Design Specification
Manufactured with an inside screw or outside screw, in sizes ranging from 15mm bore to 900mm bore.
Coatings
Sealand Valves can accommodate most coating requirements. Contact our design office for further details
Service and Spares
With full traceability, we can identify a valve previously supplied by ourselves and manufacture any spares from our existing records.
We also carry out a full refurbishment and testing service on customers valves that were manufactured by other companies.
Materials
We can design and manufacture valves and Trim in a wide range of alloys including cast iron, cast steel, bronze, super duplex, stainless steel, gunmetal, bronze and Monel
We can advise which materials are the most suitable for your installation requirements.
CAST STEEL GATE VALVE - ASME CLASS 150 LBS. [FIG. VS01]
CAST STEEL GATE VALVE - ASME CLASS 300 LBS. [FIG. VS03]
CAST STEEL GATE VALVE - ASME CLASS 600 LBS. [FIG. VS06]
Derval gate valves are used as efficient shut-off valves with flow in either direction for water, saturated steam, air, gas, oil and crude oil products. They are utilized in applications where minimum pressure drop is necessary.
Due to their specific design, gate valves should be operated in the full-open or full-close position. Concentrated flow across the seats of a partially opened gate valve risks possible seat damage, therefore throt-tling is not recommended.
Operating parameters are in accordance with ASME B16.34 standard
Derval gate valves are normally installed in horizontal pipe with vertical stem (handwheel up).
The high quality Derval valves are installed in a large variety of services in the Oil & Gas field, Chemical and Petrochemical industry,in On-shore and Off-shore dril-ling/refining, Power Generation, Water and Wastewater Treatment industries.
BEV-Boer Valve Cast Steel Gate Valves are designed and manufactured to ensure leakage of less than 100 ppm (parts per million) of volatile organic compounds. Extensive base line laboratory testing (static and cycle testing) has been performed establishing critical design parameters necessary to achieve low emission sealing in the BEV-Boer Valve stem packing seal area and in the bonnet gasket sealing area, In-house testing procedure has been developed and is periodically performed to ensure that standard product design and manufacturing criteria consistently result in the BEV-Boer Valve Cast Steel Gate Valve meeting a maximum of 100 ppm VOC leakage prior to shipment.
BEV-Boer Valve Cast Steel Gate Valves are with main Features as below:
» SizeRanges: 1 1/2” through 48”
» Pressure Ratings: ANSI #150 to 2500
» Standards compliance: API 600, ASME B16.34 or equivalents
» Materials: Cast Carbon Steel, Cast Stainless Steel, Cast Duplex or Other Specials
» Ends Connections: Flanged(FF, RF, RTJ) to international standards
» OS&Y, Outside Stem and Yoke
» Metal-sealed(API Trim # 1, #5, #8, #10 and etc.)
» Optional Locking Device or Stem Extension
» Optional Direct Mounting to ISO 5211
» Full Port
