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Superior Turbine Tripping Reliability
The Elliott Pos-E-Stop 203 Trip Block is a technological leap forward in the control of trip valves for steam turbines, hot gas expanders and similar power applications in emergency situations such as overspeed, high vibration or process upset. The Pos-E-Stop Trip Block's flexible "two-out-of-three" logic provides a significantly higher degree of tripping reliability than single or paired solenoid designs, and its best in class response time reduces the tripping interval for enhanced safety. And, the Pos-E-Stop Trip Block has the ability to interface with the master plant control or EDS system.
Features and Benefits
- Improved trip system reliability
- Best in class response time with reduced tripping interval
- Increased availability
- On-line test capability without defeating trip protection
- On-line replacement of critical components without defeating trip protection
- Continuous on-line monitoring of solenoids and valve positions
- Elimination of isolation valves reduces risk of operator error
- Enables trip system standardization across the plant
- Easy to install; simplifies most piping layouts
- Meets hazardous area classifications
- Meets applicable CE directives
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Series BICV Brass Inline Check Valve -- Economical, Spring-Loaded for Fast Seating
Series FPV Flap Check Valve -- Wafer Style 4" to 8", PVC Construction
Series SCV Spring Check Valve -- PVC or CPVC, True Union, Compact Design
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- with double sided pipe connections
- with screw-in spigot
- standard with Viton-seal and one bar opening pressure
- other variations according to customer requirements
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H400 SERIES
FEATURES
316 St.St. End Brass Construction
Moderate Pressure Characteristics (up to 3000 psi)
Compact Design
Interchangeable Parts
Variable fixed cracking-pressure springs
HAM-LET LET-LOK®, Male &
Female NPT, and HTC® Face-Seal Bead Ends
GENERAL
The H400 Series is a compact design for
instumentation panels and systems, and provides
an accurate operating point. H400 valves are
normally closed. When differential pressure
between inlet and outlet is higher than the set
pressure of the spring, the loaded poppet will move
backwards and will provide a free passage of flow
through the valve.
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FEATURES & BENEFITS
Prevents reverse flow where leak-tight shutoff is required
Two styles of high pressure check valves to fit most applications:
Ball Seat Poppet Check Valve - Metal-to-metal seat for rapid cycling or severe environments
Soft Seat Poppet Check Valve - O-ring seat for fast shut-off and reliable seal; standard material is Nitrile. A variety of seal materials are available for even the harshest media.
SPECIFICATIONS
Working Pressure: Up to 60,000 PSI (4140 bar)
Temperature Ratings: Ball Seat Poppet ¨C -420¡ã to 1200¡ãF (-251¡ã to 648¡ãC)
Soft Seat Poppet ¨C -65¡ã to 250¡ãF (-54¡ã to 121¡ãC) (with standard Nitrile seal)
Nominal Cracking Pressure: 15 PSI (1 bar)
Optional cracking pressures up to 100 PSI (7 bar)
End Connections: Female NPT£¬H/P Cone & Thread
TYPICAL MATERIALS
316 Stainless Steel
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Check valves for liquid flows or gas. Sealing through piston or elastomeric seals.
Pressure interval: 105 bar / 210 bar
Temperature interval: -20ºC / 200ºC
Connections: from 1/4" to 3"
Made in several alloys.
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Features:
The steel check valve features a simple, compact, low cost, low pressure drop design. This design also allows for flexibility in function. It can be scaled to any number of standard and non-standard sizes. All steel construction and Viton seals make it a durable and reliable performer while its easy to manufacture design makes it a cost-saver.
Specifications:
-1.5" size
-Scalable diameter
-Up to 250 psi
-All steel construction
-Yellow Zinc Plating
-Viton Seals
-Back flow hole, if needed
-Quantity Discounts
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WITT gas Non-return Valves protect equipment, pipelines and outlet points. Varying from 0.004 bar - 40 bar (0.06 - 580 psi) and flows between 0.010 m³/h - 3.000 m³/h (0.35 - 105925 SCFH) with any wanted connection. Nearly every application will find a solution when gas return has to be prevented.
Some non-return valves are flashback safe in accordance with EN 730 when natural gas and air are mixed, which can be mounted in nay position and do not require gravity.
• Avoid the formation of explosive mixtures in the gas supply
• Varying from 0.004 bar - 40 bar and flows between 0.010 m3/hr - 3.000 m³/hr with any wanted connection
• For all technical gases – wide range of applications
• Low pressure drops - using complex valve assembly with low opening pressures
• No leaks - using of a spring loaded valve assembly with elastomer sealing
• Installation independent of the orientation
• All connections available
• Available in brass or stainless ste
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Since 1900 when Atwood & Morrill Co., Inc. produced its first valve, it has innovated many advances in the valve industry. The company has developed an impressive range of high technology valves and gained a distinguished reputation for product integrity, performance and dependability.
The range includes:
Gate & Globe Valves
Atwood & Morrill - Parallel Slide Gate Valves
Atwood & Morrill - Three Way Globe Valves
Atwood & Morrill - Main Steam Isolation Valves
Atwood & Morrill - Wye Globe Valves
Non Return Valves
Atwood & Morrill - Feed Water Check Valve
Atwood & Morrill - Cold Heat Check Valve
Atwood & Morrill - Freeflow® Check Valve
Atwood & Morrill - Cold Heat Check Valve
Atwood & Morrill - Testable Check Valve
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WITT safety devices are used to protect single cylinders, outlet points or pipelines against gas back feeding and flashback and meet various National and International Standards e.g. EN730. Appropriate checks are made by the certification authorities - BAM, TÜV and Underwriters Laboratories etc. Pressure control systems, points of use and complete energy supply systems (MECS) incorporate these devices.
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FEATURES
316St.St. Construction
Service up to 6000 psi
Set Pressure from 50 psig to 6000 psig
3.50 to 414 bar)
Identifying colored springs for each pressure range
Replaceable springs for a variable pressure range
Available in all pipe threads and LET-LOK® connectors
Sizes: 1/4" or 6mm
GENERAL
H900-HP is a series of relief
valves for high-pressure service.
The valve is normally closed. It will
open when system pressure
reaches the set level. It will re-close
when the system pressure falls
below the set level.
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The PLC series auxiliary valves are direct-acting, factory-set pressure relief valves of the cartridge type that can be supplied with or without a threaded plug. They can also be supplied with housings to facilitate in-line installation. PLC valves are intended primarily to act as combined pressure-relief and anti-cavitation valves - otherwise known as port relief valves - in the service ports of our directional valves. However, they can also be used to advantage in other situations where pressure relief valves in this size range are required. Indeed, PLC cartridge valves are purchased in great quantities by several of the world%u2019s leading pump and transmission manufacturers.
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Pilot-operated check valves of the series CP allow free flow in one direction.
The counter-flow direction is blocked. By applying the pilot pressure, the poppet can be lifted from its seat against the pressure. Thus flow in the counter-direction is also possible. There are 1 and 2 stage poppets available with pilot ratios of 1 : 5 and 1 : 40, to suit different operating conditions.
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The check and pre-fill valves type F utilize a spring pre-loaded valve head.
The check valves type F enable free flow in one direction and block the flow in the opposite direction.
This valve is used as a high flow valve (check valve with hydraulic release) in top ram presses for quickly draining and replenishing press cylinders during opening and closing in rapid traverse mode. The smaller sizes may be equipped with a pre-reliefe device as an option to prevent pressure surges during decompression (high volume and high pressure surge).
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FEATURES
316St.St. Construction
Service 10-225 psi
One spring for all set pressure range
Available in all pipe threads and LET-LOK® connectors
Sizes: 1/4" or 6mm
GENERAL
The H900 series is a relief valves for low pressure service.
The valve is normally closed. It will open when system pressure
reaches the set level. It will re-close when the system pressure
falls below the set level.
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Sarasin-RSBD
Pressure Safety Devices
Sarasin RSBD manufactures and supplies a comprehensive range of pressure safety valves and safety devices. The variety of products covers all industrial applications in which protective action against overpressure is required.
Changeover Valves
Sarasin-RSBD R Type Changeover valve
Sarasin-RSBD DV Type Changeover valve
Sarasin-RSBD Starvalve RS type Changeover
Safety Relief Valves
Sarasin RSBD & SEBIM Safety Relief Valves
Sarasin-RSBD 71 Series Full Nozzle Pilot Operated Safety Relief valve
Sarasin-RSBD 78 Series Semi Nozzle Pilot Operated Safety Relief valve
Sarasin-RSBD 86 Series High Performance Full Nozzle Pilot Operated Safety Relief valve
Sarasin-RSBD 9 Series Portable Safety valve
Sarasin-RSBD MBP Atmospheric Relief valve
Sarasin-RSBD A7000 Series Safety Relief valve
Sarasin-RSBD Starflow S5
Sarasin RSBD - 71 Series Portable Pilot Operated Safety Relief valve
Sarasin RSBD - 63 Series Semi Nozzle Safety Relief valve
Starflow P3 Conventional Safety Relief valve
Starflow P5 Conventional Safety valve
Sarasin-RSBD Starflow P4 Balanced Safety Relief valve
Tank Blanketing Systems
Sarasin-RSBD Starblanketer
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Check valves are poppet style elements that allow free flow in one direction while preventing flow in the reverse direction. They can be used to isolate portions of a hydraulic circuit or to provide a free flow path around a restrictive valve.
Types:
Nose to Side Checks
Soft Seal Check Valve
Side to Nose Check Valve
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Pressure Relief Valve type LV / LNV
The safe and economic solution to protect your pump and plant against over-pressure.
Function:
The pneumatic Pinch Valve will be pressurized through the pressure relief section by a minimum differential pressure of 2 bar air supply over medium pressure. When the medium pressure in the pipeline increases, the Pinch Valve start to open and the overpressure passes trough the bypass and the Pinch Valve.
The rising and falling pressures can be controlled over pressure switches.
Type LV (if control air is available) and Type LNV (if control air is not available) are especially designed to handle products with solids, paste and fibers.
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High Pressure Relief Valve up to 30,000 PSI
FEATURES & BENEFITS
Max. Working Pressure: Up to 30,000 PSI (138MPa)
Temperature Rating: -100 to 450°F (-73° to 232°C)
End Connections: Tubing Cone & Thread
TYPICAL APPLICATIONS
Pressure gas systems
Cryogenic systems
Petrochemical applications
TYPICAL MATERIALS
316 Stainless Steel
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Spring-loaded, direct action relief valves for venting excess gases from pipelines and other equipment.
• Individual opening pressure from 5 mbar to 100 bar
• Compact size
• Installation independent of the orientation
• Protective dust cap
• Range of inlet connections
• Available in brass or stainless steel
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Sarasin RSBD manufactures and supplies a comprehensive range of pressure safety valves and safety devices. The variety of products covers all industrial applications in which protective action against overpressure is required.
Sebim Nuclear Valves
Sebim manufactures a wide range of nuclear safety relief valves and accessories. These products are used worldwide and adapted to individual customers’ specific requirements.
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PKV-06 stainless steel pilot controlled non-return valve
Application
PKV-06 is used as a static load holder.
Specifications
The PKV-06 valve, made of stainless steel W.St.1.4301, allows unrestricted flow from V to C ports and blocks flows in the opposite direction until pressure is applied on the pilot port.
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Type "DELTA"
- With Borosilikat sightglass (DELTA SG)
- Heating jacket on request
- PFA/FEP oder PVDF-lined
- Temperature Tmax = 423K (150ºC)
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BUTTERFLY CHECK VALVE-COMBINED
1. FEATURES
This valve is operated by the actuator of cylinder,motor or etc for the
butterfly valve function.
If this valve is installed in front of pump,this valve can be used for
controling flux, however,at the time of emergency or electricity failure this
valve can be converted to check valve.
2. DESCRIPTION
-. SERVICE TEMP' : -20°C~+150°C
-. SERVICE CONDITION : SEA WATER , OIL , ETC
-. FLANGE RATING : ANSI , AWWA , DIN , JIS(KS) , ETC.
-. SIZE : 50A(2")~4000A(160")
-. FLANGE TYPE : FLANGE
-. ACTUATOR : CYLINDER , MOTOR , ETC.
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The Check Valves permit flow in one direction only. The operation of the check valve is based on the movement of a small disc; the disc shifts within the housing as the pressure differential changes from forward to reverse. A flat surface on one side of the disc seals off flow, while the other side allows flow to pass.
Air Logic Check Valves offer low “cracking pressures”, less than 10” H2O, and a minimal differential for forward flow. Models are available with 10-32 UNF threads or barbs for 1/16” and 1/8” I.D. flexible tubing. Maximum pressure is 75 PSI.
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True Union Ball Check Valves
Y-Check Valves
Spring-Loaded Y-Check Valves
Swing Check Valves
Wafer Check Valves
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Global Manufacturer of Hydraulic Check, Relief, Flow Control and Directional Control Valves along with Quick Release Hose Couplings. Check Valve sizes to 2" and up to 6000 psi (414 bar)working pressure. Steel and Stainless Steel materials are standard with other materials available.
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