Series 994 features a short lay length, lightweight stainless steel body, corrosion resistant stainless steel relief valve, and patented torsion spring check valves.

• 系列994的特点在于铺设长度较短，采用重量较轻的不锈钢阀体，耐腐蚀不锈钢安全阀，和具有专利技术的扭力弹簧止回阀。