Habonim Catalog Interactive 2024 V04 15022024 - Catalog - Page 421
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General
Chlorine Service feature is available for part of Habonim’s valves series – check series ordering
codes for availability. Available valve sizes, types and variety of end connections are per each
relevant series ordering codes.
Design
Valves designed for chlorine in a liquid state should be equipped with an upstream pressure
relief hole in the ball (Ordering code -P250). The relief hole avoids trapped cavities in the valve
closed position and pressure buildup due to thermal expansion during liquid ammonia boil
off. A valve with relief hole in the ball is uni-directional, the relief hole must be positioned at the
upstream flow direction for complete in-line sealing. For Bi-directional valve design for liquid
chlorine a Self-Relief Seats (Ordering code -SRS) should be used with seats material of TFM or
CF PTFE, the SRS seat design dynamically release cavity pressure buildup and return to shutoff
position once the over pressure is relieved. Valves designed for chlorine in the gaseous state do
not require an upstream pressure relief hole.
Self-Relieving-Seat
(SRS)
Valve Materials for dry chlorine
Valves for dry Chlorine Systems are used with chlorine in gas or liquid state, usually at
temperatures between -101°C (-150°F) and +149°C (+300°F). Steel piping is commonly used
for handling dry chlorine, defined as containing no more than 150 PPM of water by weight.
Stainless steels of types 3xx might fail due to chloride stress cracking, particularly in presence
of moisture at ambient and elevated temperatures. Monel 400 and Alloy C22, or Alloy C276 are
the recommended materials for ball and stem, with TFM or CF PTFE seats. Body and stem seals
can be PTFE, CF PTFE or graphite for fire-safe valves.
Moisture Level
Recommended Material
0 - 20 PPM
Alloy C22 ball and Monel 400 stem
20 - 50 PPM
Alloy C22 ball and stem
0 - 50 PPM
Alloy C22 ball and stem (for end of line service
Note: For higher moisture levels up to 150 PPM, Alloy C22 is the recommended material of
construction for all metal parts.
SPECIAL USE VALVES
Cavity pressure relief
(P250 Ball)
3 mm relief hole face
the upstream
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