... ASME, CE, IBR, JIS.. 2)Certificate: ISO 9001, TS.. 3)National Standard Editor 4)16 National Patent. Structure: This Equipment ... Range is P2±0.04Mpa. when 0.98≤P2≤3.82, the Variation Range is P2±0.06Mpa. when P2 ... ≥3.82, the Variation Range is P2±0.15Mpa.4. ... : feed-water control valve, throttle valve and so on.3. Safety system: safety valve, check valve and so on ...