Butt-Weld Conical Seat Union
Butt-Weld Conical Seat Union designed with Butt-Weld Ends with Conical Union Seat connections for industrial stainless steel threaded piping. Constructed as a three-Piece Demountable Conical Seat Union with Central Hexagon Nut (Investment Cast) in 316 (CF8M) Stainless Steel. Available across nominal sizes 1/8"–2".
Material | 316 (CF8M) Stainless Steel |
|---|---|
Connection Ends | Butt-Weld Ends with Conical Union Seat |
Body Construction | Three-Piece Demountable Conical Seat Union with Central Hexagon Nut (Investment Cast) |
Nominal Size Range | 1/8"–2" |
Reference Standard | Generally in accordance with ISO 4144 (150 LB series) |
Size
Product overview
Connection Geometry & 316 Stainless Steel Construction
This butt-weld conical seat union features three-piece demountable conical seat union with central hexagon nut (investment cast) in a straight inline union profile, providing Butt-Weld Ends with Conical Union Seat connections for modular stainless steel piping, equipment hookups, and manifold assemblies. Manufactured in 316 (CF8M) Stainless Steel, the fitting offers molybdenum-bearing austenitic corrosion resistance suited for process water, chemical transfer, utility air, and washdown environments.
Size Coverage & Thread Assembly
Dimensioned generally in accordance with ISO 4144 (150 LB series) as stated on the series datasheet (a reference dimensional design rather than full standard certification). The series covers nominal sizes across 1/8"–2". Refer to the dimensional schedule on this product page to match each thread size against its corresponding envelope length, outside diameter or across-flats width, and unit weight. Before installing this butt-weld conical seat union, verify that your mating ports match the Butt-Weld Ends with Conical Union Seat interface and select an appropriate thread sealant or gasket for the joint. Specify the required nominal size from 1/8"–2" and confirm installation clearance when ordering.
Technical specifications
Specifications
- Manufacturing & Standards Reference
- Investment cast, generally manufactured to ISO 4144 or above.
Dimensions · CH-F027
Applies only to the listed references; other material or end forms are outside this scope.
Units: SIZE: nominal pipe size; KG EACH: kg per piece. Length units appear beside applicable values.
| Nominal size | Chelsey reference | A | H | D | S | Unit weight (kg) |
|---|---|---|---|---|---|---|
| 1/8 | CH-F027-001 | 40 | 14 | 10.29 | 29 | 0.08 |
| 1/4 | CH-F027-002 | 38 | 13.5 | 13.72 | 29 | 0.07 |
| 3/8 | CH-F027-003 | 38.5 | 14.5 | 17.15 | 34 | 0.08 |
| 1/2 | CH-F027-004 | 40 | 14.5 | 21.34 | 37.5 | 0.11 |
| 3/4 | CH-F027-005 | 41 | 14 | 26.67 | 44.5 | 0.14 |
| 1 | CH-F027-006 | 47 | 17 | 33.4 | 53.5 | 0.24 |
| 1-1/4 | CH-F027-007 | 48.5 | 17 | 42.16 | 64 | 0.34 |
| 1-1/2 | CH-F027-008 | 51 | 18 | 48.26 | 71.5 | 0.44 |
| 2 | CH-F027-009 | 56.5 | 21 | 60.33 | 85.5 | 0.65 |
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