MAIN FEATURES
Modular Double Block and Bleed valves from Oliver Twinsafe are designed to offer one valve solution, available in most sizes to fit in the same space as a single ball valve or with the shortest possible face-to-face dimension. This compact design saves weight and space and reduces costly installation charges, whilst providing true double isolation for maximum safety and reduced process problems due to valve leakage.
The key benefits of the Oliver Twinsafe Valves are:
Space-saving - ability to replace single isolate valves with a true double block and bleed valve, but within the same overall length, ensuring that expensive pipework modifications are kept to an absolute minimum.
Weight-saving - compared to a conventional Double Block and Bleed hook up of two separate ball valves with a central spool piece and vent valve, weight savings can be over 50%.
Increased Safety - compared to a conventional Double Block and Bleed arrangement using separate valves, the number of potential leak points is greatly reduced.
Cost-saving - fewer items to purchase and expedite means overall cost savings, plus lower installation and maintenance costs.
PRODUCT RANGE
Class 150 from ½'' to 10''
Class 300 from ½'' to 8''
Class 600 from 1/2" to 4"
MATERIALS
BODY: Carbon steel, Stainless steel, Low temperature carbon steel, Duplex, Special Alloys,... Other materials under request
SOFT SEATS : PTFE, RPTFE, PEEK, DEVLON, NYLON,... Other materials under request
METAL SEAT:Tungsten Carbide(TC), Stellited
, Ni60...Other materials under request.
TRIM: A105+EP,304,316, 410, MONEL,... Other materials under request
DESIGN STANDARDS
ASME Standards:
B1.20.1Pipe Threads,General Purpose(Inch)
B16.10Face-to-Face and End-to-End Dimensions of Valves
B16.25Buttwelding Ends
B16.11Forged Fittings, Socket-Welding and Threaded
B16.5Flanged Fittings and Pipe Flanges
B16.47Large Diameter Steel Flanges
API Standards:
6DSpecifications for Pipeline valves
598Valve Inspection and Testing
607Fire test for soft-seated quarter-turn valves
6FASpecification for Fire Test for Valves
MSS Standards:
SP-55Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Visual Method for Evaluation of Surface Irregularities
SP-54Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Radiographic Examination Method
SP-53Quality Standard for Steel Castings for Valves,Flanges,and Fittings and Other Piping Components-Magnetic Particle Examination Method
PRODUCT |
SIZE |
PRESSURE |
POWER |
BRAND NAME |
| DBB BALL VALVE |
1/2"-48" |
150lb-2500lb |
WORM, PNEUMAITC, HYDRAULIC |
YFV, OEM |
Production process
Certificates & Test reports
Packing&Shipping
FAQ
Q:Are you a trading company or a manufacturer?
We are a manufacturer with a 13,000 square metre factory.
Q:Can you provide assembly drawings?
Yes, we will provide the relevant drawings as soon as possible if you need them.
Q:How do you guarantee the quality of your products?
A: Before the products leave the factory, our quality inspectors will inspect each product before shipment to ensure the pass rate.
Q: Can you produce different standard valves according to customers' requirements?
A: Yes, please provide specific details, such as model, size, pressure, material and so on.
Q:How long is your delivery time?
A: Usually 15-30 days, it depends on the order quantity and our storage.
Audited Supplier 
Audited Supplier 
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