Malteax Trading

...L&T Gate & Check Valves Are Designed In Accordance With Key International Standard . 
They Also Meet The Requirements of Major Power And Oil & Gas Industry Standard And Customer Specifactions.

The L&T Pressure Seal Check Valve is engineered for high-pressure, high-temperature applications, commonly found in power plants, oil & gas facilities, and petrochemical industries. Its design ensures reliable backflow prevention and minimal maintenance.

• Size Range: 3" to 42" (80 mm to 1050 mm)

• Pressure Ratings: ASME Class 600 to 4100

• Design Standard: ASME B16.34

• Certifications:

  • CE Marking (Pressure Equipment Directive 2014/68/EU, Annexure III, Module H)

  • ATEX Directive 94/9/EC (Category 2 non-electrical equipment)

• Pressure-Seal Bonnet: Utilizes line pressure to enhance sealing, ensuring integrity at higher operating pressures.

• Hardfacing: Features a 3 mm hardfacing thickness to maintain consistent hot hardness.

• Material Options: Available in cast and forged steels, as well as exotic metallurgies, catering to a variety of applications.

• Bypass Arrangement: Optional feature for over-pressure protection based on customer requirements.

• Digital Traceability: Equipped with ValvTrac™ RFID tagging for reliable digital traceability.

• Power generation systems

• Oil and gas pipelines

• Chemical processing plants

• High-pressure steam and water flow control

Castle Dual Plate Check Valves are light and compact wafer type check valves that are designed for HVAC and general service applications. Dual plate check valves consist of two spring-loaded plates close when the flow decreases, without the necessity of reverse flow.

• Castle Dual Plate Check Valve minimizes the cracking in the valve and reduces pressure drop in the valve.
• Spring loading on the plates assists in the closing of the valve which ensures tight sealing and it minimizes slamming.
• If a Check Valve closes without any reverse flow then water hammer can be eliminated. Since, the Castle Dual Plate Check Valve closes when the velocity of flow is reduced to zero, before the flow gets reversed. Hence, water hammer is eliminated.
• Castle Dual Plate Check Valves are very flexible in installation. Due to the Spring Action, the valve can be installed both horizontally and vertically.
• The raised profile of the soft seat enhances the sealing

Malteax, as a stockist and supplier of cast iron Honeywell dual plate check valves, would offer a range of high-quality valves designed for efficient flow control in various systems. Below is a general technical description of the cast iron Honeywell dual plate check valve, which may align with the offerings of a supplier like Malteax:

Honeywell dual plate check valves are designed for the reliable control of fluid flow within pipeline systems. Made from durable cast iron, these valves are ideal for use in a variety of industries such as water, wastewater, HVAC, and process systems. The dual plate design ensures minimal resistance to flow while preventing backflow and maintaining system integrity.

• Material: Cast iron (typically ASTM A126 Class B or equivalent)
• Valve Type: Dual plate check valve, designed to prevent reverse flow in pipelines
• Size Range: Typically available in sizes from 2 inches to 24 inches, though this can vary depending on specific needs.
• Pressure Rating: Usually rated for working pressures from 150 PSI to 250 PSI, but higher or lower ratings can be available based on design specifications.
• Temperature Range: Suitable for fluid temperatures from -10°C to 120°C, depending on fluid characteristics.
• End Connections: Flanged, but may also be available with threaded or other connection types.
• Design:
  • Dual plates allow for faster closure, minimizing the risk of water hammer and damage to the system.
  • Lightweight and compact design, making it easy to install and maintain.
  • Self-cleaning action due to the design, reducing maintenance requirements.

• Flow Direction: One-way flow; prevents reverse flow effectively.
• Seal Material: Typically features a soft seal (rubber or elastomeric) for a leak-tight closure.
• Operation: Automatic operation based on flow conditions. When flow stops, the dual plates close to prevent backflow, and the valve opens when flow is restored.
• Body Design: Robust cast iron body construction ensures long-lasting performance under high-pressure and high-velocity conditions.

• HVAC Systems: For preventing backflow in heating and cooling systems.
• Water Distribution: Ideal for protecting pumps and preventing reverse flow in municipal water systems.
• Industrial Applications: Suitable for use in fluid and gas transport systems.
• Wastewater Treatment: Used to prevent reverse flow in pipelines carrying treated water.

• Minimal Flow Resistance: Dual plate design reduces head loss compared to traditional single-disc check valves.
• Quick Closure: Dual plates close quickly, reducing the risk of water hammer and system damage.
• Durability: Cast iron construction ensures long service life in various system conditions.
• Low Maintenance: Self-cleaning design reduces the frequency of maintenance and service intervals.

For specific product details, such as availability, pricing, and exact specifications, it’s best to contact Malteax directly. Would you like more information or assistance with a particular part of this?

• Red brass body with BSPT-threaded end connections. Low seat leakage rate (≤0.05 percent of Cv).
• 50:1 rangeability per VDI/VDE 2173. Spring-loaded, self-adjusting packing.
• Accurate positioning to ensure state of the art temperature control.
• Directly coupled electric and pneumatic actuators for easy mounting.
• Valve designs provide equal percentage flow characteristic for water and linear flow characteristic for steam.

• Fugitive Emission Free Retainerless Design
• Optimum Spring Design for more than 1 million cycles
• Zero Velocity Non Slamming Characteristics
• No Valve - Induced Water Hammer Effect
• Standard compliance with API 594, 598 & 6D, BS 6364, API 6FA amongst others.

•  Performance valves for medium temperatures from -10...150 °C 
•  Valve body of grey cast iron EN-GJL-250
•  DN 15...150
•  kvs 1.6...400 m3/h
•  Flange type 21, flange design B
•  VVF42..K with pressure compensation to handle high differential pressure
•  Equipable with electro-motoric actuators SAX.., SAV..  or electro-hydraulic actuators SKD.., SKB.., SKC..