Configuration

Construction with bolted bonnet.

Body materials:

• Carbon steel: 1.0460, 1.0619, 1.5415, 1.5419
• Alloy steel: 1.7335, 1.7357
• Cold resisting steel: 1.0566, 1.7219,
• Stainless steel: 1.4571, 1.4581
• Stainless steel low temperature: 1.4308, 1.4571
• DN 10-200, PN up to 160

Connections:

• Flanges
• Butt weld ends
• Socket weld ends
• Other connections

Features

• Straight bonnet
• Die-forged valve body and bonnet
• Shut-off disc of Throttle disc
• Outside screw and yoke
• Position indicator if required
• Turning and rising stem

Design Highlights

• Die-forged valve body an bonnet
  Free from porosity and shrink holes
• Seats are hardfaced or welded on
  Extremely resistant to wear
• Body-bonnet connection male and female
  Sealing blow out proof
• Body and bonnet in two separate pieces with bolted connection
  To ease maintenance work, e.g. regrinding of the body seats

Manufacturer

PERSTA is a market leader in the high performance forged steel isolating valves. Established manufacturer, part of the Siepmann Group with their own forging shop. Especially the high pressure globe and gate valves are a benchmark in the valve industry with a flexible production process.

• Globe valves
• Gate valves
• Check valves
• Bellow seal valves
• Special valves
• Valves for super critical boilers

Configuration

Construction bonnet less and pressure seal bonnet.

Body materials:

• Carbon steel: 1.5415, 1.0460
• Alloy steel: 1.4901, 1.4903, 1.7335, 1.7383, 1.6368
• Stainless steel: 1.4571
• Other materials on request
• DN 10-65, PN up to 630, DN 65-250, PN up to 500

Connections:

• Flanges
• Butt weld ends
• Socket weld ends
• Other connections

Features

• Disc and stem in one piece
• Die-forged valve body and bonnet
• Non-turning, rising stem
• Position indicator / anti-rotation device
• Throttle disc
• > DN20 with an integral actuator flange
• HD2000 valves also available in angle pattern

Design Highlights

• Body seat: tapered seat welded on integratedly with stellite
  No pressed in or screwed seat ring, therefore no crevice corrosion or loosening
• Disc and stem in one piece; up from +570°C with stellited tapered seat
  Damage between disc and stem due to high flowrates is prevented
• Sealing to the outside only by means of the gland packing
  No bonnet gasket, therefore reduction of possible leakage areas
• Body and bonnet in two separate pieces with bolted bonnet
  To ease maintenance work, e.g. regrinding of the body seats
• Yoke sleeve made of bronze
  Good emergency running properties
• Cup springs above the upper needle bearing
  To maintain the necessary closing forces when dimensions change between stem and yoke arm due to thermal fluctuation

Manufacturer

PERSTA is a market leader in the high performance forged steel isolating valves. Established manufacturer, part of the Siepmann Group with their own forging shop. Especially the high pressure globe and gate valves are a benchmark in the valve industry with a flexible production process.

• Globe valves
• Gate valves
• Check valves
• Bellow seal valves
• Special valves
• Valves for super critical boilers

Configuration

Valves with stuffing box or bellows sealed pressure seal bonnet or blank flange.

• DN 50-1000
• PN up to 40, DN 50-300
• PN up to 100, DN 50-300
• PN 160, DN 50-700
• PN 100-630 (PD 10-63), DN 10-50
• PN up to 100 (Class 800)

Body materials:

• Carbon steel: 1.0425, 1.0460, 1.5415
• Alloy steel: 1.4901, 1.4903, 1.6368, 1.7335, 1.7383,
• Stainless steel: 1.4571
• Stainless steel low temperature: 1.4308
• Other materials on request

Connections:

• Flanges
• Butt weld ends
• Socket weld ends ≤ DN 50
• ASME on request

Features

• "Split wedge" construction
• Rail guided discs
• Die-forged body and bonnet
• Non-turning, rising stem
• Spindelnut with bearing
• Easy assembly of an E-actuator
• Pressure sealed bonnet acc. VGB-guidelines

Design Highlights

• Main valve body is one-piece die-forged incorporating the bonnet flange and the guide for the shut-off device
  Die-forged parts, compared with cast steel parts are generally free from porosity and shrink holes. The special of the valve body minimizes the existance of welding seams.
• Valve body equipped with guiding system
  Compared to parallel slide valve an almost friction free stroke
• Hard faced seats (app. 35-37 HRC)
  Extremely resistant to wear
• Full bore, except DN 65/50 and DN 125/100
  No reduction in seat area
• Hammer head connection between wedge and stem
  The wedges are able to move parallel to the axis of the pipeline within the guiding groove. This protects the stem against bending moments
• Pressure sealing bonnet
  Best possible sealing function

Manufacturer

PERSTA is a market leader in the high performance forged steel isolating valves. Established manufacturer, part of the Siepmann Group with their own forging shop. Especially the high pressure globe and gate valves are a benchmark in the valve industry with a flexible production process.

• Globe valves
• Gate valves
• Check valves
• Bellow seal valves
• Special valves
• Valves for super critical boilers

Advanced Valve Solutions provides Drain Valves for standard and special constructions for power plants and industrial systems, which are employed in pressure and flow reduction applications. The body, inner trim, valve seat and seals can be selected from a whole range of variants.

Configuration

• High- and lowpressure controlvalves for water and steam applications
• Radial- and Axialvalves for compressor station
• Turbine drain valves
• Injection control valves
• Drainvalves
• Blow down valves

Features

• DN15 - DN1000, 1/2" - 40"
• PN10 - PN500, 150# - 2500#
• High quality forged- or castings
• Z-type, angle or straight pattern
• BW / flange connection according DIN or ANSI
• + balanced plug / - balanced plug / pilot plug
• Temperatures up to 600°C
• Singe- or multistage construction
• Seat: pressed, screwed, welded, clamped
• Plug: parabolic, perforated cage, perforated plug, V-port
• DIN
• ANSI
• Pneumatic / electric / hydraulic

Benefits

• Multi stage cavitation free control
• High rangeability
• Superior leackage class
• Easy maintenance

Manufacturer

HORA is a German manufacturer of high pressure steam and water control valves covering all control systems in modern power plants. Together with a very good R&D department we are continuously seeking for better solutions and controllability of the steam water cycle. Flexible and dedicated performance company, supplying all tailor-made products.

• Control valves
• Steam conditioning valves
• Feed water Control valves
• Water injection valves
• Desuperheater valves
• Turbine bypass valves
• Turbine shut-off valves
• Automatic recirculation valves (Pump protection)
• Valves for super critical boilers

To avoid damage within a centrifugal pump, the need to ensure a continuous minimum flow can be established with the use of a pump protection or automatic recirculation valve. A minimum flow aids the cooling of the bearings and the seals within the pump and reduces the potential for a continuous stop/start situation. The valve maintains a minimum flow through the pump, whilst also acting as a non- return check valve for the pump.

The service friendly pump protection valves from HORA will be custom made depending on the pump parameters and are available as two different types. As a self-acting mechanism applicable at pressures up to 200 bar, or as an actuated valve which is recommended at pressures > 200 bar.

Configuration

Applicable for:

• LP feedwater pumps
• LP process pumps
• Condensate pumps

Types:

• < 200 bar pressure differential, full mechanical self acting pump protection valve
• > 200 bar pressure differential, a motorised on/off valves or multi stage control valve

Features

• Additional Back Pressure Regulation possible
• Anti cavitation trim
• High quality forged- or castings
• Z-type, angle or straight pattern
• BW / flange connection according DIN or ANSI
• Pumpspecific
• Single- or multistage construction
• DIN
• ANSI
• Pneumatic / electric

Benefits

• No requirement for an external actuator
• Completely mechanical construction
• Maintenance friendly
• Built in check valve
• Horizontal and vertical mounting possible

Manufacturer

HORA is a German manufacturer of high pressure steam and water control valves covering all control systems in modern power plants. Together with a very good R&D department we are continuously seeking for better solutions and controllability of the steam water cycle. Flexible and dedicated performance company, supplying all tailor-made products.

• Control valves
• Steam conditioning valves
• Feed water Control valves
• Water injection valves
• Desuperheater valves
• Turbine bypass valves
• Turbine shut-off valves
• Automatic recirculation valves (Pump protection)
• Valves for super critical boilers

Steam cooling is the opposite process of super heating and crucial in several processes. HORA manufactures a complete package of different types of desuperheaters, every type with its particular properties. HORA precisely determine the CFD (Computer Fluid Dynamics) analysis for your application providing the optimum, most cost-effective version. Various products are available are available for this purpose.

Configuration

Applicable for:

• Processsteam
• Intermittent cooling superheater
• Final cooling superheater
• Condensor protection
• Other cooling applications

Configurations:

• Multi stage desuperheater
• Venturi desuperheater
• Desuperheating with atomizing unit
• Static injection lance
• "Cooled desuperheater"

Features

• One piece, forged body (F1, F11, F22 and P91)
• Integrated injection valve
• Single- of multistage internal
• Cavitation free internal
• Due to control unit, avoid cavitation and always maintain an optimum pressure drop over the nozzle

Benefits

• Easy maintenance due to clamped internals
• No separate injection valve necessary
• Anti cavitation trim
• Seat located outside hot area
• No welding connections
• Optimal spray due to optimal pressure drop over injection nozzle
• Thermoshock free!

Manufacturer

HORA is a German manufacturer of high pressure steam and water control valves covering all control systems in modern power plants. Together with a very good R&D department we are continuously seeking for better solutions and controllability of the steam water cycle. Flexible and dedicated performance company, supplying all tailor-made products.

• Control valves
• Steam conditioning valves
• Feed water Control valves
• Water injection valves
• Desuperheater valves
• Turbine bypass valves
• Turbine shut-off valves
• Automatic recirculation valves (Pump protection)
• Valves for super critical boilers

Advanced Valve Solutions provides modular high-pressure and low-pressure control valves for standard and special constructions for power plants and industrial systems, which are employed in pressure and flow reduction applications. The body, inner trim, valve seat and seals can be selected from a whole range of variants.

Configuration

• High- and lowpressure controlvalves for water and steam applications
• Radial- and Axialvalves for compressor station
• Turbine drain valves
• Injection control valves
• Drainvalves
• Blow down valves

Features

• DN15 - DN1000, 1/2" - 40"
• PN10 - PN500, 150# - 2500#
• High quality forged- or castings
• Z-type, angle or straight pattern
• BW / flange connection according DIN or ANSI
• + balanced plug / - balanced plug / pilot plug
• Temperatures up to 600°C
• Singe- or multistage construction
• Seat: pressed, screwed, welded, clamped
• Plug: parabolic, perforated cage, perforated plug, V-port
• DIN
• ANSI
• Pneumatic / electric / hydraulic

Benefits

• Multi stage cavitation free control
• High rangeability
• Superior leackage class
• Easy maintenance

Manufacturer

HORA is a German manufacturer of high pressure steam and water control valves covering all control systems in modern power plants. Together with a very good R&D department we are continuously seeking for better solutions and controllability of the steam water cycle. Flexible and dedicated performance company, supplying all tailor-made products.

• Control valves
• Steam conditioning valves
• Feed water Control valves
• Water injection valves
• Desuperheater valves
• Turbine bypass valves
• Turbine shut-off valves
• Automatic recirculation valves (Pump protection)
• Valves for super critical boilers 

Feed water control valves are one of the most important control components of the water-steam circuit. The valve controls the supply of feed water to the boiler. The valve’s requirements are high. The pressure drop across the valve should be minimized, but still give a l good control characteristic. A main feed water control valve is designed for the total flow of the steam generation at low differential pressures. The start-up valve however, is used for low flows and high pressures.

Advanced Valve Solutions also provides a special design feed water control valve which gives us the opportunity to combine the start-up and main feed water control function in one valve. A decisive cost benefit for our customers!

Configuration

• Main feedwater control
(30-100%)
• Start-up feedwater control
(0-30%)
• Combi feedwater control
(0-100%)

Features

• High quality forged- or castings
• Z-type, angle or straight pattern
• BW / flange connection according DIN or ANSI
• + balanced plug / - balanced plug / pilot plug
• Custom control characteristic
• Singe- or multistage construction
• Seat: clamped
• Plug: parabolic, perforated cage, perforated plug, V-port
• DIN
• ANSI
• Pneumatic / electric

Benefits

• Multi stage cavitation free control
• Number of stages designed for particular application
• Superior rangeability
• Tight shut off
• Easy maintenance
• No separate start up valve needed

Manufacturer

HORA is a German manufacturer of high pressure steam and water control valves covering all control systems in modern power plants. Together with a very good R&D department we are continuously seeking for better solutions and controllability of the steam water cycle. Flexible and dedicated performance company, supplying all tailor-made products.

• Control valves
• Steam conditioning valves
• Feed water Control valves
• Water injection valves
• Desuperheater valves
• Turbine bypass valves
• Turbine shut-off valves
• Automatic recirculation valves (Pump protection)
• Valves for super critical boilers

In the energy markets, for example power stations, paper mills, municipal waste incinerators or within other steam raising plants, the control of steam is of crucial importance. The main requirement is to control both, the pressure and temperature of the steam. Advanced Valve Solutions offers the right solutions: Steam conditioning valves for process and industrial applications. The right solutions depends on parameters as the steam temperature, flow, required cooling water and steam velocity.

Configuration

• Injection through a nozzle
• Proportional injection
• Integrated steam atomizing
• Separate downstream desuperheaters

Features

• High quality forged- or castings
• Z-type, angle or straight pattern
• BW / flange connection according DIN or ANSI
• + balanced plug / - balanced plug / pilot plug
• Custom control characteristic
• Singe- or multistage construction
• Seat: clamped
• Plug: parabolic, perforated cage, perforated plug, V-port
• DIN
• ANSI
• Pneumatic / electric / hydraulic

Benefits

• Very Precise temperature control, over a wide range, capable of cooling close to saturation.
• The spray of cooling water, depending on the main steam flow, is done in a way to avoid thermal shock and to optimize the cooling effort, both quickly and precisely.
• Simple to maintain, due to easy change trims without having to remove the whole valve from the process line.
• Low noise levels, based on an in depth knowledge of the valves and their inherent characteristics.
• The possibility of building a station in accordance to TRD 421 and to use it as a safety device.
• Quick opening and/or closing are standard.

Manufacturer

HORA is a German manufacturer of high pressure steam and water control valves covering all control systems in modern power plants. Together with a very good R&D department we are continuously seeking for better solutions and controllability of the steam water cycle. Flexible and dedicated performance company, supplying all tailor-made products.

• Control valves
• Steam conditioning valves
• Feed water Control valves
• Water injection valves
• Desuperheater valves
• Turbine bypass valves
• Turbine shut-off valves
• Automatic recirculation valves (Pump protection)
• Valves for super critical boilers