SS Instrument / Ferrule Fittings
Single and double ferrule instrumentation fittings in SS 304 and SS 316 — elbows, tees, crosses, connectors, bulkhead unions, manifold valves and syphon tubes.
Product Overview
Instrumentation fittings must seal reliably at high pressure and stay serviceable in the field. Our ferrule fitting range covers union elbows, male and female elbows, union tees, run and branch tees, crosses, reducing unions, bulkhead unions, connectors, adaptors, nut ferrules and tube end closures.
Alongside the fittings we supply manifold valves, condensate pots, forged blind hex tees and elbows, and syphon tubes in SS 304 and SS 316. Syphon tubes are fitted between the pressure gauge and the process where temperatures exceed about 65 °C — for example on steam — acting as a cooling coil that protects the gauge from hot vapours.
- Ferrule type: Single and double (twin) ferrule
- Material: SS 304 & SS 316
- Valves: Manifold valves, condensate pots
- Syphon tubes: U type & trumpet type (pigtail / coil)
- Syphon use: Process temperatures above 65 °C, e.g. steam
Specifications
| Parameter | Details |
|---|---|
| Ferrule fittings | Single ferrule and double (twin) ferrule |
| Material | SS 304 and SS 316 (other grades on request) |
| Forged items | SS forged tee, elbow and cross; blind hex tee and elbow |
| Valves & accessories | Manifold valves, condensate pots, valve bodies |
| Syphon tubes | SS 304 & SS 316, U type and trumpet type (pigtail & coil) |
Grades & Standards
Stainless Steel
SS 304, SS 304L, SS 316, SS 316L
Syphon Tubes
SS 304 & SS 316 — U type, trumpet type (pigtail & coil)
Other Materials
Monel, Inconel, Hastelloy and duplex on request
Types Available
- Union elbow
- Male elbow
- Female elbow
- Union tee
- Male run tee
- Male branch tee
- Female run tee
- Female branch tee
- Union cross
- 45° elbow
- Tube end closure
- Bulkhead elbow
- Positionable male elbow
- Nut ferrule
- Union
- Reducing union
- Bulkhead union
- Male connector
- Female connector
- Male adaptor
Dimension Chart
| Item | Size / type | Remarks |
|---|---|---|
| Ferrule fittings | 1/8" – 1" and 3 mm – 25 mm tube OD | Single & double ferrule |
| Syphon tube – U type | ½" NPT (M) × ½" NPT (F) typical | For steam service above 65 °C |
| Syphon tube – trumpet type | Pigtail & coil type | Protects gauge from hot vapour |
| Manifold valves | 2 way, 3 way, 5 way | For pressure & DP transmitters |
| Condensate pot | As per project specification | Steam service |
Dimensions are reference values from the governing standard. Please confirm the exact dimensions and tolerances against the current edition of the standard before ordering.
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | Other |
|---|---|---|---|---|---|---|---|---|---|
| SS 304 | ≤ 0.08 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 18.0–20.0 | 8.0–10.5 | — | — |
| SS 316 | ≤ 0.08 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | — |
| SS 316L | ≤ 0.035 | ≤ 2.00 | ≤ 0.75 | ≤ 0.045 | ≤ 0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | — |
Values are the usual requirements of the governing ASTM/ASME specification and are given for reference. The mill test certificate supplied with your consignment is the governing document.
Mechanical Properties
| Grade | Tensile strength (MPa, min) | Yield strength (MPa, min) | Elongation (%, min) | Hardness |
|---|---|---|---|---|
| SS 304 | 515 | 205 | 35 | 201 HB max |
| SS 316 | 515 | 205 | 35 | 217 HB max |
| SS 316L | 485 | 170 | 40 | 217 HB max |
Applications
Need SS Instrument / Ferrule Fittings for your project?
Send us the grade, size and quantity — our team replies with a quotation promptly.
