supply of qvrf relay switzer make modelqvrf relay switzer make model,qvrf relay switzer make model gm 021-00- bd-5-z (-2.5 to 2.5m bar) or dwyer model 1910-1 (0.40 to 1.6 inch wc) or eversure make diaphragm type with snap action mic ro switch as per m/s. eversure drg no. eee/afr/07. complying to rdso/elrs/tc/0072 - 2001 (rev-0). technical adoptors for suction and blower pressure switch along with ms mou nting base heavy duty wire braided flexible air pressure pipe with adoptors and connec ting pipe. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] amm/dsd/ed, sr tamil nadu 11.00 numbers => limited