不锈钢人孔

人孔是安装在储罐顶上的安全应急通气装置，通常与防火器、机械呼吸阀配套使用，既能避免因意外原因造成罐内急剧超压或真空时，损坏储罐而发生事故，又有起到安全阻火作用，是保护储罐的安全装置，特别适用于贮存物料以氮气封顶的拱顶常压罐。具有定压排放、定压吸入、开闭灵活、安全阻火、结构紧凑、密封性能好、安全可靠等优点。

垂直吊盖带颈平焊法兰人孔HG21520-95规定了碳素钢、低合金钢制垂直吊盖带颈平焊法人孔的型式、基本参数、尺寸、技术要求和有关使用规定。本标准适用于公称压力PN1.0~1.6MPa、工作温度根据材料类别限定在表3-2规定范围内的垂直吊盖带颈平焊法兰人孔。

人孔是安装在储罐顶上的安全应急通气装置，通常与防火器、机械呼吸阀配套使用，既能避免因意外原因造成罐内急剧超压或真空时，损坏储罐而发生事故，又有起到安全阻火作用，是保护储罐的安全装置，特别适用于贮存物料以氮气封顶的拱顶常压罐。具有定压排放、定压吸入、开闭灵活、安全阻火、结构紧凑、密封性能好、安全可靠等优点。人孔分为紧急泄压人孔、防爆阻火呼吸人孔、罐顶人孔、罐壁人孔和带芯人孔等。人孔一般由304、316L不锈钢钢板或者碳钢制作而成。

Stainless steel manhole

The manhole is a safety emergency ventilation device installed on the top of the storage tank. It is usually used in conjunction with a fire extinguisher and a mechanical breathing valve. It can prevent accidents from damaging the storage tank when a sudden overpressure or vacuum in the tank is caused by accidents. It has the function of safety and fire resistance, and is a safety device to protect the storage tank. It is especially suitable for the vaulted atmospheric tank whose storage material is topped with nitrogen. It has the advantages of constant pressure discharge, constant pressure suction, flexible opening and closing, safe fire resistance, compact structure, good sealing performance, safety and reliability.

Vertical sling cover with neck flat welding flange manhole HG21520-95 specifies the type, basic parameters, dimensions, technical requirements and related use regulations of carbon steel and low alloy steel vertical sling cover with neck flat welding manhole. This standard applies to manholes with vertical sling-neck flat-welded flanges with a nominal pressure of PN1.0~1.6MPa and a working temperature within the range specified in Table 3-2 according to the material category.

The manhole is a safety emergency ventilation device installed on the top of the storage tank. It is usually used in conjunction with a fire extinguisher and a mechanical breathing valve. It can prevent accidents from damaging the storage tank when a sudden overpressure or vacuum in the tank is caused by accidents. It has the function of safety and fire resistance, and is a safety device to protect the storage tank. It is especially suitable for the vaulted atmospheric tank whose storage material is topped with nitrogen. It has the advantages of constant pressure discharge, constant pressure suction, flexible opening and closing, safe fire resistance, compact structure, good sealing performance, safety and reliability. Manholes are divided into emergency pressure relief manholes, explosion-proof fire-resistance breathing manholes, tank top manholes, tank wall manholes and cored manholes. Manholes are generally made of 304, 316L stainless steel plate or carbon steel.

图片信息：304不锈钢卫生级人孔图片价格生产厂家型号 

公司简介：

安徽利勒洁净设备科技有限公司是国内专业生产制造洁净卫生级阀门管件，主要应用于食品机械行业、制药机械行业、乳制品行业、酿酒饮料行业以及精细化工等行业高精度卫生级流体设备的专业生产厂家，产品规格齐全；产品主要有：

无菌隔膜阀，卡箍直通隔膜阀，三通隔膜阀，法兰隔膜阀，气动隔膜阀，U型隔膜阀，罐底隔膜阀 ；

无菌球阀，卡箍直通球阀，螺纹球阀，焊接球阀，气动球阀，法兰球阀，电动球阀；

卫生级蝶阀，焊接蝶阀，卡箍直通蝶阀，螺纹蝶阀，法兰蝶阀，气动蝶阀，电动蝶阀；

不锈钢卫生泵，不锈钢卫生级离心泵，不锈钢卫生自吸泵，不锈钢酒精防爆泵，卫生奶泵，卫生饮料泵；

止回阀，过滤器、呼吸器、换向阀、防混阀、安全阀；304不锈钢卫生级人孔图片价格生产厂家型号 

卫生级不锈钢管件，焊接弯头，快装弯头，不锈钢三通，快装三通，四通，真空弯头，大小头；

罐顶组件系列，不锈钢储罐，发酵罐，不锈钢卫生级人孔，清洗球/器，视镜灯，排气阀等其它非标产品生产加工；

我们竭诚为您服务.

Anhui Lile Clean Equipment Technology Co., Ltd. is a domestic professional manufacturer of clean and sanitary valve and pipe fittings, which are mainly used in the food machinery industry, pharmaceutical machinery industry, dairy industry, wine and beverage industry, and fine chemical industries. Manufacturer with complete product specifications; the main products are:

Aseptic diaphragm valve, clamp straight-through diaphragm valve, three-way diaphragm valve, flange diaphragm valve, pneumatic diaphragm valve, U-shaped diaphragm valve, tank bottom diaphragm valve;

Aseptic ball valve, clamp straight-through ball valve, threaded ball valve, welded ball valve, pneumatic ball valve, flanged ball valve, electric ball valve;

Sanitary butterfly valve, welded butterfly valve, clamp straight-through butterfly valve, threaded butterfly valve, flange butterfly valve, pneumatic butterfly valve, electric butterfly valve;

Stainless steel sanitary pump, stainless steel sanitary centrifugal pump, stainless steel sanitary self-priming pump, stainless steel alcohol explosion-proof pump, sanitary milk pump, sanitary beverage pump;

Check valve, filter, respirator, reversing valve, anti-mixing valve, safety valve; 304 stainless steel sanitary manhole picture price manufacturer model

Sanitary stainless steel pipe fittings, welded elbows, quick-installed elbows, stainless steel tees, quick-installed tees, crosses, vacuum elbows, large and small ends;

Tank top assembly series, stainless steel storage tanks, fermentation tanks, stainless steel sanitary manholes, cleaning balls/devices, mirror lights, exhaust valves and other non-standard products production and processing;

We serve you wholeheartedly.