differential pressure gauge with center back port

{"cid":"91202321","title":"IMI Norgren 18-015 Series 18-015-209 18-015-211 18-015-204 Pressure Gauge, 0-160 PSI,1\/4 NPT center back port","imgUrl":"https:\/\/img.chinax.com\/nimg\/25\/66\/0a6d39eacd511e98e9c5cb6e1219-200x200-1.jpg","attrs":{"Price":"10-30","Brand Name":"IMI Norgren","Model Number":"18-015-209 18-015-211 18-015-204 18-015-013","Minimum Order Quantity":"1","Delivery Time":"3 days","Type":"Mechanical","Place of Origin":"USA","Gauge Range":"0 to 160 psi","Packaging Details":"original packing","Supply Ability":"1000","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union","Approximate Diameter":"2.00 in"}}