进口双偏心蝶阀原理特点
进口双偏心蝶阀也叫作高性能蝶阀，主要适用于水厂、电厂、钢厂冶炼、化工、水源泉工程、环境设施建设等系统排水用,尤其适用于水道管路上,作为调节和截流设备使用。和中线蝶阀相比，双偏心蝶阀更耐高压，寿命更长，稳定性好。
Double eccentric butterfly valve in 3 variations of sealing
• TG with PTFE+25% glass fibre seat
• TI Fire Safe
• IN with metal seat
Application fields: industrial and petrochemical range
Product features
• Body construction E1 Wafer, E3 Lug
• Face to face dimension according to ISO 5752/20, EN558-1/5, BS 5155/4
• Top flange according to EN ISO 5211
• Rating PN10/16/25/40, ANSI cl. 150
ANSI cl. 300 (DN50-300)
• Tightness TG/TI: Gas tightness according to EN
12266-1/P12 leakage rate A / API 598
IN: Gas tightness according to API 598
• ATEX option Execution according to ATEX 94/9/EC,Zone 1 and 21 – Gr II, Cat. 2 G/D
The butterfly valves ELARA meet the safety requirements of the pressure Equipments
Directive 97/23/EC (PED) appendix 1 for fluids of the groups 1 and 2.
Double eccentric function
The ELARA is a double eccentric butterfly valve. The double eccentricity results from
- Offset of the disc to the shaft (z 1) and
- Offset of the disc centre to the shaft (z 2).
Consequently, when opening, the disc is immediately disengaged from the seat and thus, the friction and the torque remain very low.
Fire Safe function
According to BS 6755 part 2
(Bureau Veritas - approval no. AIX3P00.0620J.3A)
1 Under normal working conditions, the tightness is done by the PTFE seat ring.
2 In case of fire, the PTFE seat ring is destroyed and the tightness is ensured by the metal seat ring.
进口双偏心蝶阀品牌
德国托马斯阀门集团于1933年创建于德国鲁尔工业区，也是世界最重要的工业区。位于德国西部、莱茵河下游支流鲁尔河与利珀河之间的地区。德国托马斯阀门集团是以生产高品质、先进的阀门、测量及控制系统而享誉全球的跨国性生产企业。采用世界先进的设备及生产工艺，所有产品都在严格的质量体系监控下完成作业。并在各大洲几十个国家拥有子公司及分支机构。
德国托马斯阀门中国一级总代理