Grayloc-style hub-and-clamp pressure-rated connector, 5K to 15K classes. The flange-alternative for compact wellhead and process-skid pipework — fast make-and-break, no stud bolts, pressure-energised seal.
The Hub & Clamp Connector (Grayloc-style), 5K to 15K Pressure Classes is a api hub & clamp (Hub × Clamp connector pair (Grayloc-style)) rated for 15,000 psi working pressure in standard service. Standard service rated for clean hydrocarbon, completion fluid, and water-cut streams.
This product family covers the following stock or short-lead nominal sizes: 2 in, 3 in, 4 in (and bore-equivalent API sizes). Other sizes within the same series and pressure class can be sourced from the OEM mill on a build-to-order basis (8–14 weeks lead). Indus quotes a firm size, pressure class, configuration, and service-class match against your inquiry data sheet — call or RFQ with the line specification and we will return a complete matched bill of materials.
Working pressure 15,000 psi (15K class), standard rated. Manufactured to recognised oilfield frac-iron design standards — pressure-class methodology and hydrostatic testing aligned with API 6A. Hydrostatic test at 1.5× shell pressure on every unit. Mill test reports per EN 10204 3.1 / 3.2 supplied with each shipment.
This product is supplied as a recognised matched-pressure interchange for the following OEM standards and product lines (no implied authorised-distributor relationship — supplied by Indus Hydraulics):
Confirm on your RFQ: (a) exact nominal size and bore ID, (b) line working pressure and pressure class, (c) end-connection style and gender on each port (M / F, NPT / BW / Integral / RTJ / RF), (d) service class — sour (NACE MR0175) or standard, (e) any additional ports or taps (1/2 in NPT instrument tap, 9/16 in Autoclave, etc.), and (f) required certifications beyond the standard MTR + hydrostatic. Indus quotes ex-Dubai with full traceability.
Pair with matched-pressure hammer unions, swivel joints (Chiksan-style 50 / 100 / 200 series), pup joints, integral crosses / tees / elbows, plug valves, ball valves, and check valves of the same WECO figure class. For wellhead and frac-tree integration, also specify API 6A flanges, wellhead adapters, and ring-joint gaskets in the matched pressure class.
| Parameter | Value |
|---|---|
| Flow Iron Type | API Hub & Clamp |
| Figure / Pressure Series | 15K |
| Configuration | Hub × Clamp connector pair (Grayloc-style) |
| Parameter | Value |
|---|---|
| Working Pressure | 15000 psi |
| Pressure Class | 15K |
| Service Class | Standard |
| Temperature Rating | -20°F to 250°F (-29°C to 121°C) |
| Parameter | Value |
|---|---|
| End Connection (A) | Hub (welded or studded) |
| End Connection (B) | Hub (welded or studded) |
| Additional Ports / Taps | Clamp + Sealing Ring (sold integrated) |
| Available Sizes | 2 in, 3 in, 4 in (and bore-equivalent API sizes) |
| Bore / ID | Same as nominal |
| Parameter | Value |
|---|---|
| Material | Forged alloy steel (4130/4140), tempered |
| Parameter | Value |
|---|---|
| API / Industry Specification | Other (frac-iron lineage) |
| Material Class (API 6A) | N/A |