Extended Long Stem DEMCO BUTTERFLY VALVE

DEMCO Butterfly Valves are excel design in a variety of applications, cast in both wafer and lug patterns, which features a one-piece body for minimum weight and maximum strength and unique stem hole to ensure a dry stem work. Available in sizes 2” through 48”. Application in a wide range of industries: Chemical and petro-chemical, Agriculture, Oil and gas drilling and production, Food and beverage, Water and waste water, Cooling towers, Power, Mining, Marine, etc.

BETTER could provide DEMCO copy butterfly valves in full series, NE-C, NE-I, NE-D, NE-I with extension stem, NE-C lug with actuator, also supply the replaceable spare parts of body, seat, disc, upper stem, lower stem, spring pin, retainer, o-ring, bearing.
Parts List for Series NE-C, NE-I and NE-D
2” 2-1/2” 3” 4” 5” 6” 8” 10” 12” No. (50 mm) (65 mm) (80 mm) (100 mm) (125 mm) (150 mm) (200 mm) (250 mm) (300 mm) 1 Body NE-C Wafer Options 22137-012 22138-012 22139-012 22140-012 22141-012 22142-012 22143-012 22144-012 22145-012 ASTM A48 Gray Iron -012 NE-C Lug 21986-051 21987-051 21988-051 21989-051 21990-051 21991-051 21992-051 21993-051 21994-051 Options ASTM A395 Ductile Iron -051 NE-I Wafer 22681-01x 22682-01x 22683-01x 22684-01x 22685-01x 22686-01x 22687-01x 22688-01x 22689-01x Options ASTM A395 Ductile Iron -011, ASTM B148 Aluminum Bronze -013, ASTM A216 WCB Steel -014, ASTM B179 Aluminum -015, DI/ENC -016, ASTM A351 SS -018 NE-I Lug 22695-05x 22696-05x 22697-05x 22698-05x 22699-05x 22700-05x 22701-05x 22702-05x 22703-05x Options ASTM B148 Aluminum Bronze -053, ASTM A216 WCB Steel -054, ASTM A351 SS -058 NE-D Wafer 22187-021 22682-011 20594-021 22189-021 22190-021 22191-021 22687-011 22192-021 22689-011 Options ASTM A395 Ductile Iron -0x1 2 Seat 1786-xxx 1788-xxx 1790-xxx6 1792-xxx 1794-xxx 1002-xxx 1798-xxx 1815-xxx 1817-xxx Options Buna-N -031, Black Neoprene -032, Hypalon7 -033, FKM -034, EPDM1 -135, Natural Rubber -036 White Neoprene -037, Peroxide-Cured Buna-N -231, Fluorosteam -244, ETM-30230 -3313” NE-D Seat (See Below 6) 3 Disc 200 psi 22045-0xx 22046-0xx 22047-0xx 22048-0xx 22049-0xx 22050-0xx 22051-0xx 22052-0xx 22053-0xx 285 psi 22196-0xx 22197-0xx 22198-0xx 22199-0xx 22200-0xx 22201-0xx 22202-0xx 22203-0xx 22204-0xx 50 psi 22205-0xx 22206-0xx 22207-0xx 22208-0xx 22209-0xx 22210-0xx 22211-0xx 22212-0xx 22213-0xx Throttling 22214-0xx 22215-0xx 22216-0xx 22217-0xx 22218-0xx 22219-0xx 22220-0xx 22221-0xx 22222-0xx Options 316 SS -002, Monel -003, Nickel-Plated Ductile Iron -005, Alloy 202 -007, Hastelloy C7 -008, Aluminum Bronze3 -014 PVF-Coated, 200 psi 22714-001 22715-001 22716-001 22717-001 22718-001 22719-001 22720-001 22721-001 22722-001 4 Upper Stem NE-C 22066-00x 22067-00x 22068-00x 22069-00x 22070-00x 22071-00x 22072-00x NE-I 22073-00x 22074-00x 22075-00x 22076-00x 22077-00x 22078-00x 22079-00x NE-D 22073-00x 22074-00x 22193-00x 22194-00x 22195-00x 22077-00x 22078-00x 22079-00x Upper Stem NE-C 22334-00x 22335-00x 22336-00x 22337-00x 22338-00x 22339-00x 22340-00x -Utility Top NE-I 22341-00x 22342-00x 22343-00x 22344-00x 22345-00x 22346-00x 22347-00x 6 Lower Stem 22080-00x 22081-00x 22082-00x 22083-00x 22084-00x 22085-00x 22086-00x Stem Material Options 416 SS -001, 316 SS4 -002, Monel7 -003 7 Spring Pin (2) 302 SS 5448-18720 5448-18724 5448-25028 14 Retainer Stainless Steel 22117 13704 13705 13706 13707 22 Top O-ring Buna-N 5526-114 5526-115 5526-117 5526-119 5526-125 23 Stem O-ring5 Buna-N 5526-113 5526-115 5526-116 5526-212 5526-214 5526-220 24 Bearing (2) Bronze 22526-001 22118-001 13112-001 13115-001 13116-001 13117-001

 
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Att.: Mike Lee
BETTER Drilling Fluid Equipment Industrial Limited
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