PDF PG86 HP Pulsation Damper Specifications Printable Version
Pulsation Dampers - Medium, High, Super, & Ultra Pressure / Stainless Steel
Medium, High, Super, & Ultra Pressure "GAS BAG" Stainless Pulse Dampers
The original 1965, no poppet to jam, no glue or bonds, with internal web stabilization.
Twin connection are off the shelf inventory items, if you do not wish to have in place flush before service nor constant temperature, and no pressure pulse interception, - then save the cost of an extra "T", and use the 2nd connection for RV, Drain, or Gauge.
Due to the instability of metal prices, please call the factory for pulsation damper prices.
THE DIFFERENCE IS IN THE DETAIL
6:1 Safety Factor, "Fail Safe" Pulse Dampers - follow sound engineering practice and are built to our "suitable for purpose - and safe in use code" (Rev. 1. 1965) which requires that they "lose energy stored in them BEFORE reaching destruction pressure". Proof tests to destruction, for stainless & carbon steel, with 3 wall thickness at each of 10 diameters prove a safety factor in excess of 6. |
Where:- "P" Design Pressure is MAWP + 10% to RV set, then + 15% to cover RV accumulation.
IE MAWP is 79% of P psi
S is a low allowable working stress for a seamless ductile material.
Ri-C is less than 0.3 Ri-m
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The Safety Difference
Ref. ASME VIII Div. 1. Any of these "snubbers" that are "U" stamped are provided solely at customers own risk, the company removes all warrantee expressed or implied, as to safety on such items; see "Note" below.
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NOTE: Following other criteria may often results in a safety factor less than 3, the strain from which causes fatigue. |
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