President Valves

DIAPHRAGM VALVES

WEIR TYPE BS 5156

D I M E N S I O N S (in mm)

Sizes ->	25	40	50	65	80	100	150	200	250	300
Face to face	127	159	191	216	254	305	406	521	635	749
Flange dia.	114	133	152	165	184	216	279	337	406	457
Handwheel dia.	82	108	133	191	194	241	311	483	584	710
App weight (kgs)	3.00	6.12	9.64	13.38	18.94	31.53	48.6	144	215	385
Tested to hyd. (P.S.I.)	250	150	150	150	150	125	100	75	50	50

LINING	TEMP	SPARK TEST
PTFE Teflon	170°C	5 kv
Glass	200°C	5 kv
Neoprene	130°C	20 kv
Ebonite	80°C	20 kv

D E T A I L S
MOC (body)	CI / CS / SS304 / SS316 / Alloy20
MOC (diaphragm)	Natural / Neoprene / Buty / Silicon / PTFE
Design	As per Suanders "A" Type
End connection	Screwed / Flanged to BS / ANSI / DIN Std
Operated by	Hand wheel / Cylinder
On Request (1)	Rising spindle as open / close Indicator
On Request (2)	Full flow way
On Request (3)	Flange generally as per B.S. 10. Table D and others on request.

S.No.	PART	MATERIAL OF CONSTRUCTION
1	Handle wheel	M S Plated
2	Screw	M S Plated
3	Bush	CI / MS / SS / GM
4	Spindle	Teflon PTFE
5	Compressor	SS304 / SS316
6	Bonnet	Teflon PTFE
7	Bolt & Nut	SS304 / SS316
8	Diaphragm	CI / MS / SS / GM
9	Linning	Ebonite / Neoprene / PTFE / Teflon
10	Body	CI IS. 210 FG 200

CI = Cast Iron CS = Cast Steel MS = Mild Steel SS = Stainless Steel(304/316) GM = Gun metal(copper alloy)