Boiler House Equipment

Boiler house equipment is used in industrial steam generation systems for level control, water quality management, blowdown, sampling, feedwater handling, and heat recovery. Selection should be based on boiler operating pressure, saturation temperature, steam flowrate, condensate return rate, feedwater quality, safety requirements, and material compatibility with boiler water, steam, and chemical treatment media.

Bottom and surface blowdown valves remove sludge, precipitated salts, and concentrated dissolved solids from the steam boiler. In continuous blowdown applications, TDS conductivity control is linked to automatic discharge to maintain dissolved solids within operating limits. Available configurations include DIN design, flanged connections, PN40 pressure rating, and body material 1.0619+N for blowdown valve service.

Gauge glasses, level electrodes, and level controllers form part of the low-water and lockout protection system. Selection should consider boiler pressure, operating temperature, indication type—reflex or transparent—installation orientation, and compatibility with the safety control circuit. Visibility, pressure containment, isolation arrangement, and maintenance access should also be evaluated.

Blowdown vessels, sample coolers, and flash steam recovery vessels are used for controlled depressurization, cooling, and energy recovery from boiler water or condensate streams. Key selection parameters include DN, PN or ANSI Class, thermal load, flash pressure, reject water flowrate, discharge temperature to drain, and safe sampling requirements. Pressure letdown, venting, and downstream thermal shock conditions should be checked during sizing.

Deaerators and feedwater tanks condition water before boiler entry by reducing dissolved O₂ and CO₂, which are associated with corrosion in boilers, condensate systems, and return lines. Maintenance should include inspection of sensors, cleaning of blowdown lines, valve function checks, verification of TDS and turbidity, and operational testing of level instrumentation. Leakage at shut-off valves, fouling in sensing lines, and calibration drift in control devices should be included in routine inspection procedures.

Blowdown Valves

Level Gauges

Blowdown Vessels

Level Electrodes

Conductivity Measuring

Ingress Detecting

Sample Coolers

Flash Vessels

Deaerators

Complementary Equipment

Bottom blowdown valve - STEVI BBD 415 | ARI

Ari-Armaturen

ARI-STEVI BBD 415 – Bottom Blowdown Valve for Steam Boiler Applications The ARI-STEVI BBD 415 is specified for periodic bottom blowdown and sludge removal in industrial steam boilers. The valve is operated via pneumatic actuator or manual lever, designed for short-duration opening to generate a flow pulse that removes sediment from the boiler bottom....

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Level Indicator - Reflex Type - 00000142 - Reflex Level Gauge Mod. RBF NX - NY | Fival Srl

Fival Srl

Fival RBF NX / NY – Reflex Type Level Gauge The Fival RBF NX/NY is a reflex glass level gauge designed for direct visual indication of liquid level in boilers, pressure vessels, and industrial tanks. Indication is based on the refractive index difference between liquid and vapor phases: the liquid zone appears dark, while the vapor or gas zone appears...

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Level Indicators - Reflex Type - 00000143 - Reflex Level Gauge Mod. RMF NX - NY | Fival Srl

Fival Srl

Fival RMF NX / NY – Reflex Multi-Section Level Gauge The Fival RMF NX/NY is a reflex-type visual level gauge designed for direct indication of liquid and vapor phases in pressure vessels, steam boilers, and process auxiliary circuits. The multi-section borosilicate glass construction is specified when a longer visible length is required than can be...

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Level Indicators - Reflex Type - 00000144 - Reflex Level Gauge Mod. NX - NY | Fival Srl

Fival Srl

Fival RAF NX / NY – Reflex Level Gauge The Fival RAF NX/NY is an optical level gauge utilizing Reflex ribbed borosilicate glass for direct local indication of liquid level in boilers, pressure vessels, and auxiliary process lines. Indication is based on the differing optical properties of gas and liquid phases on the Reflex glass surface. Construction...

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Level Indicators - Reflex Type - 00000166 - Welded Level Gauge Mod. RJF | Fival Srl

Fival Srl

Fival RJF – Welded Reflex Level Gauge Fival RJF is a welded reflex level gauge with prismatic Reflex borosilicate glass, designed for direct local level indication on vessel, boiler, or tank walls. It does not use an external column with isolating valves but is mechanically integrated into the equipment shell. The technical drawing refers to it as REFLEX...

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Level Indicators - Reflex Type - 00000167 - R borosilcate gauges | Fival Srl

Fival Srl

Fival R01 – Reflex Borosilicate Gauge Glass, Ribbed Type The Fival R01 is a ribbed borosilicate glass spare part for Reflex-type level gauges. It is not a complete sight glass assembly; it serves as the optical element installed in the gauge chamber, enabling direct visual indication of liquid and vapor phases. Operating Principle The Reflex surface...

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Level Indicators - Transparent Type - 00000145 - Tubolar Level Gauge Mod. BV-NX | Fival Srl

Fival Srl

Fival BV-NX – Tubular Level Gauge with Transparent Glass The Fival BV-NX is a local visual level indicator for liquids in tanks, auxiliary circuit vessels, and boiler plant installations. The liquid level is read directly through a borosilicate glass tube, requiring no electrical supply or signal converter. This product is referenced as a transparent...

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Level Indicators - Transparent Type - 00000146 - Trasparent Level Gauge Mod. TMF NX | Fival Srl

Fival Srl

Fival TMF-NX – Transparent Level Gauge Indicator The Fival TMF-NX is a visual level gauge equipped with borosilicate transparent glasses, designed for direct local level indication on pressure vessels, steam boilers, condensate tanks, and auxiliary process circuits. The transparent construction allows direct observation of the process liquid through the...

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Level Indicators - Transparent Type - 00000147 - Trasparent Level Gauge Mod. TAF NX - NY | Fival Srl

Fival Srl

Fival TAF NX / NY – Transparent Level Gauge Fival TAF NX/NY is a transparent glass level gauge designed for local visual monitoring of liquid levels in pressure vessels, steam boilers, condensate tanks, and auxiliary process circuits. The transparent construction allows direct observation of the liquid column, which is essential for level verification as...

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Level Indicators - Transparent Type - 00000148 - Welded Level Guge Mod. TJF | Fival Srl

Fival Srl

Fival TJF – Transparent Welded Level Gauge The Fival TJF is a transparent type welded level gauge designed for direct mounting on vessel or boiler walls. It is specified where an external level column with isolating valves is not required, providing local visual indication directly on the equipment shell. The technical drawing refers to this unit as...

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Level Indicators - Transparent Type - 00000168 - T Borosilicate Gauges | Fival Srl

Fival Srl

Fival T01 – Borosilicate Transparent Glass for Level Gauges The Fival T01 is a borosilicate transparent glass spare part for visual level gauges. It is not a complete gauge assembly; it is the glass element installed in transparent level gauges for direct observation of the liquid column. The T01 is intended for replacement in existing gauge bodies and is...

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Level Indicators - 00000155 - Flameproof & Watertight Illumination Lamp - E50W | Fival Srl

Fival Srl

Fival E50W – Explosion-Proof and Watertight Luminaire for Level Gauge Applications The Fival E50W is an auxiliary lighting unit designed for transparent level gauges in process environments where low ambient light, restricted access, or boiler house conditions impede direct level reading. The luminaire mounts onto the gauge’s light diffuser and does not...

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Level Indicators - Magnetic level gauge - 00000177 - Magnetic Level Gauge | Fival Srl

Fival Srl

Fival Magnetic Level Gauge – Magnetic Level Indicator The Fival magnetic level gauge is designed for local level indication in tanks, vessels, and boiler circuits where direct contact between operator and process fluid is undesirable. The assembly consists of an external float chamber, a magnet-equipped float, and a side-mounted bi-color indicator with...

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Level Indicators - Level Cock Gauge - 00000159 - Packing Sleeves | Fival Srl

Fival Srl

Fival F16 – Replacement Packing Ring for Level Gauge Valves The Fival F16 is a replacement sealing ring designed for use in the gland assembly of level gauge valves. It provides controlled compression around moving or stationary stems, ensuring leak-tight operation for water, steam, or process fluids. The F16 is referenced as a replacement packing ring...

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Level Indicators - Level Cock Gauge - 00000160 - Level Cock Gauge Type NX PN40 | Fival Srl

Fival Srl

Fival NX PN40 – Gauge Glass Isolation Valves for Level Indicators The Fival NX PN40 series comprises upper and lower isolation valves for visual level gauges on steam boilers, pressure vessels, and auxiliary water or condensate circuits. These valves enable isolation of the gauge glass from the vessel, safe draining of the column, and facilitate...

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Level Indicators - Level Cock Gauge - 00000165 - Level Cock Gauge Type NY PN100 | Fival Srl

Fival Srl

Fival NY PN100 – Gauge Glass Isolation Cocks for Level Indicators Fival NY PN100 are upper and lower isolation cocks designed for gauge glass assemblies on steam boilers and pressure vessels. These valves enable isolation of the level column, safe draining of the gauge glass, and controlled intervention for glass, gasket, or packing replacement. The...

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Bottom Blowdown Valve | Gestra

Gestra

GESTRA Bottom Blowdown Valve The GESTRA bottom blowdown valve is designed for intermittent removal of sludge, salts, and non-metallic solids from the lowest point of steam boilers. Operation is based on rapid opening and closing; an opening time of approximately 2–3 seconds generates a high instantaneous flow and suction at the boiler bottom. Prolonged...

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Continuous Blowdown Valve | Gestra

Gestra

GESTRA Surface Blowdown Valve The GESTRA continuous surface blowdown valve is installed on the surface blowdown line of steam boilers to control TDS (Total Dissolved Solids) and conductivity levels. Continuous evaporation increases dissolved solids in boiler water; if not removed, this leads to scale formation and increases the risk of carry-over into the...

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Level Electrodes - SPECTORcompact | Gestra

Gestra

GESTRA SPECTORcompact – Level Electrodes with Integrated Evaluation The SPECTORcompact series is applied in steam boilers, pressurized hot water systems, condensate tanks, and feedwater vessels. Unlike systems with separate electronic controllers, signal evaluation is integrated into the electrode head, reducing external modules in the control panel....

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Level Controllers - SPECTORmodul | Gestra

Gestra

GESTRA SPECTORmodul – Boiler Level Controllers The GESTRA SPECTORmodul level controllers are designed for use in steam boilers, pressurized hot water systems, condensate tanks, and feedwater tanks. They interface with level electrodes NRG 21 / NRG 26-21 or transmitter NRGT 26, converting the signal to a 0–100% indication of the boiler’s measuring range....

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Level Electrodes (Limiters) - SPECTORconnect | Gestra

Gestra

GESTRA SPECTORconnect – Level Electrode Limiters The GESTRA SPECTORconnect level electrodes are designed for use in steam boilers and hot water systems as level limiting devices. Measurement is based on water conductivity: the electrode rod is detected as immersed or non-immersed, with the switching point determined by rod length. Operating Versions NRG...

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Level Electrodes (Limiters) - SPECTORmodul | Gestra

Gestra

GESTRA SPECTORmodul – Level Electrode Limiters The GESTRA SPECTORmodul series comprises level limiting devices for steam boilers and pressurized hot water systems. The range includes low-level electrodes NRG 16-50 / 17-50 / 19-50 / 111-50 with electronic switch NRS 1-50, and high-level electrodes NRG 16-51 / 17-51 / 19-51 / 111-51 with NRS 1-51. Operating...

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Turbidity Detector | Gestra

Gestra

GESTRA TURBISCOPE OR 52 – Oil and Turbidity Detector The GESTRA OR 52-5 / OR 52-6 is designed for continuous monitoring of transparent liquids, primarily in condensate return lines, feedwater, and hot water circuits. Its function is early detection of insoluble particles, oil, or grease ingress before contaminated condensate returns to the boiler....

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Total Dissolved Solids (TDS) Electrodes - SPECTORcompact | Gestra

Gestra

GESTRA SPECTORcompact – Conductivity Electrodes for TDS Measurement The GESTRA SPECTORcompact series is designed for monitoring boiler water conductivity and controlling continuous surface blowdown. TDS (Total Dissolved Solids) is measured indirectly via electrical conductivity, as dissolved solids increase with steam generation and concentrate in boiler...

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Showing 1-24 of 47 item(s)

Boiler House Equipment

Bottom blowdown valve - STEVI BBD 415 | ARI

Level Indicator - Reflex Type - 00000142 - Reflex Level Gauge Mod. RBF NX - NY | Fival Srl

Level Indicators - Reflex Type - 00000143 - Reflex Level Gauge Mod. RMF NX - NY | Fival Srl

Level Indicators - Reflex Type - 00000144 - Reflex Level Gauge Mod. NX - NY | Fival Srl

Level Indicators - Reflex Type - 00000166 - Welded Level Gauge Mod. RJF | Fival Srl

Level Indicators - Reflex Type - 00000167 - R borosilcate gauges | Fival Srl

Level Indicators - Transparent Type - 00000145 - Tubolar Level Gauge Mod. BV-NX | Fival Srl

Level Indicators - Transparent Type - 00000146 - Trasparent Level Gauge Mod. TMF NX | Fival Srl

Level Indicators - Transparent Type - 00000147 - Trasparent Level Gauge Mod. TAF NX - NY | Fival Srl

Level Indicators - Transparent Type - 00000148 - Welded Level Guge Mod. TJF | Fival Srl

Level Indicators - Transparent Type - 00000168 - T Borosilicate Gauges | Fival Srl

Level Indicators - 00000155 - Flameproof & Watertight Illumination Lamp - E50W | Fival Srl

Level Indicators - Magnetic level gauge - 00000177 - Magnetic Level Gauge | Fival Srl

Level Indicators - Level Cock Gauge - 00000159 - Packing Sleeves | Fival Srl

Level Indicators - Level Cock Gauge - 00000160 - Level Cock Gauge Type NX PN40 | Fival Srl

Level Indicators - Level Cock Gauge - 00000165 - Level Cock Gauge Type NY PN100 | Fival Srl

Bottom Blowdown Valve | Gestra

Continuous Blowdown Valve | Gestra

Level Electrodes - SPECTORcompact | Gestra

Level Controllers - SPECTORmodul | Gestra

Level Electrodes (Limiters) - SPECTORconnect | Gestra

Level Electrodes (Limiters) - SPECTORmodul | Gestra

Turbidity Detector | Gestra

Total Dissolved Solids (TDS) Electrodes - SPECTORcompact | Gestra

Boiler House Equipment

Athens Department

Thessaloniki Department