Cast Steel Double Block & Bleed 650DBB PN25/40 -Sizes 50mm to 150mm

FIG. 640 PN25/40 BLEED FLANGE WITH DRAIN OUTLET

        (SUPPLIED WITH BLANKING FLANGE)

PN25/40 RATED, SIZES 50mm to 150mm Body Material – Carbon steel to  BS EN 10028 161 – 430. (Details of sizes 200mm to 300mm upon request)

Fig. 640 PN25/40 Bleed Flange
SIZE	50	65	80	100	125	150
A	488	538	622	666	818	862
B	370	431	490	580	743	810
C	165	177	182	200	217	235
D	272	297	339	361	438	459
E	200	200	250	315	400	400
F	50	50	50	50	50	50
G	165	190	200	235	270	305
H	150	150	160	170	200	190
J	M16	M16	M16	M20	M24	M24
WGT. (kg)	50	65	80	100	125	150
650DBB	53	66	87	121	198	241
640	9	10	11	15	20	23

ALL DIMENSIONS ARE IN mm. WEIGHTS ARE APPROXIMATE.

 

 

 

SPECIFICATION: 

 Fig. 650 Parallel slide valves are supplied to PN25/40 rating.  Alternatively, valves can be supplied PN16 rated. ANSI 150/300 can also be supplied upon request.

Additional Fig. 640 Bleed Flanges are available for fitting downstream from the Fig. 650DBB Double Block & Bleed unit assembly to assist drainage of the system and to verify the closure of both of the double isolation valves and for end of line service capped with a blind flange c/w a drain valve.

The Fig. 640 bleed flange is an approved seal welded assembly, consisting of the body, extension tube and Ø15mm PN40 flange (or as specified by Customer) in certified carbon steel, B7 tie-rods with 2H nuts and 2spiral wound graphite filled gaskets (suitable for use on steam). Our 15mm Fig. 280 Cast steel globe stop valve, PN25/40 rated is available as a drain valve upon request.

The assembly can be supplied as a unit or in kit form or as a modification to existing valves on site. When assembled, the double block and bleed unit has a straight through, virtually full bore design, with only normal pressure drop and internal turbulence.