14 www.morbros.com GATE VALVES 6* The 234/235 valve operates by rotating a powder coated handwheel counter clockwise to open or clockwise to Y ! + * ) 4 :* 2 > … non-locking gate valve. Flanged, ductile iron body/bonnet, brass stem/discs. 2 > … same as Fig. 234DI, but locking style. Fig. 235… non-locking gate valve. Threaded, all brass construction. Fig. 235B… same as Fig. 235, but locking style. 2 $ … same as Fig. 235, but ductile iron body/bonnet, brass stem/discs. 2 $ … same as Fig. 235DI, but locking style. Gate Valve Without Expansion Relief… rising stem gate valve used $ > # $ - K ! ! $ ® an option for brass, standard for ductile. #* :* \ … cold, non-shock, 200 PSI WOG ) ' 6 \ $ $ ! require steel or nodular iron, Fig. 234DI, 235DI or 235BDI ( ductile iron) will comply. : 6 | }_{ > $ $ Z ! Q _} in the appendix. Fig. 235 series is threaded (NPT). 6* The 534/535 gate valve is the same as Fig. 234/235 gate valve but with the additional feature of “expansion relief.” ] Q \ ;…piping exposed to outside temperature rise will create pressure build-up in sections of piping that are isolated by closed valves for example. Expansion relief feature allows product to bleed back through the closed valve, and thereby helping relieve excessive pressure in the line. If left uncontrolled, pressure build-up within a system can result in a release of product to the outside. * ) 4 :* $2> … non-locking gate valve. Ductile iron body/bonnet, brass stem/discs. 2" available in 25 PSI or 50 PSI. $2> … same as Fig. 534DI, but locking style. Fig. 535… non-locking gate valve. Threaded, all brass construction. ER at approximately 50 PSI. Fig. 535B… same as Fig. 535, but locking style. $2$ … same as Fig. 535, but ductile iron body/bonnet, brass stem/discs. $2$ … same as Fig. 535DI, but locking style. ) ' 6 \ $ $ ! #$ nodular iron, Fig. 534BDI, 535DI or 535BDI (ductile iron) will comply. : 6 _ | }_{ > $ $ Z ! Q _} _|_ Q is threaded (NPT). Gate Valve With Expansion Relief… rising stem gate valve $ $ > liquid handling. Available in brass and ductile ® ! < for ductile. #* :* \ … cold, non-shock, 200 PSI WOG 2 > Fig. 235 Fig. 235B $2> Fig. 535 Fig. 535B Fig. 1½" 2" 3" 2 > "( & & % 2 $ % 2 > "( $ % 2 && % 2 $ $ $& % $ % ? && % 2 $ ? $ % & & % $ % 2 $ > $& % && % ? $& % 2 $ $ $ % & & % && % WARNING… 2 >@ 2$ * d: ) , Q * ; 6 % < ; Q * ; ) ) + 6 ; < $2> * $2$ Fig. 2" 3" $2> & & % 22 & % $2> & % 2 & % $2$ $ % $ % $2$ & & % & % $2$ && % & % $2$ & $ % $ % 234 & 235 Series 534 & 535 Series
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