2671

centric type

p. 2/14

Face to face:

Valve body are designed to meet ISO 5752 table 5 short.

Top works:

24" and below, valve mounting flange and stem shall be per ISO 5211.

28" and above, valve mounting flange per ISO 5211, stem shall be round keyed.

Flange requirement:

Wafer style, lug style

: ANSI 125/150. BS Table E. JIS 10K. DIN PN10. DIN PN16.

All wafers have locating holes for ease of installation.

Flange style

: ANSI 150. JIS10K. DIN PN10. DIN PN16

Pressure rating:

Bi-directional bubble-tight shut off to

230 PSI – 1½" to 24"

150 PSI – 26" to 40"

and tested to 110% of full rating

260 PSI – 1½" to 24"

160 PSI – 26" to 40"

Shell testing:

The body strength can stand 150% of full rating.

340 PSI – 1½" to 24"

220 PSI – 26" to 40"

Installation instructions:

The valve is designed for using between all types of flat or raised face flanges. DO NOT USE

FLANGE GASKETS. The butterfly valve design eliminates the need for gaskets. For proper instal-

lation, the space between flanges must be sufficient to permit valve insertion without disturbing the

rubber liner flange seal. Note that the disc sealing edge is in line with the flat of the shaft. Rotate

the stem to position the disc within the body, place the valve between flanges and hand-tighten the

bolts. SLOWLY OPEN the valve counterclockwise to check for adequate disc clearance. RETURN

THE DISC TO 10% OPEN POSITION and cross tighten all bolts, again check for adequate disc

clearance.

Stem retaining mechanism:

The stem is retained in the body by means of a special “Q” type design when the valve size is under

14", and hence the stem can be removed from the body and disc without any special tools.

*Unless you do intend to disassemble the valve, otherwise do not position the disc around 135°

Anti-Condensed:

(On customer's requirement)

Technical data (continued)