Technical Features. Vamein de España, S.A.

The butterfly valve is one of the most widely used devices for fluid control.

The high quality of the VAMEIN butterfly valve is fruit of the experience of the Company in this field, as well as of the continuous progress and controls in the selection of material quality, casting, machining and testing.

The spectacular progress in the design and in the field of liners has allowed VAMEIN DE ESPAÑA, S.A. to conceive and to make a full range of watertight butterfly valves, able to satisty most of the needs of the sector.

Explosion drawings.

FIG. 1 1 7 - P - E

A - BODY TYPE
1	2	3(*)	4(*)	5
WAFER	FLANGED	SPLIT BODY	SINGLE-FLANGE	LUG

B - BODY MATERIALS
GENERIC	EN STANDARD	ASTM STANDARD	COATING
0. Cast Iron	1561 JL-1040	A 126 Class B	EPOXY
1. Ductile Iron	1563 JS-1030	A 395	RILSAN-EPOXY (1)
2. Cast Steel	10213 1.0619	A 216 WCB	RILSAN-EPOXY (1)
3. Aluminium Bronze	1982 CC333G	B 148 C95500	NO COATING
4. Stainless Steel 18/8	10283 1.4308	A 351 CF8	NO COATING
5. Stainless Steel 18/8/2	10283 1.4408	A 351 CF8M	NO COATING
6. Aluminium	1706 AC44100	B 179 S12C	RILSAN
7. Ductile Iron Ni Resist			RILSAN-EPOXY (1)
8. Alloy Steel		WC1, WC6, etc.	RILSAN-EPOXY (1)
9. Bronze	1982 CC491k	B 62 C83600	NO COATING

(1): Rilsan coating from DN-50 to DN-300; Epoxy coating for DN-350 and above

C - DISC MATERIALS
GENERIC	EN STANDARD	ASTM STANDARD	COATING
0.
1. Ductile Iron	1563 JS-1030	A 395	EPOXY
2. Cast Steel	10213 1.0619	A 216 WCB	EPOXY
3. Aluminium Bronze	1982 CC333G	B 148 C95500	NO COATING
4. Stainless Steel 18/8	10283 1.4308	A 351 CF8	NO COATING
5. Stainless Steel 18/8/2	10283 1.4408	A 351 CF8M	NO COATING
6. Ductile Iron	15630JS-1030	A 395	(2)
7. Ductile Iron	15630JS-1030	A 395	RILSAN
8. Cast Steel	10213 1.0619	A 216 WCB	RILSAN
9. Bronze	1982 CC491k	B 62 C83600	NO COATING

(2): Special coatings required by the customer

D - ACTUATORS
P	RS	MF	ND	NS	SE	HD	HS
Lever	Gearbox	Tee square operator	Double acting pneumatic actuator	Spring return pneumatic actuator	Electric actuator	Double acting hydraulic actuator	Spring return hydraulic actuator

E - LINER MATERIALS

B

E

H

N

NA

NE

S

V

NB

CB

CA

EC

EA

Butyl

EPDM

Hypalon

NBR

Natural rubber

Neoprene

Silicon

VITON

White NBR

Non toxic Natural rubber

Anti-abrasive natural rubber

High temperature EPDM

Non toxic EPDM

Note: For materials, coatings or actuators other than those listed above, please contact our Technical Department.

(*): Especial execution. Ask for availability.

EXAMPLE ON HOW TO USE THE CODE

This is a VAMEIN butterfly valve with the following features:

A -Wafer type. 100 series.

B -Ductile Iron Body ASTM A 395.

C -Stainless Steel Disc 18/8/2 ASTM A 351 Gr.CF.8M (AISI-316).

D -Gear Box actuator.

E -EPDM seat.

Vamein de España, S.A. will not guarantee and will assume no responsibility for the behaviour of the materials recommended by our commercial Personnel or by our literature as there are innumerable factors that might combine in each particular workplace. Only the customer, the Technical Department of the project and/or Consultant are responsible for their selection. In case of doubt we suggest to test first.

TORQUE TABLE

The flow of a liquid through a partially open butterfly valve disc creates a force on the disc which tends to close it; this is called "Dynamic Torque". For valves smaller than DN-150 mm (6") this dynamic torque does not usually have an important effect.

For valves starting from DN-200 mm (8"), the Dynamic Torque must be taken into account when choosing the actuators. This is why manual actuators are recommended for valves starting from this Nominal Diameter.

The maximum normal torques are those when the valves are working at their best and driving conditions in a normal line. The normal torque necessary to operate a valve varies on the service conditions, as well as on the time in service and the frequency it is used.

NOMINAL DIAMETER		WORK PRESURE	10 bar	16 bar	150p.s.i.	225p.s.i.
mm	iNCHES	Units	N·m	N·m	Lb x Inch .	Lb x Inch .
50	2"		15	15	133	133
65	2½"		20	20	177	177
80	3"		25	25	221	221
100	4"		40	40	354	354
125	5"		50	50	443	443
150	6"		60	60	531	531
200	8"		160	160	1.416	1.416
250	10"	T	250	250	2.213	2.213
300	12"	O	300	300	2.655	2.655
350	14"	R	900	1.350	7.965	11.948
400	16"	Q	1200	1.800	10.620	15.930
450	18"	U	1650	2.400	14.603	21.240
500	20"	E	2300	3.500	20.355	30.975
600	24"	S	4100	6.150	36.285	54.428
700	28"		5500	8.250	48.675	73.013
750	30"		6500	9.500	57.525	84.075
800	32"		8100	12.150	71.685	107.528
900	36"		10.000	15.000	88.500	132.750
1.000	40"		13.500	20.000	119.475	177.000
1.050	42"		14.200	21.300	188.505	125.670
1.100	44"		15.000	22.000	132.750	194.700
1.200	48"		16.500	24.500	146.025	216.825

N.B: Torques listed in the above table are for guidance only and have been calculated for a constant working pressure and conditions. Torques valid for "VAMEIN" butterfly valves with synthetic EPDM or NITRILE rubber seats and water at ambient temperature (20º C approx.). As torques shown in this table were obtained on static testing bench it is necessary to take into account the dynamic conditions of the fluid for each specific line (velocity, flow, cavitation, hydraulic factors, etc) for the hydrodynamic stress created by the flow on the valve disc. The VAMEIN butterfly valve is designed to work with fluids, which act like lubricants. For air or gas service, torques are considerably higher, at least 35 %. In this case, please contact our Technical Department to analyze the situation. For Nominal Diameters bigger than those specified in the table, contact our Technical Department.