DEMCO Series NE-I Lug Butterfly Valve, 2½″, 200 psi
2½″ (65 mm) DEMCO Series NE-I lug butterfly valve, 200 psi drop-tight in an ASME Class 150 body. 2 Cameron part numbers: ductile iron body, aluminium bronze disc, Viton (FKM) and Buna-N seats.
Key features
- Series: NE-I
- Body configuration: Lug
- ASME pressure class: ASME Class 150 (285 psi non-shock body rating)
- Series
- NE-I
- Body configuration
- Lug
- Sanitary / FDA service
- no
- Size range
- 2½″ (65 mm)
- ASME pressure class
- ASME Class 150 (285 psi non-shock body rating)
- Operating temperature range
- Viton (FKM): +20°F to +300°F (−7°C to +149°C); Buna-N: 0°F to +180°F (−18°C to +82°C)
Product description
The 2½″ (65 mm) DEMCO Series NE-I lug butterfly valve is the short-neck, standard-installation member of the DEMCO family, built for ASME Class 125/150 flanges with the widest choice of body materials in the range. This page lists the 2 factory configurations we can supply in this size, each identified by its Cameron part number, with the body, disc, stem and seat it was built with. Every one is rated for 200 psi drop-tight, bi-directional shut-off in an ASME Class 150 body.
Configurations available
| Part number | Body | Disc | Stem | Seat |
|---|---|---|---|---|
J022129-5114341 | Ductile iron | Aluminium bronze | 416 stainless steel | Viton (FKM) |
J022129-5124311 | Ductile iron | Aluminium bronze | 316 stainless steel | Buna-N |
Trim is read from the part number using DEMCO's ordering table. Confirm against the nameplate when we quote.
Reading the part number
Take J022129-5114341. J022129 is the DEMCO base number for a 2½″ Series NE-I valve at 200 psi. The suffix is read left to right: body configuration (5 = lug), body material (1 = ductile iron), stem (1 = 416 stainless steel), disc (4 = aluminium bronze) and seat (34 = Viton (FKM)). The last character is the operator code.
Performance
- Body rating: ASME Class 150 (285 psi non-shock).
- Shut-off: 200 psi drop-tight, identical from either flow direction.
- Vacuum: sealed against 10 microns (29.9 in Hg).
- Viton (FKM) seat: +20°F to +300°F (−7°C to +149°C).
- Buna-N seat: 0°F to +180°F (−18°C to +82°C).
Construction
- Hard-backed cartridge seat: the elastomer is bonded to a rigid backing ring and can be replaced in the field without special tools.
- Triple stem seal and a dry stem journal keep line fluid out of the stem bore.
- Floating disc centres itself in the seat; the stem is blowout-proof.
- Double-D upper stem and DEMCO top flange accept the full DEMCO actuation range.
- MSS SP-25 marking on every valve.
Installation
The lug body has threaded bolt holes, so the valve can stay in service as an end-of-line isolator with the downstream pipe removed, up to the 200 psi shut-off rating. Use weld-neck or socket flanges upstream in that duty; slip-on and threaded flanges are not supported.
Operators
The DEMCO top flange takes the 10-position locking handle, worm-gear operator and Series DR pneumatic actuators. Confirm the operator supplied with each part number when we quote.
Supply
Supplied from surplus stock through our supply network. Quantity, unit condition and any documentation are confirmed on the quotation. Put the part number, quantity and delivery point on your RFQ. For the full Series NE-I range, including sizes and trims not listed here, see the DEMCO Series NE-I series page.
Identification
| Parameter | Value |
|---|---|
| Series | NE-I |
| Body configuration | Lug |
| Sanitary / FDA service | no |
| Cameron part numbers | J022129-5114341, J022129-5124311 |
Dimensions
| Parameter | Value |
|---|---|
| Size range | 2½″ (65 mm) |
Performance
| Parameter | Value |
|---|---|
| ASME pressure class | ASME Class 150 (285 psi non-shock body rating) |
| Drop-tight shut-off ratings | 200 psi drop-tight, bi-directional |
| Operating temperature range | Viton (FKM): +20°F to +300°F (−7°C to +149°C); Buna-N: 0°F to +180°F (−18°C to +82°C) |
| Vacuum rating | 29.9 in Hg (sealed against 10 microns) |
| End-of-line service capable | yes |
| Actuation options | Lever handles (10-position, 2-position, memory-stop, square nut), weatherproof worm-gear operators, Series DR double-acting and spring-return pneumatic actuators |
Compliance
| Parameter | Value |
|---|---|
| End-connection / flange standard | ASME Class 125/150 flanges (raised- or flat-face) |
Construction
| Parameter | Value |
|---|---|
| Body material options | Ductile iron |
| Stem material options | 416 stainless steel, 316 stainless steel |
| Disc material options | Aluminium bronze |
| Seat elastomer options | Viton (FKM), Buna-N |
Shipping & lead time
What does DEMCO part number J022129-5114341 mean?▾
Can the 2½″ NE-I lug valve be used at the end of a line?▾
Which seat should I choose?▾
Can I fit a gear operator or actuator?▾
Is this valve fire-safe or NACE rated?▾
What condition are these valves supplied in?▾
Shipped worldwide from our Dubai warehouse. Transit, routes and documentation for 126 destinations
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