Hammer Union Set, 301 Series, NPT × NPT, 3,000 psi, Standard Service

The Hammer Union Set, 301 Series, NPT × NPT, 3,000 psi, Standard Service is a complete wing-union (hammer-union) set comprising a Male sub, a Female sub, and a hand-tightened wing nut for hammer-tightened assembly. The 301 series is a 3K cold-working-pressure hammer union, threaded or butt-weld, for production-line and intermediate-pressure manifold service. Rated for 3,000 psi working pressure in standard service. Standard service rated for clean hydrocarbon, completion fluid, water, brine, oil, and gas streams within the working-pressure envelope.

Construction

• Type: Hammer Union Set (Male sub + Female sub + wing nut)
• Series: 301 (3K pressure class)
• End A: NPT (Male sub)
• End B: NPT (Female sub)
• Auxiliary: Butt-weld variants available; specify pipe schedule on RFQ
• Material: Forged carbon / alloy steel — ASTM A105 below 6,000 psi, AISI 4130 at 6,000 psi and above; tempered
• Temperature rating: -20°F to 250°F (-29°C to 121°C)
• Charpy-tested impact-energy reports available on request

Available sizes

Stock or short-lead nominal sizes: 2 in, 3 in, 4 in. Other sizes within the same series can be sourced build-to-order at typical 8–14 week mill lead times. Indus quotes a firm size, pressure class, end-connection style, 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.

Performance

Cold working pressure 3,000 psi (3K class), standard rated. Bodies are forged from ASTM A105 carbon steel (AISI 4130 alloy steel available on request) and tempered to the working-pressure design. Hydrostatic test at 1.5× shell pressure on every unit. Mill test reports per EN 10204 3.1 / 3.2 supplied with each shipment. Charpy V-notch impact testing available where service requires low-temperature toughness verification.

Applications

• 3K production-line manifolds
• Intermediate-pressure surface pipework
• Drilling-fluid recirculation lines
• Pressure-test-bench connections

OEM equivalents and compatibility

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):

• FMC WECO Figure 301
• Anson 301
• SPM 301
• OPI 301

Compliance

• ASTM A105 carbon steel forging — AISI 4130 alloy steel available on request
• Recognised oilfield wing-union design lineage — pressure-class methodology and hydrostatic testing aligned with API 6A practice
• EN 10204 3.1 / 3.2 mill test reports
• Hydrostatic test certificates per unit (1.5× shell pressure)
• Charpy V-notch impact testing on request
• Full traceability — heat number stamped on body

How to order

Confirm on your RFQ: (a) exact nominal size and bore ID, (b) line working pressure and pressure class, (c) end-connection style on each port (NPT thread, butt-weld, integral / non-pressure thread sealing end), (d) service class — sour (NACE MR0175) or standard, (e) any auxiliary requirement (charpy testing report, low-temperature certification), and (f) destination port for door-to-door logistics. Indus quotes ex-Dubai with full traceability.

Companion products

Pair with matched-pressure crossover unions, integral crosses / tees / elbows, swivel joints, pup joints, and adapter flanges of the same WECO figure class. For the higher-pressure frac series (1502 / 2202), also specify API 6A flanges, ring-joint gaskets, and BSL stud-and-nut sets in the matched pressure class. Hammer-union gaskets (Buna-N, Viton, HSN, FFKM) are sold separately — confirm fluid chemistry to match elastomer.