressure 50 to 1600 psi [3.4 to 110 bar] above steam pressure is employed to generate thin-film, conical sprays which are injected into the steam flow through a series of vortex spray nozzles. The fine sprays evaporate rapidly in the steam, thereby minimizing the tendency for spray water to accumulate in the line. A separate water control valve is unnecessary because water flow control is a function of the desuperheater itself. Easy Installation  • Installation in straight, vertical or horizontal pipe.  • Minimal headroom is required for mounting the unit in line.  • Only standard connections are involved for all sizes: 1-inch [NW 25] water; 3-inch [NW 80] steam.  • Few components are required.  • No atomizing steam or pipeliners (which complicate installation) are required.  • Only 15 feet of straight run piping down stream.
Yarway Remote Liquid Level Indicator
	Features and benefits  • Remote reading Transfers hard-to-see liquid level readings from inaccessible points down to eye level. • Continuous indication The primary sensing device is operated by the liquid in the boiler itself.  • Foolproof The actuating diaphragm can withstand high unbalanced pressure.  • Complete It can be linked with a control module that actuates sound and light alarm accessories to provide a complete indicating and controlling system. • Density compensation For changes in density at various operation pressures - 0 to 3000 psi [0 to 207 bar].  • No mechanical linkages Located outside the pressure zone, the indicating system receives its signal through a magnetic coupling