Inquiry (采购产品): Need documentation RKR612AT I am revising our company's documentation of your valve Repair Kit. I need documentation of your material change, described below. An email response would suffice, verifying that the information below is correct. Ideally if you had an updated "How to Order" sheet showing the new material, I would like that - otherwise the email will do. Please verify the following: Dupont has changed the PTFE material that is in this valve repair kit. SVF has changed the mfr part # from RKR612TT to RKR612AT. Note the following info regarding the old vs. new ball seat material (designated by "A" and "T" in the new and old mfr part #s: SEAT MATERIAL SPECIFICATIONS: Code Name Material Temp(deg F)Pressure(Max) T = TFE Tetrafluoroethylene -50 to 450 1000 psi A = TFM-PTFE polytetrafluoroethylene -60 to 475 1500 psi TFM is chemically modified PTFE that fills the gap between conventional PTFE and melt-processable PFA. According to ASTM D 4894 and ISO Draft WDT 539-1.5, TFM is classified as a PTFE. Compared to conventional PTFE, TFM has the following enhanced properties: - Much lower deformation under pressure (cold flow) at room and elevated temps - Lower permeability - May be used at higher pressures **** Hidden Message ***** Richard Van Dyk 3440 E. University Drive Phoenix, AZ 85034 USA Company: ASM America Title: Manufacturing Engineer Phone: 602-470-2714 Fax: 602-470-2727 E-mail: richard.vandyk@asm.com **** Hidden Message ***** richard.vandyk@asm.com
