Frequently Asked Questions

Sizing & Selection

Untuk mengukur katup pernafasan dengan benar, ikuti langkah-langkah berikut:

Langkah 1. Tentukan Spesifikasi Tangki

  • Ukur diameter dan tinggi tangki.
  • Identifikasi lokasi tangki dan kondisi lingkungan yang akan terkena dampaknya.
  • Mengumpulkan Material Safety Data Sheet (MSDS) untuk media yang disimpan di dalam tangki, yang meliputi:

*Titik nyala media
*Titik didih media
*Panas laten penguapan
*Massa molekul relatif uap​​​​.

Langkah 2. Hitung Laju Aliran Maksimum

Tetapkan laju pengisian maksimum tangki (dalam meter kubik per jam).
Tetapkan laju pengosongan maksimum tangki (dalam meter kubik per jam).

Langkah 3. Tetapkan Persyaratan Tekanan dan Vakum

*Tentukan tekanan internal yang disetel (dalam mbar) yang harus dilepaskan oleh katup.
*Tentukan tekanan vakum yang disetel (dalam mbar) yang harus ditangani oleh katup.
*Pertimbangkan suhu yang disetel dan tentukan apakah jenis ventilasi akan berupa pipa atau atmosferik.

Langkah 4. Pilih Ukuran Katup

*Berdasarkan laju aliran yang diperlukan dan tekanan yang disetel, gunakan perhitungan yang sesuai untuk menentukan ukuran katup. Memanfaatkan standar seperti API 2000 atau ISO 28300 untuk pedoman ukuran yang tepat. Banyak produsen menyediakan perangkat lunak atau bagan ukuran untuk membantu memilih ukuran katup yang tepat.
*Ukuran katup dapat berkisar dari 2″ hingga 12″ (50 hingga 300 mm), tergantung pada persyaratan aplikasi dan perhitungan aliran.

Langkah 5. Material dan Fitur Tambahan

*Pilih bahan katup berdasarkan kompatibilitas media dan kondisi lingkungan. Pilihannya meliputi aluminium, besi ulet, baja tahan karat, baja karbon, dan berbagai paduan.
*Pertimbangkan fitur tambahan seperti lapisan pelindung, sensor alarm, atau desain khusus (misalnya penahan api, mekanisme pegas atau beban berat) sesuai kebutuhan untuk aplikasi spesifik.

Langkah 6. Manfaatkan Dukungan Produsen

Jika ukurannya tidak jelas, banyak produsen menawarkan layanan pengukuran katup untuk memberikan kinerja katup yang optimal dan spesifikasi teknis yang hemat biaya. Kami menawarkan layanan pengukuran dan penghitungan yang disesuaikan dengan kebutuhan pelanggan tertentu.
Dengan mengikuti langkah-langkah ini, Anda dapat memastikan bahwa katup pernafasan memiliki ukuran yang tepat untuk aplikasi Anda, sehingga memberikan perlindungan efektif terhadap tekanan berlebih dan kondisi vakum di tangki penyimpanan Anda.

Produk

A breather valve(pressure/vacuum relief valve) is designed to protect storage tanks, process systems, and equipment from excessive pressure and vacuum conditions. These valves allow for the controlled venting of gases or vapors and help to maintain a safe working environment by preventing tank damage and minimizing product loss due to evaporation​​​​.

Breather valves work by using weight-loaded or spring-loaded pallets to control the flow through the valve. When the internal pressure or vacuum reaches a set point, the pallet lifts off the seat to allow flow. This prevents emission losses until very close to the set pressure and prevents air intake until very close to the set vacuum​​.

  1. High flow capacity from a compact valve size.
  2. Wide range of pressure and vacuum settings for maximum tank protection.
  3. Minimization of gas loss and evaporation, resulting in economic savings.
  4. Compliance with stringent emission control regulations.
  5. Modular design allows for customization to specific requirements​​​​.

Breather valves can be constructed from various materials, including aluminum, stainless steel, carbon steel, ductile iron, and alloys such as C276. The choice of material depends on the specific application and the type of media being handled​​​.

Common applications include protecting storage tanks in industries such as pharmaceuticals, food and beverage, chemical processing, and petrochemical industries. They are also used in systems where vapors need to be piped away or vented to the atmosphere​​​.

Breather valves are designed and tested according to standards such as API 2000:2014 and EN ISO 28300:2016. They also meet European Directive 2014/34/EU for equipment used in potentially explosive atmospheres (ATEX)​​​​.

Selecting the right breather valve involves considering factors such as tank size, media characteristics (flash point, boiling point, latent heat of vaporization, molecular mass), location, maximum filling and emptying rates, and the required set pressure and vacuum settings. Consulting with a Yee Valve expert and using a valve sizing service can help ensure optimal performance and cost-effectiveness​​​​.

Regular inspection and maintenance are necessary to ensure breather valves operate correctly. This includes checking for any blockages, ensuring the pallets and seats are clean and free of debris, and verifying that the set pressures and vacuums are accurate. Maintenance procedures should follow the manufacturer’s recommendations to maintain safety and efficiency​​​​.

A flame arrester is a safety device installed in equipment that contains flammable gases or vapors. It prevents the propagation of flames and explosions by quenching the flame front before it can reach the protected side of the device.

Flame arresters function by cooling the flame front through a series of narrow passages or “quenching gaps.” These gaps are designed to be small enough to extinguish the flame while allowing gases to pass through.

  • Deflagration Flame Arresters: Protect against explosions where the flame propagates at subsonic velocities.
  • Penangkap Api Detonasi: Designed for more severe conditions where the flame front travels at supersonic speeds, producing shock waves.
  • End-of-Line Flame Arresters: Installed at the end of a pipeline to protect against external sources of ignition.
  • In-Line Flame Arresters: Installed within the pipeline to prevent the spread of flames within the piping system.

Flame arresters are commonly used in systems for generating, storing, and transporting flammable gases and liquids, such as chemical processing plants, oil refineries, gas storage facilities, and pipelines.

Regular inspection and maintenance are essential for flame arresters to function correctly. Key maintenance tasks include:

  • Initial inspection three months after commissioning.
  • Annual inspections as a minimum for clean processes.
  • Additional inspections if an explosion is detected or if there are signs of damage or corrosion.
  • Cleaning to remove debris, insects, or corrosion that can block the quenching elements​​​​.
  • Ensure the flame arrester is correctly installed according to the operating conditions.
  • Verify that no unauthorized modifications have been made.
  • Check for blockages, corrosion, and mechanical damage.
  • Confirm that all fasteners are secure and tightened to the required torque.
  • Record all maintenance activities accurately.

Poorly maintained flame arresters can fail to provide adequate protection against explosions, potentially leading to catastrophic equipment damage and safety hazards. Common issues include blocked elements, severe corrosion, and mechanical damage, which can impair the flame arrester’s effectiveness​​​​​​.

Flame arresters must be used under the specific conditions they were designed and tested for. They are available in various configurations to suit different piping systems, and the correct model should be selected based on the type of gas, operating pressure, and temperature range​​​.

  • Ensure compatibility with the process conditions, including gas type and pressure.
  • Follow torque guidelines for flanged connections.
  • Position the flame arrester correctly to facilitate future maintenance.
  • Check for leaks after installation to ensure a proper seal.
  • Do not use lifting eyebolts to lift the entire flame arrester assembly; they are only for handling the housing during inspection and maintenance.
  • Avoid piping drainage, instrumentation, and cleanout connections to a common line to prevent flame bypass.
  • Replace damaged flame elements immediately as they can render the flame arrester ineffective​​​​.

Payment Term

At Yee Valve, we are a family-owned business expertly integrating manufacturing and trading of industrial valves. Our strategic headquarters are in Taipei, Taiwan, supported by three state-of-the-art factories in mainland China.

history of valve company
  • Pay 30% in advance and 70% before shipment by T.T. (Standard Products)
  • Pay 100% in advance by T.T. (Special Products)
  • 100% L/C at sight from special customers and L/C should be issued from the world’s first-class bank. (Special Markets)

After-Sales Service & Technical Support

1. Bantuan Teknis

Yee Valve menawarkan panduan ahli untuk pemilihan, pemasangan, dan pemeliharaan katup. Pelanggan dapat menghubungi dukungan teknis melalui telepon, email, atau faks untuk pertanyaan atau masalah apa pun terkait produk kami. Selain itu, kami memberikan solusi unik untuk memenuhi kebutuhan pelanggan yang spesifik, termasuk desain khusus dan pilihan material yang sesuai dengan berbagai aplikasi industri.

2. Dokumentasi dan Sertifikasi

Kepatuhan dan Standar

Semua katup dirancang dan diproduksi sesuai dengan standar internasional yang relevan seperti API 2000 dan ISO 28300. Yee Valve menyediakan dokumentasi yang diperlukan, termasuk sertifikat kepatuhan, panduan pengguna, dan sertifikat pengujian untuk menjamin kualitas dan keamanan produk.

Manual Produk

Manual produk terperinci dan lembar data teknis disediakan untuk membantu pelanggan memahami spesifikasi dan prosedur operasional katup kami.

3. Dukungan Purna Jual

Layanan Garansi

Yee Valve menawarkan layanan garansi untuk produk kami, memastikan bahwa setiap cacat produksi atau masalah operasional segera diatasi. Ketentuan garansi diberikan pada saat 12-18 bulan setelah pembelian, dan pelanggan dapat meminta perbaikan atau penggantian sesuai kebutuhan.

Ketersediaan Suku Cadang

Kami menjaga stok suku cadang penting untuk memfasilitasi penggantian cepat dan meminimalkan waktu henti. Pelanggan dapat memesan suku cadang langsung dari Yee Valve untuk memastikan kompatibilitas dan keandalan.

4. Jasa Pemeliharaan dan Perbaikan

Pemeliharaan Pencegahan

Yee Valve memberikan pedoman pemeliharaan preventif untuk membantu memperpanjang umur katup dan memastikan pengoperasian yang berkelanjutan dan andal. Jadwal dan prosedur perawatan rutin diuraikan dalam manual produk.

Layanan Perbaikan

Jika terjadi malfungsi atau kerusakan katup, Yee Valve menawarkan layanan perbaikan yang dilakukan oleh teknisi terlatih. Pelanggan dapat mengirim katup mereka ke pusat layanan resmi atau meminta layanan perbaikan di tempat tergantung pada tingkat keparahan masalahnya.

5. Program Pelatihan dan Dukungan

Program Pelatihan

Yee Valve mengadakan program pelatihan bagi pelanggan untuk mendidik mereka tentang teknik penanganan, pemeliharaan, dan pemecahan masalah katup yang benar. Program-program ini dapat dilakukan di tempat atau di fasilitas pelatihan Yee Valve.

Lokakarya Teknis

Lokakarya dan seminar teknis berkala diselenggarakan untuk terus memberikan informasi kepada pelanggan mengenai kemajuan terkini dalam teknologi katup dan praktik terbaik dalam manajemen katup.

6. Umpan Balik dan Peningkatan Pelanggan

Mekanisme Umpan Balik

Yee Valve menghargai umpan balik pelanggan dan telah menetapkan mekanisme untuk mengumpulkan dan menindaklanjuti saran dan keluhan pelanggan. Umpan balik ini membantu dalam meningkatkan kualitas produk dan standar layanan.

Order Issues

When you make an order to Yee Valve, here are the steps you should follow based on the documents provided:

1. Verify the Order Details

Ensure that all order details, such as the model, quantity, and specifications match your request. Check the specific models ordered and their corresponding specifications against the provided documents.

2. Check the Material Specifications

Confirm that the materials listed for each valve component match what you ordered. For instance, body materials (e.g., Aluminum, AISI 316) and gasket materials (e.g., expanded graphite, PTFE) should align with the order specifications​​​​​.

3. Dimensions and Connection Types

Validate that the dimensions (size, weight, etc.) and connection types (flanged, threaded, etc.) are correct. Make sure the dimensions of each valve (e.g., DN 50, DN 100) are as per the order​​.

4. Pressure and Vacuum Settings

Verify that the pressure and vacuum settings are correctly calibrated according to the order. Check if the valves are set to the correct pressure/vacuum relief settings required by you​​​​.

5. Accessory and Add-on Features

Ensure that any additional features or accessories (like proximity switches, flame arresters, or temperature sensors) requested by you are included and properly installed​​​.

6. Documentation and Certification

Check that all necessary documentation, including test certificates, compliance certificates (e.g., ISO 9001, API Std 2000), and user manuals, are included with the shipment. Verify certifications for pressure equipment directives if applicable​​​​.

7. Quality Control and Final Inspection

Conduct a final inspection to ensure all valves are free from defects and meet quality standards. Confirm that the valves have passed all required tests and quality checks before shipping​​.

Shipping & Warranty

All valves from Yee Valve are covered with a 12 months warranty from the date of installation or 18 months warranty from the shipment date, whichever comes earlier. The scope of the warranty is covered for manufacturing defects only. If a valve failure is due to incorrect operation by the customer, the warranty is not applicable.

All shipment products are documented, and we provide OEM services to many brands without any information about our manufacturer of the goods. Any drawings, operating instructions, test reports, etc., belong to the brand owner.

Shipping & Warranty