RETZ瑞茨『進口高溫高壓止回閥』詳細介紹 ●RETZ止回閥系列●RETZ高溫高壓止回閥●產(chǎn)品數(shù)據(jù)

?描述--

RETZ進口高溫高壓止回閥閥瓣、閥座密封面采用鐵基合金或司太立鈷基硬質(zhì)合金堆焊面成,硬度高、耐磨、耐高溫、耐腐蝕、抗擦傷性能好使用壽命長等特點。不銹鋼銷軸與閥瓣連接采用內(nèi)裝式結構、性能優(yōu)良、密封更可靠

RETZ imported high temperature and high pressure check valve disc and seating seal face are made of iron base alloy or Sli cobalt based hard alloy surfacing surface. It is characterized by high hardness, abrasion resistance, high temperature resistance, corrosion resistance, good abrasion resistance and long service life. The stainless steel pin and disc are connected with internal structure, excellent performance and reliable sealing.

?原理--

進口高溫高壓止回閥閥瓣通過彈簧的壓縮變形來增加閥瓣的密封預緊力，使初始密封更加可靠，當進口端介質(zhì)壓力大于彈簧的壓縮力時，閥瓣向開啟方向移動，此時閥門打開，流體通過導流槽流入閥后；而當進口端壓力降低時，閥瓣封閉，再加上介質(zhì)回流的壓力，使閥瓣比壓達到密封要求而形成密封。

?用途--

進口高溫高壓止回閥通常用于石油、化工、天然氣、冶金、電力、化纖、鍋爐、造紙、城建、等領域的水、天然氣、導熱油、蒸汽等介質(zhì)的管路上，作為介質(zhì)流量和壓力的啟、閉裝置。

?設計規(guī)范--

規(guī)格通徑:DN15~200

壓力等級：PN64~32 Mpa

適用溫度：-20~540℃

閥體材質(zhì):A105,F304,F11,F22,F91

連接方式：法蘭、內(nèi)螺紋、焊接