Does anyone read the 598 standard before? What is it all about? Is it a product certification? Our customer is looking into the standards. Anyone knows anything about this?


Std 598
Valve Inspection and Testing
Covers inspection, examination, supplementary examinations, and
pressure test requirements for resilient-seated, nonmetallic-seated (for
example, ceramic), and metal-to-metal-seated valves of the gate, globe,
plug, ball, check, and butterfly types.
API Std 598 supplements the API standards that reference it, but it may
also be applied to other types of valves by agreement between the purchaser
and the valve manufacturer.
8th Edition / May 2004 / Product Number: C59808 / Price: $69.00

Does anyone read the 598 standard before? What is it all about? Is it a product certification? Our customer is looking into the standards. Anyone knows anything about this?


Std 598
Valve Inspection and Testing
Covers inspection, examination, supplementary examinations, and
pressure test requirements for resilient-seated, nonmetallic-seated (for
example, ceramic), and metal-to-metal-seated valves of the gate, globe,
plug, ball, check, and butterfly types.
API Std 598 supplements the API standards that reference it, but it may
also be applied to other types of valves by agreement between the purchaser
and the valve manufacturer.
8th Edition / May 2004 / Product Number: C59808 / Price: $69.00

As stated, it is a specification for inspection and testing of valves. Perhaps Ted (Schmitt) our valve expert would like to enlighten us more.

API 598 is a specification which identifies hydrotest/seat test on soft and metal seated valves.
It indicates tables giving the appropriate test pressures and holding times.
It's not really a certification spec.

This is sort of the content :
a. Inspections by the purchaser at the valve manufacturer’s plant (see 2.1).
b. Inspections by the purchaser outside the valve manufacturer’s plant (see 2.2).
c. Address for inspection notices (see 2.3).
d. Any supplementary examination required (see 2.6).
e. Type of backseat test (see 3.2.2).
f. Low-pressure closure test (see 3.3.3, 3.3.4 and 4.4.2).
g. High-pressure closure test (see 3.4 and 4.5).
h. High-pressure pneumatic shell test (see 3.5).
i. Test fluid temperature for low temperature valves (see 3.6.1).
j. Use of a wetting agent in the test water (see 3.6.4).
k. Certificate of compliance (see 5.1).



Hth

Does anyone read the 598 standard before? What is it all about? Is it a product certification? Our customer is looking into the standards. Anyone knows anything about this?

Hello se123,

Here (http://www.eng-tips.com/viewthread.cfm?qid=169585&page=10) is a forum addressing valve and standards issues.

Stijloor.