Silian Technical Import & Export Co., Ltd.Chongqing

Model Number: ZZHP-#1353 Brand Name: ZZHP Key Specifications/Special Features: ZZHP pilot-operated regulator is one kind ofenergy-saving control valve which it can adjust accordingto medium pressure and stabilize outlet pressure as aconstant without any external energy sourceIt is convenient and quickly for setting pressurevalue on the pilot and can adjust the set value in operatingat willIt features with high precision for high requiredoccasion where it is used to only shut-off (P1 ≤1MPa, P2 <10kP)It is widely applicable for chemistryengineering, petroleum, metallurgy, electric power, light, textile industries and moreIt is especially suitable for tank nitrogen sealed systemReduction ratio is 1:100This series is only one type ZZYP-16BStandard specification:Body: Type: fluid pressure contoured type
Nominal size: 20, 25, 40, 50, 65, 80, 100, 150
Pressure rating: ANSI 150, PN16, JIS10K
End connection: flange type (JIS B2201-1984, JB/T79.1-94, ANSI
B16.5-2009, HG20592-2009, HG20615-2009)
Body and bonnet:SCPH2/WCB, SCS13A/CF8, SCS14A/CF8M
Packing: V-Teflon and graphite
Gasket: non-asbestos rubber sheet
Principle:
ZZHP pilot-operated regulator is consist of pilot, valve, actuator and pressure pipe
Principle: medium flows into valve body according to the arrowhead direction, the one is guided into pilotafter pressure reducing and the other pass plug and seat, and is guided into pilot actuator by pressure pipe after throttling
When outlet pressure is more than set value, a thrust produced by pressure effecting on the pilot diaphragm to drive pilotclosing plug, cut off the pressure guided into valve actuator and make plug closing, so does outlet pressure reduce
When outlet pressure is less than set value, for counterforce of pilot spring opening pilot plug, inlet pressure is guided intovalve actuator to produce thrust making plug opening, so does outlet pressure increase
So repeatedly, keep outletpressure as a constant