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Mars series 22, two piece, full bore, ball
valve with reinforced PTFE seats/seals, an ISO 5211 mounting
pad and square stemed top for direct actuation. Ends are threaded
BSP.
The valve has a blow out proof stem and
an antistatic device between the stem and body and stem and
ball.
The high cycle life stem design is accomplished
by a double sealing system. The 45° Pyramidal Segment
Ring in conjunction with a seal that fits on top of the Pyramidal
segment provides the primary seal. Most of the media in the
pipeline is contained by this seal. As a precautionary measure
a V ring chevron packing provides the secondary sealing. On
top of the stem is a set of Belleville washers that automatically
adjusts compression to the seal to compensate for wear, pressure
or temperature fluctuations.
Specification:
| Body Constuction: |
Cast two piece body, full bore. |
| Body: |
CF8M (DIN 1.4408) stainless steel or WCB (DIN 1.0619)
carbon steel. |
| Temperature: |
-60°F (-51°C) to 420°F (215°C). |
| Pressure: |
1/2" - 2" 1000 psi (69 bar)
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| Ball & Stem |
316 stainless steel. |
The above specification is for the valve
body, the specification of the reinforced PTFE seats will
vary. Maximum pressure will decrease as the temperature increases
up to a maximum temperature of 420°F (215°C).
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