You dont want to shut down the entire facility, so you decide to block off and depressurize just the section youre working on. Jan 09, 2018 the double block and bleed system requires the use of two valves and a spool piece. Mediumpressure double block and bleed valves ipt series block and bleed valves catalog. Headquarters and factory anfeng industrial park dongou. Providing personnel with a high degree of safety in the space of a single valve that is easy to install. Double block and bleed animation for industrial valve company double block and bleed valves. Single and double block and bleed valve 7 ordering information two piece bolted design designator. Jul 11, 2016 the double block and bleed valve is used to cut off or connect the media in various of class150class2500. The double block and bleed isolation philosophy requires two inline isolation valves and a bleed valve, used to drain or vent trapped fluid between the two closure elements in order to safely isolate safely the downstream pipe. Duraseal components manufactured from superior materials can upgrade existing twinseals in the field. Improve protection and isolate large equipment areas safely by specifying valvtechnologies valves with double block and bleed capability. Double block and bleed valves, modular,monflange,root valve. In line double block and bleed valve ball valve block needle valve vent ball valve block 12 npt female inletoutlet mwp 10,000 psi. General valve twin seal dbb valve schlumberger products.
Ktm virgo series trunnion mounted ball valves are designed to make maintaining a safe process easier with features like a blowoutproof stem, api 6076fa fire safety certification, built in antistatic devices, and extra wall thickness for increased corrosion resistance, to name a few. Remotemount manifolds feature an angled vent valve for panel mounting in a 2 valve design. Sealing is achieved by spring loaded piston type seats which shut off flow when line pressure acts on the upstream seat. Double block and bleed ball valves on parker autoclave. The definitions of double block and bleed dbb and double isolation and bleed dib differ between sources in the oil and gas industry. The advanced features incorporated onto our range of floating and trunnion ball valves are also designed into these double block and bleed valves. Its time to do maintenance on a section of process. Our double block and bleed valves comply with asme, ansi and api standards. Our compact, integrated designs and accurate, rugged construction provide a high reliability solution for complex multiple instrument valve systems. Valves 3d contentcentral free 3d cad models, 2d drawings. Double block and bleed ball valves high pressure company. The double block and bleed dbb cameron general valve twin seal plug valve reduces this constant wear by using two seating slips mounted independently on a tapered plug by dovetails, which mechanically retract from the seating surface prior to rotating. Double block and bleed animation for industrial valve. Both styles use a compact design and have a choice of packing and.
This valve is a spacesaving dual isolation solution that reduces the need for costly multi valve systems. Trunnion ball valve special features balon corporation. True meaning of double block and bleed valve magazine. Compact design double block and bleed ball valves fluitek.
Medium pressure double block and bleed valves swagelok. The design provides an effective method for mounting gauges with facility to test and calibrate gauges and pressure switches. Apr 01, 2015 we walk you through step by step on how double block and bleed valves work as well as the best applications to in which to use them. American petroleum institute api specifications now refer to and describe both. For double block and bleed design, trunnion or floating type, special body design without flanges results in a very short endtoend dimension. Join the grabcad community today to gain access and download. Double block and bleed valves at hylok, we create value for our clients by engineering high quality double block bleed valves customized to match individual process requirements. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. V3 flange to 12 nptf designator f flange to flange designator ff single block and bleed designator s double block and bleed designator d. This trunnion style ball valve from valmatic provides double block and bleed in a single valve. B double block and bleed ball valves are designed and manufactured strictly to international standards asme b16. Swagelok process interface valves and process monoflanges can be configured to suit a variety of special applications.
Superlok can offer the special combination of double block and bleed valve systems together with fittings, both being designed and produced by bmt. Ipt series block and bleed valves are available in two configurations. Differences in definitions and terms are important when it comes to which valve capability to use in what type of system. Api 6d valves double block and bleed valves products api 6d trunnion ball valves double block and bleed pipeline valves global valve and controls trunnion design ball valves incorporate the use of upper and lower supports gvc trunnion plate system to retain the ball under pressure. The issue gets even more confusing because the term double block and bleed is commonly used when requesting a valve with capabilities of double isolation and bleed dib, which is a different design. Double block and bleed ball valves high pressure equipment has designed a trunion style block and bleed ball valve for calibration applications to 15,000 psi. This reliable ball valve is an excellent method to block and bleed high pressure hydraulic and pneumatic systems used for pressure monitoring and test, chemical injection and drain line. This style can isolate piping on both sides of the valve unidirectionally to vent bleed the valve cavity between the seats. The duraseal can be repaired inline after depressurizing and draining the valve. Double block and bleed valve 3d cad model library grabcad.
Api 6d defines a doubleblockandbleed valve dbb as a single valve with two seating surfaces that, in the closed position, provides a seal against pressure from both ends of the valve with a means of ventingbleeding the cavity between the seating surfaces. Block and bleed globe valve module options are also available. In addition to double block and bleed assemblies, single block and bleed, and block combinations are available. Fill out the form below with your information to view and download valvtechnologies brochures. Instrumentation valves,needle valves, manifold valves, ball valves, check valves, pressure relief valves, bleed valves,tube fittings,accessories,airheader, condensate pot, thermowell,syphon, orifice plate assembly,tube clamp,pipe fittings, manifords valves, pulsation damperssnubbers, gate valves, needle valves, high pressure ball valves, globe valves, safety valve, non return valves.
Duraseal parts are completely interchangeable with. Double block and bleed valves bonney forge corporation. By combining all block and bleed components into a single unit, dbb valves minimize the risk of leak paths to atmosphere while providing significant weight savings. Full bore we offer a real full bore valve according to api 6d iso 143. The valves made of different materials are suitable for various media such as water. Ktm virgo series n trunnion ball valves emerson us. Choise of this combination results in the elimination of taper thread connections and the need for thread sealant. Download valve catalogs valve cad drawings locate distributor download certifications. The proveninthefield valvtechnologies package approach lowers installation costs and saves time compared to individual component assembly.
Double block and bleed valves are also known as dbb valves. Contents introduction application installaltions specification ball valve type. Api defines dib as a single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of ventingbleeding the. Various flange ratings are available to suit many pressure ratings and sizes within the piping system. Double block and bleed ball valves parker autoclave engineers. Double block and bleed ball valves rays flow control. Spirax sarco double block and bleed isolation valves. Dklok canada carries single and double block and bleed valves and mono flange valves. The double block and bleed valve or a dbbv can perform the tasks of 3 separate valves 2 separate isolations and 1 drain valve which apart from being hugely space saving can also save on weight and time due to installation and maintenance practices.
Pmt valves pvt ltd, instrumentation valves,needle valves. Ve series directmount instrument manifolds offer flange mounting to instruments, gauges, pressure switches, and absolute pressure transmitters in 2, 3, and 5 valve configurations. This article, on the true meaning of double block and bleed initially ran on june 1, 2010. Flanged to flanged double block and bleed dbb valves.
A bleed valve is used to drain the spool and verify seal integrity. Fluitek orsenigo can meet all the requirements coming from the customer, including the need of valves with reduced dimensions and weight. This full port quarter turn double ball valve is designed for operation up to 15,000 psi 1034 bar. This feature can be achieved with one single valves cw a bleed port between the obturators.