DEMCO Series NE-I Wafer Butterfly Valve, 4″, 200 psi
4″ (100 mm) DEMCO Series NE-I wafer butterfly valve, 200 psi drop-tight in an ASME Class 150 body. 4 Cameron part numbers: ductile iron body, 316 stainless steel and aluminium bronze discs, Buna-N, Natural rubber and Viton (FKM) seats.
Key features
- Series: NE-I
- Body configuration: Wafer
- ASME pressure class: ASME Class 150 (285 psi non-shock body rating)
- Series
- NE-I
- Body configuration
- Wafer
- Sanitary / FDA service
- no
- Size range
- 4″ (100 mm)
- ASME pressure class
- ASME Class 150 (285 psi non-shock body rating)
- Operating temperature range
- Buna-N: 0°F to +180°F (−18°C to +82°C); Viton (FKM): +20°F to +300°F (−7°C to +149°C); natural rubber: confirm for your service
Product description
The 4″ (100 mm) DEMCO Series NE-I wafer 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 4 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 |
|---|---|---|---|---|
J022131-1112311 | Ductile iron | 316 stainless steel | 416 stainless steel | Buna-N |
J022131-1112361 | Ductile iron | 316 stainless steel | 416 stainless steel | Natural rubber |
J022131-1114311 | Ductile iron | Aluminium bronze | 416 stainless steel | Buna-N |
J022131-1114341 | Ductile iron | Aluminium bronze | 416 stainless steel | Viton (FKM) |
Trim is read from the part number using DEMCO's ordering table. Confirm against the nameplate when we quote.
Reading the part number
Take J022131-1112311. J022131 is the DEMCO base number for a 4″ Series NE-I valve at 200 psi. The suffix is read left to right: body configuration (1 = wafer), body material (1 = ductile iron), stem (1 = 416 stainless steel), disc (2 = 316 stainless steel) and seat (31 = Buna-N). 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).
- Buna-N seat: 0°F to +180°F (−18°C to +82°C).
- Viton (FKM) seat: +20°F to +300°F (−7°C to +149°C).
- Natural rubber seat: confirm the temperature limit for your fluid when we quote.
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 wafer body is clamped between two ASME Class 125/150 flanges on through-bolts and self-centres on the bolt pattern. It is not rated for end-of-line service — choose the lug body if the valve must hold pressure with the downstream pipe removed.
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 | Wafer |
| Sanitary / FDA service | no |
| Cameron part numbers | J022131-1112311, J022131-1112361, J022131-1114311, J022131-1114341 |
Dimensions
| Parameter | Value |
|---|---|
| Size range | 4″ (100 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 | Buna-N: 0°F to +180°F (−18°C to +82°C); Viton (FKM): +20°F to +300°F (−7°C to +149°C); natural rubber: confirm for your service |
| Vacuum rating | 29.9 in Hg (sealed against 10 microns) |
| End-of-line service capable | no |
| 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 |
| Disc material options | 316 stainless steel, aluminium bronze |
| Seat elastomer options | Buna-N, natural rubber, Viton (FKM) |
Shipping & lead time
What does DEMCO part number J022131-1112311 mean?▾
Can the 4″ NE-I wafer 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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