Katup gerbang stainless steel are used for isolation in chemical processing, oil and gas and other industrial pipework where the selected materials suit the fluid. For a project buyer, “stainless steel” is only the starting point. The body grade, memangkas, peringkat tekanan, connections and operator together define what is being supplied. This guide explains the main specification items to compare before requesting a quotation.
Bahan tubuh dan trim
Common stainless steel descriptions include 304, 316 dan 316L, but an order should identify the actual material grade for each main part, including whether the body is cast or forged. Body and trim need not be the same material. Stem and seating materials are selected for the service and wear requirements. Stellite, Misalnya, is a cobalt-based hardfacing alloy family, not a stainless steel grade. If your valve list specifies trim materials, include them rather than describing the assembly only as “316 stainless steel”.
Peringkat tekanan dan suhu
Katup gerbang stainless steel are supplied in different pressure classes and PN ratings. A Class number is a rating designation, not a fixed working pressure in psi. Use the applicable pressure-temperature data for the selected material and construction, and compare it with the project conditions. Cryogenic and high-temperature duties need suitable complete designs; a generic stainless steel description does not establish a single temperature range for every valve.
Koneksi Akhir
Katup gerbang stainless steel tersedia dengan berbagai koneksi akhir untuk integrasi yang mudah ke dalam sistem perpipaan. Koneksi akhir umum termasuk:
Ujung flensa: Katup dengan ujung flensa dirancang untuk dibaut atau bertabur flensa perkawinan pada sistem perpipaan.
Ujung lasan pantat berakhir: Katup ini memiliki ujung miring yang dapat dilas secara langsung ke sistem perpipaan.
Soket lasan berakhir: Ujung las soket dirancang untuk dilas ke fitting pipa menggunakan sambungan las soket.
Berulir berakhir: Katup dengan ujung berulir memungkinkan pemasangan mudah ke fitting berulir. For a flanged replacement, confirm the mating flange standard and facing as well as the valve size. For threaded ends, specify the thread form; a nominal inch size alone does not establish compatibility.
Standar dan Sertifikasi Desain
Project specifications may refer to ASME B16.34 for valve construction and pressure-temperature requirements, API 600 for its defined steel gate valve designs, or ISO 15761 for certain smaller steel valves. They have different scopes rather than being interchangeable labels. Additional requirements such as fire testing to an applicable standard or fugitive-emissions qualification to ISO 15848 should be agreed for the actual valve design. API 607 is a fire-test standard, not a general fire-protection approval. For cryogenic duty, agree the applicable service standard and test requirements before ordering.
Tipe aktuator
Katup gerbang stainless steel dapat dioperasikan secara manual atau dilengkapi dengan berbagai jenis aktuator, termasuk:
Operator handwheel: Gunakan handwheel untuk operasi manual sederhana.
Operator gigi: Operator gigi memberikan keunggulan mekanis yang lebih besar dan memungkinkan pengoperasian manual yang lebih mudah dari katup besar.
Aktuator pneumatik: Aktuator ini menggunakan udara terkompresi untuk membuka dan menutup katup, Seringkali untuk operasi jarak jauh atau otomatis.
Aktuator Listrik: Aktuator listrik menggunakan motor listrik untuk mengoperasikan katup, biasanya dikendalikan oleh pengontrol logika yang dapat diprogram (Plc) atau sistem kontrol terdistribusi (DCS).
Compare the valve specification and operating arrangement together. A manual isolation valve in an accessible line and an electrically operated valve on a remote pipe rack may need the same body material but different supporting equipment. Include the available power and control requirements where actuation forms part of the order.
Stainless Steel Gate Valve Options from Farpro
Kita Z40W and Z41W wedge gate valve page lists existing stainless steel configurations, including CF8 body and F304 stem material references. For electric operation, see the Z941W electric flanged gate valve. These product entries give you specific models to compare with the valve list, rather than starting from a broad material description.
Have a project specification ready? Send Farpro your valve enquiry with the size, kuantitas, destination and any required material or connection standard. For a replacement, an existing model and nameplate photo can help us identify which details need checking before we quote. If some items are still undecided, tell us about the fluid and the job, and we can discuss the options with you.