Globe Valves - Y-Pattern Pressure Seal Bonnet | Fluitek | Philippopoulos s.a.
Globe Valves - Y-Pattern Pressure Seal Bonnet | Fluitek | Philippopoulos s.a.
Globe Valves - Y-Pattern Pressure Seal Bonnet | Fluitek | Philippopoulos s.a.
Globe Valves - Y-Pattern Pressure Seal Bonnet | Fluitek | Philippopoulos s.a.

Globe Valves - Y-Pattern Pressure Seal Bonnet | Fluitek

Y-Pattern Pressure Seal Bonnet Globe Valve Fluitek

The Y-pattern globe valve with a pressure seal bonnet is designed for high-pressure lines, primarily in steam, feedwater, bypass, blowdown, and thermal circuits. Its inclined flow geometry reduces turbulence compared to conventional T-pattern globes and limits cavitation risk in high Δp applications.

Construction and Selection Limits

  • Standardization: ANSI
  • Connection: butt weld
  • Pressure classes: 900#, 1500#, 2500#, 4500#
  • Class 4500#: available only in forged body construction
  • Body construction: cast or forged
  • Materials: carbon steel, low alloy steel, 9% Cr alloys, austenitic stainless steel, nickel alloys
  • Design standards: ASME B16.34 or EN 12516

Trim and Operation

The disc is fully guided within the body, with a swivel stem-to-disc connection. This ensures proper disc-seat contact and limits asymmetric wear during operational cycles. Available in plug, needle, and parabolic disc options, depending on whether the use is isolation, fine control, or throttling service.

Sealing and Temperature

Packing systems are graphite-based. For temperatures above 600°C, ceramic fiber yarn packing is available, suitable for superheated steam and thermally stressed lines.

ANSI 1500# Reference Dimensions

The technical datasheet provides an indicative range of 2"–20" for Class 1500, with bore diameter 45–370 mm, end-to-end 216–1473 mm, and weights 45–3200 kg. Actual size range depends on pressure class and project requirements.

Certifications

Available compliances: ISO 9001:2015, PED 2014/68/EU, ATEX 2014/34/EU, IEC 61508 SIL, API 6A / ISO 10423, API 6D, API 6DSS, and TR-CU.

FAQ

When to choose a Y-pattern pressure seal?

When a globe valve is required for high pressure with lower hydraulic resistance than conventional T-pattern and with body-bonnet sealing suitable for pressure seal construction.

Is it suitable for regulation?

Yes, provided the appropriate disc is selected and Δp, temperature, flow velocity, and potential seat erosion are controlled.

Standard (Options)
  • ANSI
Connection (Options)
  • Butt Weld
Material (Options)
  • Carbon Steel
  • Austenitic Stainless Steel
  • Low Alloy Steel
  • Nickel Alloys
  • Cr Alloys
Pressure Rating (Options)
  • 900 lbs
  • 1500 lbs
  • 2500 lbs
  • 4500 lbs

Datasheet and documents

Description

FLUITEK ORSENIGO VALVES has a very extended experience in supplying this type of valve for high pressure applications. The manufacturing features:

  • fully guided disc in the body
  • alternative shapes of disc (plug type, needle type, parabolic shape)
  • swivel type stem-to-disc connection

are all deemed to allow adaptation to various service conditions, including throttling service. The Y-pattern fluid path shape helps to reduce fluid turbulence and consequent cavitation phenomenon. Design can be to ASME B16.34 but, also, to EN 12516. Cast body construction and forged body construction are both available.

Materials range from carbon steel to low alloy steels (including the widely used 9% Cr alloys), to austenitic stainless steel, to nickel alloys. Packing systems are based on graphite material, but ceramic fiber yarn packing sets are also available for temperature exceeding 600°C.

Materials are either to ASTM/ASME standards or to EN standards, either harmonized or calculated to design conditions. Pressure classes (per ASME standard) are normally ranging from 900# to 1500#, 2500# and 2500#. Class 4500# is also available but only in the forged body construction.

Certifications

Fluitek SRL Company Quality Policy 11-2022 – ENG