描述
Cameron Demco Butterfly Valves Series NE-D wafer 5 inch
Demco butterfly valves are engineered for oil and gas drilling operations, covering a full size range from 2″ (50 mm) to 24″ (600 mm). The product line features modular designs across multiple series (NE-C, NE-I, NE-D), connection types (wafer, lug), and material options, ensuring compatibility with high-pressure, corrosive environments. Below is a detailed overview of core components and their model numbers:
1. Body Systems
Demco provides three main body series (NE-C, NE-I, NE-D) with wafer and lug connections, available in ASTM A395 ductile iron, ASTM B148 aluminum bronze, ASTM A216 WCB steel, and ASTM A351 stainless steel:
NE-C Series (2″–12″)
- Wafer Connection(ASTM A395 ductile iron, -011):
2″ (22137-011), 2½” (22138-011), 3″ (22139-011), 4″ (22140-011), 5″ (22141-011), 6″ (22142-011), 8″ (22143-011), 10″ (22144-011), 12″ (22145-011).
- Lug Connection(ASTM A395 ductile iron, -051):
2″ (21986-051), 2½” (21987-051), 3″ (21988-051), 4″ (21989-051), 5″ (21990-051), 6″ (21991-051), 8″ (21992-051), 10″ (21993-051), 12″ (21994-051).
NE-I Series (2″–12″)
- Wafer Connection(Multi-material: ASTM A395 -011, ASTM B148 -013, ASTM A216 -014, ASTM A351 -018):
2″ (22681-01X), 2½” (22682-01X), 3″ (22683-01X), 4″ (22684-01X), 5″ (22685-01X), 6″ (22686-01X), 8″ (22687-01X), 10″ (22688-01X), 12″ (22689-01X).
- Lug Connection(Multi-material: ASTM B148 -053, ASTM A216 -054, ASTM A351 -058):
2″ (22695-05X), 2½” (22696-05X), 3″ (22697-05X), 4″ (22698-05X), 5″ (22699-05X), 6″ (22700-05X), 8″ (22701-05X), 10″ (22702-05X), 12″ (22703-05X).
NE-D Wafer (2″–12″)
(ASTM A395 ductile iron, -0X1):
2″ (22187-021), 2½” (22682-011), 3″ (20594-021), 4″ (22189-021), 5″ (22190-021), 6″ (22191-021), 8″ (22687-011), 10″ (22192-021), 12″ (22689-011).
Extended Sizes (14″–24″)
- Lug Connection(Ductile iron, -051):
14″ (23827-051), 16″ (23911-051), 18″ (23901-051), 20″ (23891-051), 24″ (23875-051).
- Wafer Connection(Ductile iron, -012):
14″ (23825-011), 16″ (23907-011), 18″ (23899-011), 20″ (23881-011), 24″ (23873-011).
2. Seat Sealing
Seats are available in Buna-N, FKM, EPDM, and natural rubber, tailored to temperature and chemical resistance requirements:
Standard Sizes (2″–12″)
1786-XXX (2″), 1788-XXX (2½”), 1790-XXX§§ (3″), 1792-XXX (4″), 1794-XXX (5″), 1002-XXX (6″), 1798-XXX (8″), 1815-XXX (10″), 1817-XXX (12″).
Materials: Buna-N (-031), FKM (-034), EPDM (-135), natural rubber (-036).
Extended Sizes (14″–24″)
23829-03X (14″/16″/18″/20″), 7103-03X (24″).
Materials: Buna-N (-031), FKM (-034), EPDM (-X35).
3. Disc Regulation
Discs cover 200 psi, 285 psi pressure ratings and throttling applications, with materials including 316 SS, nickel-plated ductile iron, aluminum bronze, and ZPEX ductile iron:
Standard Sizes (2″–12″)
- 200 psi: 22045-0XX (2″), 22046-0XX (2½”), 22047-0XX (3″), 22048-0XX (4″), 22049-0XX (5″), 22050-0XX (6″), 22051-0XX (8″), 22052-0XX (10″), 22053-0XX (12″) (316 SS -002, nickel-plated ductile iron -005, etc.).
- 285 psi: 22196-0XX (2″), 22197-0XX (2½”), 22198-0XX (3″), 22199-0XX (4″), 22200-0XX (5″), 22201-0XX (6″), 22202-0XX (8″), 22203-0XX (10″), 22204-0XX (12″) (aluminum bronze -014).
- Throttling: 22214-0XX (2″), 22215-0XX (2½”), 22216-0XX (3″), 22217-0XX (4″), 22218-0XX (5″), 22219-0XX (6″), 22220-0XX (8″), 22221-0XX (10″), 22222-0XX (12″) (316 SS -002, nickel-plated ductile iron -005, aluminum bronze -014, ZPEX ductile iron).
Extended Sizes (14″–24″)
- 150 psi: 23830-0XX (14″), 23915-0XX (16″), 23905-0XX (18″), 23895-0XX (20″), 23877-0XX (24″) (316 SS -002).
- 285 psi: 25309-0XX (14″), 25310-0XX (16″), 25311-0XX (18″), 25312-0XX (20″), 25313-0XX (24″) (aluminum bronze -014).
- PVF-Coated (Nickel-Plated): 24460-001 (14″), 24461-001 (16″), 24462-001 (18″), 24463-001 (20″), 24464-001 (24″) (nickel-plated iron -005).
4. Stem Assembly
Stems (upper and lower) support NE-C, NE-I, NE-D series and Utility top configurations, with materials 416 SS (-001) or 316 SS (-002) for high strength and corrosion resistance:
Standard Sizes (2″–12″)
- Upper Stem (NE-C): 22066-00X (2″), 22067-00X (2½”), 22067-00X (3″), 22068-00X (4″), 22069-00X (5″), 22069-00X (6″), 22070-00X (8″), 22071-00X (10″), 22072-00X (12″).
- Upper Stem (NE-I/NE-D): 22073-00X (2″), 22074-00X (2½”), 22074-00X (3″), 22075-00X (4″), 22076-00X (5″), 22076-00X (6″), 22077-00X (8″), 22078-00X (10″), 22079-00X (12″).
- Utility Top (NE-C): 22334-00X (2″), 22335-00X (2½”), 22335-00X (3″), 22336-00X (4″), 22337-00X (5″), 22337-00X (6″), 22338-00X (8″), 22339-00X (10″), 22340-00X (12″).
- Utility Top (NE-I): 22341-00X (2″), 22342-00X (2½”), 22342-00X (3″), 22343-00X (4″), 22344-00X (5″), 22344-00X (6″), 22345-00X (8″), 22346-00X (10″), 22347-00X (12″).
- Lower Stem: 22080-00X (2″), 22081-00X (2½”), 22081-00X (3″), 22082-00X (4″), 22083-00X (5″), 22083-00X (6″), 22084-00X (8″), 22085-00X (10″), 22086-00X (12″) (material matches upper stem).
Extended Sizes (14″–24″)
- Upper Stem: 23833-00X (14″), 23917-00X (16″), 23897-00X (18″), 23897-00X (20″), 23879-00X (24″) (416 SS -001, 316 SS -002).
- Lower Stem: 23834-00X (14″), 23918-00X (16″), 23898-00X (18″), 23898-00X (20″), 23880-00X (24″) (material matches upper stem).
5. Auxiliary Components
Auxiliary parts (spring pins, retainers, O-rings, bearings) ensure system reliability with standardized models for interchangeability:
Spring Pins (2 pcs, 302 SS)
- 2″–4″: 5448-18720; 5″–6″: 5448-18724; 8″–12″: 5448-25028.
- 14″: 5446-25040; 16″: 5446-25040; 18″–20″: 5446-25048; 24″: 5446-25064.
Retainers (Stainless Steel/Steel)
- 2″–3″: 22117; 4″: 13704; 5″–8″: 13705; 10″: 13706; 12″: 13707.
- 14″: 5502-137; 16″: 5502-150; 18″–20″: 5502-175; 24″: 24470.
O-Rings (Buna-N)
- Top O-ring: 2″–3″ (5526-114), 4″ (5526-115), 5″–8″ (5526-117), 10″ (5526-119), 12″ (5526-125).
- Stem O-ring: 2″ (5526-113), 2½”–3″ (5526-115), 4″ (5526-116), 5″–8″ (5526-212), 10″ (5526-214), 12″ (5526-220).
- Disc O-ring (Extended Sizes): 14″ (5526-220), 16″ (5526-223), 18″–20″ (5526-328), 24″ (5526-331).
Bearings (Bronze, 2 pcs for Upper/1 pc for Lower)
- Upper Bearing: 2″ (22526-001), 2½”–3″ (22118-001), 4″ (13112-001), 5″–8″ (13115-001), 10″ (13116-001), 12″ (13117-001), 14″ (5086-044), 16″ (5086-050), 18″–20″ (5086-048), 24″ (5086-046).
- Lower Bearing: 2″ (5086-045), 2½” (5086-051), 3″ (5086-049), 4″–20″ (5086-049), 24″ (5086-047).
Demco butterfly valves deliver precise fluid control for oil and gas drilling through a comprehensive range of standardized models (2″–24″), material customization, and structural adaptability. The interchangeable components ensure operational efficiency, while robust materials and designs guarantee reliability in high-pressure, corrosive environments.
