Misaligning Hammer Union Set, 1003 Series Butt-Weld, 10,000 psi, Standard Service

The Misaligning Hammer Union Set, 1003 Series Butt-Weld, 10,000 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 1003 series is a misaligning hammer union — the wing-nut and seal geometry tolerate a few degrees of angular offset between the male and female subs at make-up. Use it on 10K high-pressure lines that cannot be perfectly aligned (e.g. between fixed-position equipment), where a standard 1002 would not seal under bending stress. The 5-inch size is downrated to 7,500 psi (5,000 psi sour). Rated for 10,000 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: 1003 (10K pressure class)
• End A: Butt-weld (Male sub) with misalignment-tolerant geometry
• End B: Butt-weld (Female sub) with misalignment-tolerant geometry
• Auxiliary: Tolerates a few degrees of angular offset at make-up — specify pipe schedule (typically XXH)
• 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 10,000 psi (10K class), standard rated. Bodies are forged from AISI 4130 alloy steel 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

• 10K production-line connections between fixed-position equipment
• Frac-pumping iron with unavoidable angular offset
• Misaligned high-pressure manifolds
• Choke-and-kill iron with tight equipment spacing

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 1003
• Anson 1003
• SPM 1003

Compliance

• AISI 4130 alloy steel forging (per industry frac-iron material lineage)
• 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.