壓(ya)(ya)力容(rong)(rong)器(qi)按在(zai)生產工(gong)藝(yi)(yi)過程中(zhong)的(de)(de)作(zuo)用原(yuan)理(li)，分(fen)為反應壓(ya)(ya)力容(rong)(rong)器(qi)、換熱壓(ya)(ya)力容(rong)(rong)器(qi)、分(fen)離(li)壓(ya)(ya)力容(rong)(rong)器(qi)、儲存壓(ya)(ya)力容(rong)(rong)器(qi)。在(zai)一種(zhong)壓(ya)(ya)力容(rong)(rong)器(qi)中(zhong)，如(ru)同時(shi)具(ju)備(bei)兩(liang)個以上的(de)(de)工(gong)藝(yi)(yi)作(zuo)用原(yuan)理(li)時(shi)，應當(dang)按工(gong)藝(yi)(yi)過程中(zhong)的(de)(de)主要(yao)作(zuo)用來劃分(fen)品(pin)種(zhong)。耐(nai)壓(ya)(ya)試(shi)驗(一般進行水壓(ya)(ya)試(shi)驗)。此(ci)時(shi)若將20R和(he)Q235和(he)20R系列(lie)的(de)(de)鋼材(cai)用16MnR等(deng)低合金鋼待(dai)用就極易產生問題，因此(ci)，一類壓(ya)(ya)力容(rong)(rong)器(qi)，此(ci)類'以優代劣'行徑在(zai)原(yuan)則是行不通的(de)(de)，應當(dang)被禁止。

設備法蘭是(shi)容(rong)器(qi)(qi)與(yu)介質輸(shu)送管(guan)道或儀表、安全附件管(guan)道等進(jin)行連接的附件。又稱壓(ya)力(li)容(rong)器(qi)(qi)法蘭，用于連接殼體(ti)(ti)與(yu)殼體(ti)(ti)、殼體(ti)(ti)與(yu)平蓋(gai)、殼體(ti)(ti)與(yu)管(guan)板。一般來(lai)說(shuo)，強度(du)級別(bie)高(gao)的，其冷加工性(xing)能(neng)與(yu)可焊(han)性(xing)就較(jiao)差，壓(ya)力(li)容(rong)器(qi)(qi)設計(ji)，二(er)者負相關。所以在(zai)進(jin)行這方面的代用時，應相應調(diao)整焊(han)接工藝，在(zai)熱處理時也可能(neng)會(hui)有相應變化，應給予充(chong)分重視。鎮(zhen)靜(jing)鋼在(zai)許多性(xing)能(neng)方面上，鎮(zhen)靜(jing)鋼都比沸騰鋼要更(geng)占優勢，壓(ya)力(li)容(rong)器(qi)(qi)，但在(zai)搪(tang)玻(bo)璃容(rong)器(qi)(qi)制造時，鎮(zhen)靜(jing)鋼的搪(tang)瓷效果(guo)反而不如沸騰鋼好。

容(rong)器(qi)(qi)(qi)(qi)的檢(jian)驗(yan)周期，一般(ban)為每六(liu)年至少(shao)進(jin)行(xing)一次。對盛裝空氣和惰(duo)性氣體(ti)的制造(zao)合格容(rong)器(qi)(qi)(qi)(qi)，在取得使用經驗(yan)和一兩次內(nei)外(wai)(wai)檢(jian)驗(yan)確認(ren)無腐蝕后(hou)，檢(jian)驗(yan)周期可適當(dang)延長。壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)檢(jian)驗(yan)除(chu)了上述檢(jian)驗(yan)項目(mu)外(wai)(wai)，壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)類別，還要(yao)進(jin)行(xing)耐壓(ya)(ya)試驗(yan)（一般(ban)進(jin)行(xing)水(shui)壓(ya)(ya)試驗(yan)）。對主要(yao)焊(han)縫(feng)進(jin)行(xing)無損探(tan)傷抽查或全部焊(han)縫(feng)檢(jian)查。壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)主要(yao)為圓(yuan)柱形(xing)，也有球形(xing)或其他形(xing)狀(zhuang)。根據結(jie)構形(xing)式(shi)(shi)(shi)，可分為多(duo)層(ceng)式(shi)(shi)(shi)壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)，繞板式(shi)(shi)(shi)壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)、型槽繞帶式(shi)(shi)(shi)壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)、熱(re)套式(shi)(shi)(shi)壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)、鍛焊(han)式(shi)(shi)(shi)壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)和厚板卷焊(han)式(shi)(shi)(shi)壓(ya)(ya)力(li)(li)容(rong)器(qi)(qi)(qi)(qi)等。