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SYV71 single seat regulating valve
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Product classification
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Product Details
SYV71
Single-seat regulating valve
Linear Stroke Regulating Valve
Product overview
The SYV71 single-seat regulating valve produced by foreign technology is a regulating valve with a top-oriented structure. The fluid channel of the valve body is S-streamlined, with small pressure drop loss, large flow rate, wide adjustable range, high accuracy of flow characteristic curve, large valve core guiding area and good vibration resistance. Regulating valve with multi-spring film actuator, compact structure, large output force. Can be used to control a variety of different pressure and temperature of the fluid.
Standard technical parameters
Valve body
Nominal diameter: 25 ~ 200mm 1 "~ 8"
Nominal pressure: ANSI 125, 150, 300, 600
J1S 10、16、20、30、40K
PN1.6、4.0、6.4MPa
Connection type: Flange type: FF, RF, RJ and LG
Standard as per ANSI B16.5,JIS B2201
JB/T79.1 PN1.6MPa JB/T79.2
Concave-convex surface
Welding type: inlay welding SW(40~50mm)
Butt welding BW(65~200mm)
Material: ZG25
ZG1Cr18Ni9 ZGOCr17Ni12Mo2
1.25Cr0.5Mo 5.0Cr0.5Mo
SCPH21 SCPH61 Title
Upper valve cover: normal temperature type (P):-17~230 ℃
Elongation type I (E1):-45 ~-17 ℃
230~566 ℃
Elongation type II (E2): monolithic (E21):-100 ~-45 ℃
Welding type (E2W):-196 ~-100 ℃
Bellows type:-17~230 ℃
Filler: V-type poly-ethylene filler, impregnated with PTFE asbestos filler, stone woven filler.
implementing agency
Type: HA multi-spring membrane actuator.
Spring range: 0.02~0.10,0.08 ~ 0.24MPa
Air supply pressure: 0.14,0.16,0.28MPa
Air supply connector: RG1/4
Ambient temperature:-30~70 ℃
Valve action type: gas open or gas closed
Performance
Leakage: valve seat: in line with ANSI B16.104IV,
0.01% PTFE Seat Less Than Rated Cv: Conform to Standard ANSI B16.104VI.
Less than 10 of the rated Cv. Seat surfacing,
Less than 10 of the rated Cv (quick opening spool).
Return difference: 3% (without locator)
1% (with locator)
Linearity: ± 5% (without positioner)
1% (with locator)
Remarks: Standard V-type Tetrahydroethylene filler is used.
Adjustable range
50:1
Note: The flow characteristics of high-precision metal reading seat conform to 1EC534-2
Remarks:
1. P = normal temperature type, E1 = elongation type I, E2 = elongation type II, E21 = integral type, E2W = welding type.
2. The size of column H on the table is the value of the regulating valve without handwheel mechanism. If it is equipped with top-mounted handwheel mechanism, the size of handwheel mechanism shall be added accordingly. Check the technical parameter table of the HA actuator.
3. Extend the size of E1 column of type I, with valves with JIS 10K and ANSI 125,150 on the left and valves with JIS 16K and ANSI 300 or more on the right.
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