HighPerformanceButterfly Valve ® MODEL SLHBF & SLHBFFS 150 TO 1500 CLASS STANDARD AND FIRESAFE • Metal seating for high pressure rating with teflon (other materials available) insert for bubble tight shut off. • Wafer style to fit between ANSI 150# to 600# flanges is standard. (Corresponding classes will also fit table E, F, H & J as design OD and oval lug holes allows placement between both). Lugged type also available. • Easily actuated with air or electric actuator. • Quarter turn operation with lever & notch plate as standard. Gear operated as standard on 250NB and over in 150 class, 200NB and over in 300 class, 150NB and over in 600 class. • Can also be used for flow control, linear flow characteristics between 30 Deg and 70 Deg of opening. PRINCIPLE OF VALVE DESIGN The standard SLHBF/SLHBFFS design is double offset (double eccentric). Triple eccentric (triple offset) style is also available for class VI metal seated design. The basic concept of the SLHBF/SLHBFFS is to only utilise a thin slice of a ball valve at the seat ring area. The body is only wide enough to hold the disc, shaft and seat in place, all the remaining material is eliminated because it serves no purpose. Ball valves have 2 seats, but floating balls only seal on the upstream seat hence the sealing effectiveness of a HP Butterfly Valve is the same. The disc seating edge is a segment of a sphere and creates a reliable, high - pressure seal against an uninterrupted 360 o seat sealing surface. The disc profile is very thin and allows maximum flow with low pressure drop. The most common use of the SLHBF/SLHBF FS is to shut-off flow inside a pipeline. Every component of the valve is designed to contribute to this goal. The disc, shaft, bearings, packing and disc pins all work together to ensure that the disc is accurately positioned when closed to allow the seat to energise to the disc and create a seal. This catalogue is general in it’s nature and the design and materials can change at any time. This catalogue is to be used as a guide only. page 2
FIGURE NUMBER ® SLHBF - A L J B R - MODEL RATINGS END CONNECTIONS SLHBF Standard model SLHBFFS Firesafe model A = 150 CLASS B = 300 CLASS C = 600 CLASS D = 900 CLASS E = 1500 CLASS F = BST-E G = BST-F H = BST-H Z = Special EXAMPLE - SLHBF-1LJBR Standard Model 150LB Lug type CF8M Stainless steel body F316 Trim RPTFE Seat insert Double offset design L = W = F = LUG TYPE WAFER TYPE FLANGED BODY MATERIALS A = WCB B = WC1 C = WC6 D = WC9 E = C-5 F = C-12 G = LCB H = LC3 I = CF8 J = CF8M K = CF3 L = CF3M M = CF8C N = CN7M TRIM MATERIALS SEAT DESIGN A = F304 B = F316 C = F316L D = F304L E = F321 F = ALLOY-20 G = MONEL H = HASTELLOY I = OTHERS SEAT R = RPTFE P = PTFE C = CARBON FILLED PTFE M = METAL CLASS VI SHUT OFF N = METAL CLASS IV* SHUT OFF P = METAL CLASS V SHUT OFF S = SPECIAL MODIFIED BLANK = DOUBLE OFFSET (DOUBLE ECCENTRIC) T = TRIPLE ECCENTRIC* FIRESAFE DESIGN RTFE + LIP SEAT FIRESAFE DESIGN LAMINATED SEAT RPTFE + 316 METAL SEAT DESIGN SOFT SEAT DESIGN (NON FIRESAFE) METAL SEAT INSERT (RETAINER) RTFE SEAT SEAL RING ON DISC METAL SEAT INSERT (RETAINER) METAL SPACER INSERT (RETAINER) RTFE SEAT SEAL RING ON BODY 1. Double sealing construction - Primary RTFE seat (Non-fire) - Secondary metal seat (during and after fire) 2. Excellent sealing in Bi-directions 3. Conforms to API607 5th Edition 1. Double sealing construction - Primary RTFE seat (Non-fire) - Secondary metal seat(during and after fire) 2. Excellent sealing in Bi-directions 3. Conforms to API607 5th Edition 1. High temperature capability allows maximum of 620 O C (1150 O F) 2. High pressure capability 3. Stainless steel sealing area is able to prevent corrosion and rust 4. Firesafe in class VI* shutoff 1. Reinforced PTFE 2. Excellent sealing in both directions 3. Cost effective page 3 * In class VI metal seated a triple eccentric (triple offset) design is required, actual drawing supplied on request.