Standard Materials Brochure

STANDARD MATERIALS The VAMEIN butterfly valve is made up of the following components: BODY: ? Never in contact with the fluid. ? VAMEIN DE ESPAÑA, S.A. exclusive design enables you to fit the seat easily. MATERIALS: ? Ductile iron. EN-1563/ASTM A 395 M:88 ? Cast carbon steel ASTM A 216-93 Gr. WCB. ? Stainless steel ASTM A351-94 CF-8. (AISI-304). ? Stainless steel ASTM A351-94 CF-8M. (AISI-316). ? Bronze ASTM B-62-93. Alloy UNS Nº C 83600. ? Aluminium Bronze ASTM B-148. Alloy UNS Nº C 95800. ? Aluminium. Standard EN-1706. ? Other materials available on request: Hastelloy, Monel, Inconel, Titanium, Uranus B-6, etc. DISC: ? Designed to fit the seat perfectly giving you a watertight valve with low torques. ? Minimum drop pressure. ? DISC-SHAFT drive by means of torsion flats or square, with no pins, keyways, bolts or any other mechanical fixing device seriously complicating the valve disassembly as well as the spare parts replacement since it might be necessary to use special tools an machinery. MATERIALS: ? Ductile iron. EN-1563/ASTM A 395 M:88 ? Cast carbon steel ASTM A 216-93 Gr. WCB. ? Stainless steel ASTM A 351-94 CF-8. (AISI-304). ? Stainless steel ASTM A 351-94 CF-8M. (AISI-316). ? Bronze ASTM B-62. Alloy UNS Nº C 83600. ? Aluminium Bronze ASTM B-148. Alloy UNS Nº C 95800. ? Other materials available on request: Hastelloy, Monel, Inconel, Titanium, Uranus B-6, etc. SHAFT: ? Never in contact with fluid. ? The centred shaft system in relation to the body, plus its design, gives it a high resistance and permanent watertightness. ? From DN-50 mm to DN-300 mm (2" to 12") the shaft is made out of one piece, and from DN-350 mm (14") upwards in two. ? No pins, keyways or bolts going through for easy replacement and max flow. ? The shaft has been made so that it will direct connect with the actuators. MATERIALS: ? Stainless steel Standard EN-10.088.3 1.4021 (ASTM A 276 – AISI-420) from DN-50 mm up to DN-2000 mm. (2" to 80"). ? Other materials are available on request: AISI-304, AISI-316, AISI-431, Monel, Hastelloy, Titanium, Uranus B-6, Inconel, etc. SEAT: ? They are specially designed by VAMEIN DE ESPAÑA, S.A. to allow a perfect fit with the valve body, fully machined and making the valve completely watertight. Furthermore, the seat liner is perfectly positioned in the valve body to ensure minimal operational wear, minimum operation torque and a long life service. ? Its external "O-RINGS" allow a perfect seal with the flanges without requiring any additional joints. ? Shaft It is perfectly watertight due to "O-RINGS" moulded seals to seal the shaft. MATERIALS: ? Ethylene propylene. EPDM. ? Nitrile (Buna-N). ? Butyl. ? Hypalon. ? Neoprene. ? Viton®. ? Silicone. ? Food natural rubber. ? Antiabrasive natural rubber. ? Others on request. BUSHING: ? The bushings absorb the lateral pressure applied on the disc by the flow of the fluid and on the shafts by the eccentrically mounted actuators. ? Good sliding properties. ? Low friction coefficient, low wear, long life. ? Hardly any maintenance needed. ? NYLON-6 up to DN-500 mm (20”). (Includes retention ring for shafts). ? Bronze ASTM B-62. Alloy UNS Nº C 83600 from DN-600 mm (24"). BODY-SHAFT WATERTIGHTNESS SEAL “CHEVRON” TYPE: ? VAMEIN DE ESPAÑA, S.A. exclusive design gives double watertightness, inside and outside the valve and the contact areas between the body and shaft. ? BUNA-N rubber for all manufacture range, other materials are available on request. SHAFT RETENTION RING: ? This safety ring makes sure that the shaft stays in place, enabling you to replace the actuator without removing the valve from line. ? Nylon-6 bushing-shaft retention ring ? (8-Shaped) from DN-50 through DN-200 (2"-8"). ? Nylon-6 bushing-shaft retention ring from DN-250 through DN-500 (10"-20") ? Steel shaft retention ring from DN-600 through DN-2000 (24"-80")