Z61H-16C/25C/40C焊接閘閥從(cong)結構形式上，主要的(de)(de)區別是所采用的(de)(de)密封元件(jian)的(de)(de)形式。根據密封元件(jian)的(de)(de)形式，常常把閘閥分成幾種不(bu)同的(de)(de)類型

具有以下優點；

 1．流體阻(zu)力小，密封面(mian)受介質(zhi)的沖刷(shua)和侵(qin)蝕小。

 2．開閉較(jiao)省力。

 3．介質流(liu)向不(bu)受(shou)限制，不(bu)擾流(liu)、不(bu)降低壓力。

 4．形體簡單，結構(gou)長度短，制造工藝(yi)性(xing)(xing)好，適用范圍(wei)廣。閘(zha)(zha)(zha)(zha)閥的種類(lei)：按(an)密封面配置可(ke)(ke)分為(wei)楔(xie)(xie)式(shi)(shi)(shi)(shi)閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)閘(zha)(zha)(zha)(zha)閥和(he)平(ping)行(xing)(xing)閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)閘(zha)(zha)(zha)(zha)閥，楔(xie)(xie)式(shi)(shi)(shi)(shi)閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)閘(zha)(zha)(zha)(zha)閥又(you)可(ke)(ke)分為(wei)：單閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)、雙閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)和(he)彈(dan)性(xing)(xing)閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)；平(ping)行(xing)(xing)閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)閘(zha)(zha)(zha)(zha)閥可(ke)(ke)分為(wei)單閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)和(he)雙閘(zha)(zha)(zha)(zha)板(ban)(ban)式(shi)(shi)(shi)(shi)。按(an)閥桿(gan)(gan)的螺紋位置劃(hua)分，可(ke)(ke)分為(wei)明桿(gan)(gan)閘(zha)(zha)(zha)(zha)閥和(he)暗(an)桿(gan)(gan)閘(zha)(zha)(zha)(zha)閥兩(liang)種。