特殊系列調(diào)節(jié)閥                                                                                                         Special series regulating valve

DC1629導(dǎo)式低噪音套筒調(diào)節(jié)閥（可用于蒸汽放空）                                               DC1629L Pilot operated low noise control valve

DC1629導(dǎo)式低噪音調(diào)節(jié)閥（可用于蒸汽放空）的基本型為直通式閥體、先導(dǎo)平衡式閥芯、低噪音或多級降壓低噪音的套筒調(diào)節(jié)閥，應(yīng)用于非常嚴(yán)酷的工況。流體主要由特殊鉆孔的套筒調(diào)節(jié)，套筒為閥芯提供全行程連續(xù)導(dǎo)向。流關(guān)式結(jié)構(gòu)在閥門關(guān)閉時依靠流體流關(guān)產(chǎn)生的不平衡力保證閥芯密封實現(xiàn)嚴(yán)密切斷。特殊設(shè)計的先導(dǎo)平衡式閥芯僅需很小的推力即可打開閥門。設(shè)計的全金屬導(dǎo)向環(huán)以及金屬硬密封能夠保證566℃高溫工況下可滿足GB/T4213泄漏等級V級，并無實際使用的溫度限制。

除了先導(dǎo)式閥內(nèi)件外，其余零件都能和DC1624系列調(diào)節(jié)閥互換。

The DC1629L pilot low noise control valve (steam vent valve) is a straight-through valve body, pilot balanced spool, low noise and multi-stage step-down sleeve regulator for very severe service conditions. The fluid is mainly adjusted by a special bored sleeve, which provides a full stroke continuous guide for the spool. The flow-closed structure relies on the unbalanced force generated by the fluid flow when the valve is closed to ensure that the valve core seal is tightly closed. The specially designed pilot balanced spool opens the valve with a small thrust. The patented all-metal guide ring and pure metal hard seal can guarantee the GB/T4213 leakage level V under 566 °C high temperature conditions, and there is no practical temperature limit.

Except for the pilot valve trim, the remaining parts can be interchanged with the DC1624 series regulator.