Even at maximum pressure, the blocks bear the load uniformly and reduce lateral stress, keeping the ball centered. Ptr pdw 91 sbr question my question is when i get stamp back is it as easy as just replacing the endcap with a butt stock and have all proper markings per atf rule placed on the barrel or what is required when just replacing the end cap on a pistol rifle concerning markings or is the end cap a special one that requires smithing to get a. Shooters bible guide to tactical firearms index of es. Balon has done away with the externally inserted lower trunnion, a hazardous leak path, a maintenance nuisance, and a blowout point. This rifle has been further developed and improved over the years into the high quality. Apr 30, 2012 ptr 91 gi part 4, hk paddle conversion magazine release revised repost duration. Fbv trunnion ball valves are offered in 2 pc side entry, 3 pc side entry, welded body and top entry design in a wide range of carbon and stainless steel material. Ball and trunnion boot replacement for a bodies only. Trunnion and floating ball valves ball valves are used extensively for process line isolation in a variety of industries including the oil and gas, onshore and offshore oil processing, oil refining, chemical and petrochemical, and general process industries. The engineering development of walworth products is bound to api 6d, iso 143. I just got a new ptr 91 gi model without the top rail off buds gun shop. This is particularly advantageous when the ball valve is actuated because it reduce the size of the actuator and hence the overall costs of the valve actuation package.
Early valiant barracuda club ball and trunion ujoint. One is replacing the ball and trunion joint on the driveshaft with a ujoint more modern. Thank you for your interest in our cs trunnion type ball valve products. Trunnion mounted forged ball valves model ff and gg reduced bore 3 36 full bore 2 48 asme class 150 2500 model ff and gg are trunnion mounted, polymeric seated ball valves, which provide bubbletightness over an extensive range of temperatures and pressures. For gear operated valves, this feature is included on the gear operator.
A ball valve is a form of quarterturn valve which uses a hollow, perforated and pivoting ball to control flow through it. All meridiantm trunnion ball valves are low emission capable due to the oring design. Top entry ball valve the calvary rsbv is a trunnion mounted rising stem ball valve design, suitable to a wide range of applications. Cracked trunnions fixed in under a month and way better paint sheen than mke or. Designed, tested and manufactured to provide peak performance in your process. While, not knowing if this is the feed or discharge end trunnion, there could be a number of things causing this emergency repair job and plant downtime. By contrast, balons multiseal seats provide multiple sealing surfaces for fullrange sealing. Description ball valves mounted over a ball, also called trunnion ball valves are mainly used in the petroleum industry. Take the whole thing to a diriveshaft shop and let the expert repplace it for you, it requires cutting welding and measurement to keep it the correct length. Three piece body construction, plate trunnion, sideentry, symmetric fully welded body. I just got a new ptr91 gi model without the top rail off buds gun shop. These valves provide confidence in service given their double blockage and purge function. Trunnion ball valve, flanged end ball valve, flanged end.
They are designed to offer the maximum reliability through the implementation of technical solutions that still have no equal on the market. Other materials are also available none a105 bodycap, 316ss ball, 630ss stem bl lf2 bodycap, 316ss ball, 630ss stem m 316ss bodycap ball, 630ss stem nominal size nps 2 to 24 product coding for kitz trunnion mounted ball valves soft seated metal seated example. Trunnion ball valve special features balon corporation. All meridiantm trunnion ball valves are low emission capable due to. In the human bodyurine, bile, the lower gastrointestinal tract and the secretions of. Ansi class 150 285 psi wp 10 through 12 bolted body construction. The trunnion ball valve is a form of quarterturn valve which uses a hollow, perforated and fixedsupported. Took it out and ran about 60 rounds through it with only 1 problem that was ammo related and ill get to that in a bit. All trunnion ball valves are equipped with a locking device to api 608. Materials free fulltext corrosion of metallic biomaterials.
I was also talking to mack service manager he said they. Converting a front ujoint the ball andtrunion joint detroit style was used through 1965 on abodies. All penta trunnion ball valves are designed to be equipped with metallic seats in pentafite to allow the manufacturing of metal seated ball valves with zero. The early gimodels had a few with trunion cracking problems, but im sure ptr got that issue resolved, too. Ptr91 gi part 4, hk paddle conversion magazine release revised repost duration. The balon series t incorporates loadbearing blocks. This is the ptr 91 gi variant, factory product code 915301.
All trunnion ball valves are equipped with iso 5211 actuator mounting flanges. Argus fk76m trunnion mounted ball valves are engineered to deliver longlasting, tight shutoff performance in oil and gas, petrochemical and chemical industry applications. In 1990 sri decided to expand into the machining of trunnion and floating ball isolation valves to its own proprietary. Ball and trunnion boot replacement for a bodies only mopar. That said, ptr bought hks old machines and shipped them to the us to use in their factories, so i like to think of them as just merican hks. Appearance the floating ball valve and the trunnion ball valve are easy to distinguish in appearance. Transgranular stress corrosion cracking tgscc and wear were identified. Penta produces and provides trunnion ball valve, which is suitable for a wide range of applications. Sri started in france by supplying and servicing local refineries. Full port, 224 class 150300600, investment casting,haitima flanged end trunnion ball valve. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed, making for easy visual confirmation of the valves status.
The g3hk91 design is one of the most reliable battle rifle designs there is, when properly built, using quality parts, and built to hk specs as they should be. I was wondering idf anyone out there replaced with aftermarket trunnion that did not require you to slide them in from the back. Types of trunnion ball valves and trunnion ball valve suppliers. Trunnion mounted ball valvetrunnion mounted ball valve. One gi, which cracked the trunnion as one of the hardness problem guns, ptr fixed that in a week turn, and its been fine since. Other materials are also available none a105 bodycap, 316ss ball, 630ss stem bl lf2 bodycap, 316ss ball, 630ss stem m 316ss bodycapball, 630ss stem nominal size nps 2 to 24 product coding for kitz trunnion mounted ball valves soft seated metal seated example. Package includes front rubber boot with clamps, trunion pin, trunion ballroller packs, centering buttons and spring washers, grease. This is the ptr91 gi variant, factory product code 915301. K metal trigger group housing, 58x24 barrel threading as well as a paddle magazine release. It features a modular design that allows simplified adaptation to diverse safety, emissions and performance requirements. The mechanical or cam movement of the ball provides a friction free operation, eliminating wear between the sealing surfaces and extending the valve life. Forged body, full or reduced bore, pressure class 150 to 600.
I purchased from atlantic arms, good service and quick. Even so if you get a new ptr and have an issue ive heard that the ptr customer service is top of. Take the whole thing to a diriveshaft shop and let the expert repplace it for you, it requires cutting welding and measurement to. Api6d cast steel wcb high pressure gear trunnion ball valve product show feature. The ptr91 rifle recreates the renowned hk g3a3zf sniper variant. I am trying to decide between the ptr91 gi, and the century arms cetme. It is open when the balls hole is in line with the flow and closed when it is pivoted 90degrees by the valve handle. Bearings could be mounted in top shaft and bottom shaft, which reduces operation torque. Trunnion ball valve special features trunnion ball valve, ball valve, trunnion valve, carbon steel trunnion. A trunnion mounted valve means that the ball is constrained by bearings and is only allowed to rotate, the majority of the hydraulic load to be supported by the system constraints.
Jan 06, 2014 the early gi models had a few with trunion cracking problems, but im sure ptr got that issue resolved, too. All metallurgies carbon and stainless steel, special materials api 6d 6d0232 approval api 6d 6d0232 approval fire safe acc to bs6755 sneap. Sri founded in marseille, france, in 1978 has a decades long history of serving the oil and gas, power, refining, chemical and, metals and mining industries. Manufacturer of trunnion ball valves for different applications. Locate your trunnion ball valve suppliers and get a quote for great quality trunnion ball valves here. My order 66 dt magazineserial tx066 in my full auto k gun for may 4th. Carbon steel trunnion ball valve manufacturer of trunnion. Trunnion ball valves the trunnion ball valve is a form of quarterturn valve which uses a hollow, perforated and fixedsupported ball to control flow through it. Its on its way to my ffl dealer, and i have a couple upgrades for it. I recently purchased 1998 mack rd 688s dump with cracked trunnion. Picked up a new ptr91 gi mid month and here is my report.
When the trunnion ball valve be used normally,its sealed by seat and ball surface,seat retainer sealed by oring and body,this is soft sealed and reliable sealing. The basic design specifications are manufactured in. Stacking of hard balls atoms in simple cubic structure. The seats move with the medium pressure to tight the ball and seal ring to ensure sealing reliability. The stem is made of pom, the acetabular cup of uhmwpe, and the ball and neck. Dropped charge can cause stress fractures andor deformation metallurgical quality issues from foundry e. Zinc protein and carbohydrate metabolism skinmucosa changes. I am trying to decide between the ptr 91 gi, and the century arms cetme. Nylon for lowpressure sealing, acetal for highpressure sealing.
When the seat and oring are burnt,the seat retainer and body will be sealed by expanded graphite. Picked up a new ptr 91 gi mid month and here is my report. Top entry trunnion ball valve are new products which developed upon the advanced technology abroad and through many years of the designing and manufacturing experience of ours. Then you have the problem if the housing is worn there is going to be too much clearance to the new bearings and then you are back to square 1. Hk 94 93 91 trigger pack single stage trigger job duration. Promptly emailed ptr with pictures and proof of purchase from atlantic firearms. Then you have the problem if the housing is worn there is going to be too much clearance to the new bearings and then.
It combines an angular flexibility with a longitudinal flexibility, in a single compact package. Ball of trunnion ball valve is fixed, it does not move with medium pressure. The extensive range includes softseated designs that provide excellent leakresistance. The accuracy was fantastic by my standards 5 groups at 200 yds.
Trunnion mounted forged ball valves model ff and gg. Love my ptr 91, dont care what anyone says, i think its the best semiauto. A trunnion ball valve has additional mechanical anchoring of the ball at the top and the bottom, suitable for larger and higher pressure valves say, above 10 cm and 40 bars. How to rebuild a ball and trunnion drive shaft ccrc. The fk76m ball valve is available in standard and severe service designs and offers metalseated and. Windmill sales representative will contact you within 24 hours. An advantage of trunnion ball design over floating ball is the lower operating torque of the ball. Converting a front ujoint the ballandtrunion joint detroit style was used through 1965 on abodies. Trunnion ball valve ball valve,check valve,y stainer. Metals valve provides cast steel trunnion mounted ball valves in a wide variety of cast materials covering carbon steel, alloy steel, and stainless steel. Aug 22, 2011 one is replacing the ball and trunion joint on the driveshaft with a ujoint more modern. Trunnion ball valves if process uptime and valve performance are important to you, then look no further for all your valve needs.
Cleaned it, checked bolt gap and out of the box it sat at. This type of ball valve is known as cavity filler ball valve. Bakshi bal balaji baldwin bale balents balfour balfour1 ball ballard balloon. Jan 21, 2015 trunnion ball valves are mainly used in the industries of natural gas,oil products,chemicals,metallurgy,urban construction,environmental protection,pharmaceuticals,foodstuff and etc. Sri sud robinetterie industrie design, manufacturing of. The driveshaft with the bt joint unbolts from transmission. Table of contents section e section side entry trunnion b ball valves b1 b6 side entry ball valves are valves where the ball. Typical reason to replace a ball mill trunnion unexpectedly. There are a few types of ball valves related to the attachment and lateral movement of the ball. Trunnion mounted ball valve,soft seat typebol valve. Similarly, trunnion mounted ball design is also capable of bidirectional sealing. Fbv trunnion ball valves are manufactured according to api 6d design and fire safe tested per api 6fa and api 607 standard.
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