Pressure Vacuum Relief Valve

Breathing valve is a kind of air breather which install on the petrochemical fixed storage tank, in order to avoid tank over the pressure of over vacuum making the storage tank destruct, prevent the outside flame enter, reduce the tank fluid volatile.

Product Details Company Profile

Description

Breathing valve is a kind of air breather which install on the petrochemical fixed storage tank, in order to avoid tank over the pressure of over vacuum making the storage tank destruct, prevent the outside flame enter, reduce the tank fluid volatile.

According the country (petrochemical design fire proof specification) Gb50160 stipulate:” A，B kind fluid fixed arch-roof tank, should set arrester and breathing valve" , in order to meet the requirement, we develop and exploit all-weather (fire-proof) breathing valve whole series. Withing scientiific and smart mould、completely specification type、compact construction、light weight、huge breath capacity、 small leakage etc features. The product construction have breathing type、single exhaust type、single suction type、reducing type、jacket type (detail information please reference SX series breathing valve). Every kind series can mount arrester, also can mount suction 、 exhaust connection nozzle , also can manufacture any different material according to different medium such as petroleum % chemical、food industry, totally satisfy every kinds storage system process requirements.

Operating Pressure:

A, -295Pa(-30mmH2O)+355Pa(+36mmH2O)

B, -295Pa(-30mmH20)+980Pa(+100mmH20)

C, -295Pa(-30mmH2O)+1750Pa(+180mmH2O)

D, Customer specified

Working medium

Gasoline、kerosene、diesel oil、aromatic naphtha x air etc, or other petrochemical material, flame retardant gradation choose "HGJ21-89", choose class IIA or class II B decide by customer.

The stardand of manufacture and inspection

Manufacture and inspection reference to standard "SY7511-87 "GB5908-86".

Remark: flange connection adopt to HG5010-58.PN1.OMPa, also can manufacture meet customer's demand according to HGJ、JB、ANSI-B16.5、JIS.