Hebei Anmei Electrical Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of diaphragm type transformer pressure relief valve in China, also supports customized service. If you're going to buy high quality diaphragm type transformer pressure relief valve made in China, welcome to get quotation from our factory.
Technical Parameters
• Nominal diameter: DN50-DN250
• Opening pressure: 35-138kPa (customizable)
• Operating temperature: -40℃~+85℃
• Action response: ≤10ms
• Sealing grade: IP67
• Installation: vertical/horizontal
• Compliance: GB/T 30141, IEC 60076

Product Overview
This diaphragm type transformer pressure relief valve is a core safety component for oil-immersed transformers, providing fast overpressure relief, stable sealing, and reliable alarm protection. It effectively prevents tank rupture and ensures stable operation of power equipment.
Keywords: transformer pressure relief valve, diaphragm type, fast pressure relief
Product Details

Adopts high-strength corrosion-resistant diaphragm and precision elastic mechanism, installed on transformer tanks or oil conservators. When internal pressure exceeds the set value, the diaphragm quickly deforms to open the pressure relief channel; after pressure recovery, it automatically resets and seals tightly. Equipped with a signal contact to output remote alarm signals, supporting real-time monitoring of equipment status.
Product Features
1. Diaphragm precision actuation: Stable pressure setting, no leakage under normal working conditions
2. Fast pressure relief: Millisecond-level response, large flow relief to avoid tank deformation
3. Auto-reset & durable: One-piece forming, long service life, suitable for outdoor harsh environments
4. Dual protection: Mechanical pressure relief + electrical alarm, improving operation safety

Hebei Anmei Electric Equipment Co., Ltd. Advantages
We have independent R&D and precision machining capabilities, strict quality control from raw materials to finished products, with complete type test reports. Our products feature stable performance, short delivery cycles, and customized solutions for global power projects. We provide full-process technical support and after-sales service, making us a trusted supplier of transformer accessories for domestic and foreign customers.
Anmei Electric is a high-tech enterprise with over 30 years of deep engagement in transformer bushings. It specializes in R&D, production and sales of bushings for oil-immersed transformers of 40.5KV and below, boasting diverse products compliant with global standards, superior production capacity and quality control. Its products are exported to dozens of countries, widely used in power transmission & transformation and new energy scenarios, meeting the needs of global energy transition.

01
Profound Industry Experience
Over 30 years of focus on bushings, solid technical strength, and focus on core scenarios of medium and low-voltage power transmission & transformation and new energy supporting facilities
02
Diversified Product System
A full range of bushing types, compliant with international standards (US, EU, Australia, Germany, etc.); special models for wind and solar transformers adapted to harsh new energy working conditions
03
Efficient Production Capacity Response
Supported by automated production lines, daily output of over 2,000 sets, capable of quickly undertaking large orders and customized demands
04
Improved Quality Control System
Certified by multiple international systems, closed-loop management of the whole process, and product quality recognized by the global market
FAQ
Q: What are the key specifications of the Panel Mounted LV Epoxy Bushing?
A: Rated voltage: 2.5kV; Rated current: 3500A; Power frequency withstand voltage: 15kV/1min; Lightning impulse: 45kV; Cantilever tolerance: 3150N; Creepage distance: ≥70mm.
Q: What is the main application of this product?
A: It is mainly used for box-type distribution transformers, providing insulation, support, sealing and connection functions for low-voltage, high-current conductors.
Q: Where is the product manufactured, and what certifications does it have?
A: It is originally produced in Hebei, China, and has obtained ISO9001, ISO14001 and other relevant certifications.
Q: What are the payment terms and delivery time?
A: Payment terms: TT, LC; Delivery date: Negotiable. For one container, delivery takes 15-20 days; small orders (3-5 pcs) can be delivered soon with stock.
Q: What tests does the product pass, and what raw materials are used?
A: Tests include dielectric tests, mechanical strengthen tests, environmental test, X-ray test, etc.; Raw materials: High-grade imported epoxy resin (Huntsman) and high-quality T2 copper.
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