API Forged Y-Type Internal Thread Strainers

Engineered to shield pumps, compressors, and precision instruments from particulate damage, this API forged Y-type internal thread strainer is an essential protective component for compact high-pressure piping networks. The body is manufactured through high-tonnage precision forging, resulting in a dense and uniform grain structure that eliminates casting defects and ensures exceptional fatigue resistance under intense operating pressures and thermal cycling. Its streamlined Y-pattern internal geometry provides a large filtration surface area while optimizing flow characteristics to minimize system pressure drop. Standardized NPT or BSPP female threaded ends allow for rapid, leak-proof integration into smaller-bore piping. Inside, a heavy-duty stainless steel screen precisely intercepts solid debris, while the threaded cap with an integrated blow-off plug enables efficient cleaning and sediment removal without disconnecting the main line—significantly enhancing fluid purity and extending the service life of downstream assets in oil, chemical, and power applications.

  • Pressure Rating: 150 LB – 2500 LB, 1.0 – 42.0 MPa

  • Size Range: 1/2″ – 60″ (DN 15 – DN 1500)

  • Working Temperature: -86°C to 816°C

  • Standards: API, ANSI, ASME, DIN, JIS, BS

  • Materials: Carbon Steel, Stainless Steel, Alloy Steel, Special Alloys

  • Operation: Manual, Gear, Electric, Pneumatic

Structural Characteristics of

  • Utilizing premium F316 forged stainless steel, the body offers exceptional resistance to pitting and crevice corrosion thanks to its molybdenum content. In fine chemical or offshore platform environments with high salinity, this strainer maintains structural integrity, preventing pipeline contamination caused by material failure.

  •  Unlike conventional castings, the forged structure is dense and defect-free, easily handling continuous working pressures up to 800LB (approx. 13.8MPa). In high-pressure pump outlets or systems prone to pulsations, this dense metal grain flow ensures superior fatigue strength and continuous operational safety.

  • High-precision internal threads eliminate the excessive installation space and bolt weight required by flanged connections. This makes it the preferred filtration component for space-constrained areas like modular laboratory gas lines or skid-mounted dosing units, enhancing system integration and reducing weight.

  • The internal flow path is fluid-dynamically optimized to maximize debris retention while minimizing pressure drops. When handling high-viscosity fluids or energy-sensitive cooling loops, this efficient design reduces operational energy consumption and the pumping burden on downstream equipment.

  • Featuring an independent bolted cover, maintenance staff can directly remove the cap for screen cleaning or replacement without disconnecting the body from the line. In pharmaceutical lines or semiconductor process water systems, this convenient structure drastically shortens cleaning windows and ensures rapid process recovery.

  • The internal all-stainless reinforced screen boasts high collapse resistance, maintaining its pore shape even under high differential pressures. Whether capturing iron shavings or fine scale particles, it provides consistent filtration precision, safeguarding downstream solenoid valves and precision flow meters.

Class 150LB Main Connection Dimensions

DNSizeLDD1D2bfn-φdH
151/2″1309060.334.91024-16102
203/4″14510069.942.910.924-16113
251″15011079.450.811.624-16143
321-1/4″18011588.963.513.224-16166
401-1/2″20012598.47314.724-16184
502″220152120.792.116.324-19213
652-1/2″250180139.7104.817.924-19303
803″280190152.412719.524-19328
1004″300230190.5157.224.328-19385
1255″350255215.9185.724.328-22465
1506″380280241.3215.925.928-22530
2008″480345298.52692928-22665
25010″550405362323.830.6212-26720
30012″610485431.838132.2212-26805
35014″680535476.3412.835.4212-29862
40016″780595539.8469.937216-29908
45018″850635577.9533.440.1216-32929
50020″900700635584.243.3220-321000

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