Features and performance of double-take fire-resisting breathing valve: Double-take fire-resisting b ......

Stainless steel gear pump is a pump and motor Siamese, and at the same time submerged work under the ......

Valve packing leakage reasons: 1. Packing gland is not compressed 2. Packing due to the use of too l ......

At present, the valve manufacturer generally uses a uniform numbering method; can not use a uniform ......

Electric three-way ball valve ball valve three points L and T-type. L-type three-way ball valve for ......