Ball Valve With Graphite Seat

Depending on the valve and trim we can achieve temperatures in excess of 1000 f for metal seated ball valves.

Ball valve with graphite seat. Valve seat seal selection guide choosing the right seat material is the most. Chemical resistance is equal to other tfe seats. Fillers including graphite enable this seat material to have a better cycle life than other fi lled or reinforced tfe seats. Metal seat valves m for service with severe flashing hydraulic shock high temperature or abrasive media.

Ktm gratite seat hi temp ball valves floating vctds 02582 en 17 12. Hard graphite seated ball valve trim 3h notes 1 allowable seat leakage shall be in accordance with ansi fci 70 2 class vi 2 equivalent to aisi type 329 body body cap stem ball gland gland gland packing handle handle bar handle head handle nut name plate lev plate gasket ball seat cup nut gland nut cap bolt gland bolt lock plate. Hard graphite seated floating ball design valve trim 3h d1 a 4 u b f up to size 1 1 4. Intended usage is in erosive and or abrasive applications in which higher temperatures aren t a concern.

Temperature range is 29 c to 260 c. The polymeric seals incorporated in this metal seat configuration are replaced with flexible die formed graphite seat seals with stem. Balls must be of the best spherical quality and lapped with the carbon graphite seats. Metallized carbon corporation s carbon graphite ball valve seats are for use in valves designed to handle hot liquids or hot gases and are available in more than 150 grades of metcar s carbon graphite material the ball seats are a good fit for use in temperatures from approximately 350 f where plastic ball valve seats begin to soften.

Body cap stem ball gland gland packing handle 1 handle bar 1 handle head 1 name plate gasket packing washer ball seat cap nut cap bolt gland bolt keylock plate. In assembly the valve body seats must be cleaned and lapped to a fi nish of 63 microinches ra. The seat and flexible graphite to the cushion seal. Refer to mmabr1023 for pres sure temperature charts.

2 seat seat retainer cushion 17 15 16 2 8 5 14 9 11 4 13 12 10 1 19 18 7 6 3 c b a. Ball valve seat seal selection guide. Pressure steam above 300 psi higher than 422 f metal graphite graphite printing date 2018 09 flo tite ball valves are an excellent choice for a wide range of steam services. Graphite body seals are completely.

Ktm s gratite seat ball valve not only operates across an impressive range of temperatures. Applications valve seat seal materials. All carbon graphite seated valves applied at temperatures of 500 f or greater must have ball stops. Tfe also has a low coefficient of friction so is.

Typically we hard face a stainless steel seat with stellite then lap the ball to the seat for tight shut off.