Stainless steel rotary handle quick opening manhole

NegotiableUpdate on 01/05

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Overview

In industrial fields involving fluid storage and reaction such as petrochemicals, pharmaceuticals, and food processing, manholes are important accessory components of storage tanks, reaction vessels, and other equipment, responsible for key functions such as personnel access, equipment maintenance, internal cleaning, and ventilation. Stainless steel rotary handle quick opening manhole has become the preferred equipment in many industrial scenarios due to its convenient operation, reliable sealing performance, and strong adaptability.

Product Details

Stainless steel rotary handle quick opening manholeHG/T21534It is one of the series of standards for steel manholes and handholes released by the chemical industry of the People's Republic of China. It specifically develops detailed technical specifications for manholes with quick opening structures, including material selection, structural dimensions, strength requirements, sealing performance, testing methods, and acceptance standards.The development of this standard aims to unify product quality, ensure the compatibility of manholes with various steel atmospheric or low-pressure storage tanks and containers, and meet the dual requirements of equipment maintenance efficiency and safety in industrial production.

Stainless steel rotary handle quick opening manholeCore Structure and Characteristics of HG/T21534

1Rotary handle opening mechanism: efficient and convenient

Compared with traditional bolt fastening manholes, the core innovation of this product lies inRotary handle+clamp (or wedge block)The opening structure. The operator only needs to rotate the side handle to drive the clamp to tighten or loosen the flange cover through mechanical transmission - the entire opening process does not require dismantling a large number of bolts, and can be completed by a single person in only 30 seconds to 1 minute, greatly reducing the preparation time for equipment maintenance. Especially in storage tanks that require frequent maintenance (such as raw material tanks in the food industry and intermediate product tanks in the chemical industry), it can significantly improve production efficiency and reduce downtime losses.

2. Double sealing design: no liquid leakage, no air leakage

Sealing performance is a key indicator for measuring the quality of manholes, and HG/T21534 rotary handle quick opening manholes adopt“Metal hard seal+elastic soft seal”Double sealed structure:

3. Balancing lightweight and high strength: safe and durable

The main material of the product can be Q235-B carbon steel (suitable for non corrosive media) or 304/316L stainless steel (suitable for corrosive or sanitary environments) according to the working conditions, both of which have undergone strict mechanical performance testing.

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