- #Api 608 vs api 607 full
- #Api 608 vs api 607 iso
These two areas of design advancement enabled the ball valve to perform feats of closure not successfully attained before.
“The key to metal-seated ball valve success is precision lapping techniques for precisely mating the ball with its seats, and the development of ultra-hard and abrasion-resistant ball and seat coatings.
Metal-seated ball valves are ideal for these conditions because they are less susceptible to damage than soft-seated ball valves. They also need to perform to incredibly high standards, such as zero leakage and abrasion resistance.
#Api 608 vs api 607 iso
Neither API nor any of API’s employees, subcontractors, consultants, committees, or other assignees make any warranty or representation, either express or. API 607 6th Edition Fire Test Approved API 608 Compliant Valve Blow out proof Stem & anti-static design A wide range of body material available including Monel 400, CN7M, CW12MW, M35-1, CE3MN, CD3MN, SS904L, Stainless Steel and Carbon Steel Integral ISO 5211 Mounting pad simplify fit and alignment for bracketry and actuator Floating Ball Design Lockable handle in. With respect to particular circumstances, local, state, and federal laws and regulations should be reviewed.
Testing per ANSI FCI 70.2 Class VI (or MSS-SP61, API-598,API-607, API-608, API-6D, etc.)Ĭritical and severe service valves need to be durable and require as little maintenance and repair as possible. API STANDARD 607 SEVENTH EDITION, JUNE 2016 Special Notes API publications necessarily address problems of a general nature. Usually on a 1/2 - 8 inch product line, only 2-3 tests are required. A table can be generated with the qualification range based on each valves stem diameter and packing heights. The overall height of the qualified valves needs to be in the 75-125% range of the tested valve. While the qualification range based on the stem diameter is quite broad, 50 - 200% of the tested size, the criteria of the nominal packing height is often overlooked. The Pressure/Temperature curves need to be examined. TO: API 608 Monogram Licensees API 608 Monogram Applicants API Auditors FROM: API Monogram/APIQR Program RE: API Standard 608, 6th Edition Please be advised that the 6th Edition of API Standard 608, Metal Ball Valves-Flanged, Threaded, and Welding Ends, has been published. Most PTFE-seated/sealed valves are not rated above 500F. The valve bore in open position conforms to EN. Common design features of all ball valve types. This is often the case for metal-seated valves with graphite seals (Class 300 and above), but gets a little more complicated for elasto/polymer seals (or seats). according to American standards API 608 and API 6D (EN 13942). So selecting a valve that is rated at or above 600 psig at those temperatures will qualify everything else. The maximum test pressure required by the standard is 600 psig at room temperature and at 500 deg. Stem seal manufacturers need to be the same, so the specific brand/style of graphite packing will need to be noted on the reports. Surface finishes, clearances, sealing stresses need to be equivalent. It is compliant with fire safety standards API 607 / API 6FA and special material. ABS PDA Certified for Marine, Offshore Platform and Industrial Applications - Water, Oil and Air. ISO 17292 and API 608 fully compliance to serve petroleum, petrochemical and allied industries. So a ball valve cannot qualify a plug or butterfly valve. The design and manufacture are in accordance with ASME B16.34 and API 608. API 607 6th / ISO 10497 / BS 6755 Part II. They need to be the same, as does the obturator. Seal material and design qualification is simple. API STD 607, 7th Edition, June 2016 - Fire Test for Quarter-turn Valves and Valves Equipped with Nonmetallic Seats This standard specifies fire type-testing requirements and a fire type-test method for confirming the pressure-containing capability of quarter-turn valves and other valves with nonmetallic seating under pressure during and after the fire test. I can divide these into 3 groups, seal material and design, valve pressure/temperature rating and seal dimensions. #Api 608 vs api 607 full
The full description of the Valves Qualified is given in Section 11 of the standard. This topic will be part of my presentation at the Fugitive Emission Summit in Shanghai this September. Selecting the fewest valves to test to qualify an entire product line is a goal for most manufacturers. API 641, which was released in 2016, is not only a common requested test by valve buyers, but is also becoming a requirement for quarter-turn valves, as it is making its way into API valve design standards.
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