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    Round inlet and a larger square outlet
    RKO is the optimal performer for
    junc traps and high density cleaners
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    DN 100 - DN 600 (4” - 24”)

Knife gate valve RKO

Stafsjö’s knife gate valve RKO is the optimal performer for junc traps and high density cleaners separating abrasive materials such as sand, stones, staples, glass and other type of rejects from the process media. ​

The RKO valve is modular designed and it can easily be customized in materials, with actuators and related automation accessories to different process conditions. It got a round inlet with an enlarged square outlet to avoid difficult solids will settle inside. An adaptor cone for the square outlet side can be supplied on request for weld or flange connection. Some sizes can also be supplied with standard flange pattern on the outlet side. As standard RKO is available in a stainless steel and a nodular iron version. The top works is solid to perform during long periods of time in horizontal high cycling applications.

The RKO is available from DN 100 up to DN 600 (4” to 24”). 

Further information is available in the product data sheets. 


Performance shut-off on heavy coarse reject

The straight bevel edged gate (1) efficiently cut through heavy coarse materials. The gate supports (2) assure gate guidance throughout the full stroke and support the gate in closed position to maintain a 100% liquid tight shut-off. The enlarged square outlet enable full release of difficult solids when cycling to open position. 

A first rate external sealing

Stafsjö’s TwinPack braids (3) perform the main external sealing operation in the system. The gland box is precision machined with tight tolerances to provide optimal room for the TwinPack braids while the gland (4) and position of stud bolts provide a uniform load. For the most challanging duties the gland sealing system can be reinforced with a box bottom scraper or with a double gland.


Extend the service life with an easy maintenance

The RKO is often installed on severe abrasive applications. Quick and easy maintenance is important. The retainer ring system enable an easy exchange of the seat  (5) and the gate supports (6) can also be switched over to new ones without dismantling the entire valve. With this solution it is easy to achieve low cost of ownership.

Contact us if you have any questions