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Globe Valve > Products >Flange Straight-through Throttle Emptying Globe Valve

Flange Straight-through Throttle Emptying Globe Valve

Manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 0086 (021) 3652 8716
Mob: (0086) 138 1635 6498

product drawing

Flange straight-through throttle emptying globe valves
Flange straight-through throttle emptying globe valves

Product types:

FJ41.FJL41.CJ41

Product structural features

1.This valve is a new type of throttle, globe, emptying product. It uses cage-shaped throttling, with multi-stage throttling effect, and the throttling effect is evident, sealing is reliable, operation and maintenance is convenient, etc.
2.The valve adopts double sealing (hard, soft sealing), makes the sealing reliably, hard alloy sealing surface can be more resistant to flow erosion, wear-resistant, double sealing can ensure zero leakage under the conditions of the high-pressure gas medium. And the valve service life is long.
3.The seat sealing surface uses conic sealing, it is conducive to self-cleaning the surface dirt attached to the sealing surface.
4.The disc sets a balance hole, piston sealing, ensuring stable operation under open/closed full pressure diffence, open is light and flexible, hoist torque is small.
5.Both throttle emptying globe valve and dual-action thorttle valve have thorttle and cutting off functions(the sealing is zero leakage), the thorttle part is departed from sealing surface, to reduce the flow erosion to the sealing.
6.double-action-type throttle globe valve also has a multi-level throttling, throttle pressure difference is large, and can be applied for throttling and cutting off under high pressure.
7.Packing adopts self-sealing V-shaped packing structure, without regulation, open and off are extremely convenient. Stuffing box has a secondary sealing grease inpouring structure, so that the packing sealing performance is reliable.
8.the valve can be online maintenance, the pipeline can replace the packing and other series easy-demaged parts under normal pressure.
9.A bigger sewage hole has been set at the bottom of the valve, when necessary, open to clean the inner dirt.

Performance and features

1. Normally off state: disc hard sealing press on the seat convex plate, forming a rigid sealing, amd at the same time the soft sealing that embedded in the disc is pressed tightly with seat surface, forming a second sealing, double sealing structure ensures zero leakage, and because the disc has set a balanced hole, it gets smaller force when the valve is open and close, and it also makes the valve with smaller torque when opening and closing.
2. slow pressure status: when the bottom of disc departs from the seat sealing surface, disc and cage-shaped sleeve inner diameter form a sealing because the disc bottom is near to the cage-shaped opening bottom edge. There is no direct venting pressure relief, so achieve a moderating influence.
3.throttle state: the disc bottom leaves the seat, and open further, the small disc forms first level throttle, the high speed liquid flows directly to the opening between the small disc and seat through slow pressure throttle, forming window flow channel, to achieve second level throttle. As the sleeve window edge is thorttle surface, when the high pressure medium washes the throttle channel directly, the bottom of disc produces wortex because of the change of medium direction, mitigating the medium washing directly to the disc, and the seat sealing is also away from the direct washing. Meanwhile because the disc sealing surface is conical, it can purge the dirt and impurities of the seat sealing surface, to protect the sealing surface, thereby extending the valve service life.
4.full-open state: when the disc is in full-open state, the valve is in full venting state, fluid resistance is smaller in the cold part, shortening emptying time and increasing the emptying effect of the valve. Difunctional thorttle globe valve

Reference standard

API 6D      pipe valve specification
GB12235      General Valve flange steel globe and lift check valve
ANSI B16.5a    pipe flange and flange components
JB/T79.1-79.2   Whole cast steel pipe flange
GB/T13927    pressure test
JB/T9092    inspection and test

Dimensions & constructral diagram

Flange straight-through throttle emptying globe valve constructral diagram
Flange straight-through throttle emptying globe valve constructral diagram

Main performance and specification

ASME Pressure Class normal pressure test(MPa) suitable temperature°C applicable medium
sealing upper sealing shell gas sealing “G” type “D” type general type anti-sulfur type fundamental type
nominal pressure PN(MPa) 1.6 1.76 1.76 2.4 0.6 -29~250 -46~121 -29~121 Containing H 2 S and Co 2 〉500Mg/m 3 medium oil,natural gas, water,etc
2.5 2.75 2.75 3.75 0.6
4.0 4.4 4.4 6.0 0.6
6.4 7.04 7.04 9.6 0.6
10.0 11.0 11.0 15.0 0.6
16.0 17.6 17.6 24.0 0.6

The materials of main parts

No. part name material No. part name material
1 double stud 35CrMo 14 bonnet 25
2 nut 35 15 lower packing gasket 1Cr13
3 bottom cap 20 16 middle packing PTFE
4 O-ring NBR 17 middle packing NBR
5 body WCB 18 upper packing gasket 1Cr13
6 seat 20+ENP 19 retainer PTFE
7 inner hexagon cylinder head bolt 35 20 packing gland 45
8 platen 20 21 support WCB
9 sealing ring NBR 22 stem nut ZQAL9-4
10 core sleeve 20+ENP 23 handwheel 20
11 disc 2Cr13+Ni60 24 nut 35
12 steel ball Gcr15 25 greasing valve 25+ galvanization(components)
13 Stem 2Cr13      

Main external dimensions

PN (MPa) DN (mm) dimensions(mm) weight(kg)
L H H1 D0
1.6 25 216 243 86 180 17
40 230 265 108 250 24
50 230 346 115 250 27
80 310 409 146 300 52
100 350 433 163 300 60
150 480 521 202 350 125
200 600 594 292 350 165
250 730 621 355 400 285
2.5 25 216 243 86 180 17
40 230 265 108 250 24
50 230 346 115 250 27
80 310 409 146 300 55
100 350 433 163 300 66
150 480 521 202 350 140
200 600 594 292 350 180
250 730 621 355 400 310
4.0 25 216 243 86 180 20
40 230 265 108 250 29
50 230 346 115 250 32
80 310 409 146 300 67
100 350 433 163 300 80
150 480 521 202 350 168
200 600 594 292 350 215
250 730 621 355 400 372
PN (MPa) DN (mm) dimensions (mm) weight (kg)
L H H1 D0
6.4 25 216 243 86 180 20
40 230 265 108 250 29
50 230 346 115 250 32
80 310 409 146 300 67
100 350 433 163 300 80
150 480 521 202 350 168
200 600 594 292 350 215
250 730 621 355 400 372
10.0 25 230 245 78 200 29
40 260 265 106 250 42
50 300 287 110 300 55
80 380 409 152 350 95
100 430 433 169 350 120
150 559 531 225 400 240
200 660 709 321 500 310
250 787 817 399 500 530
16.0 25 230 215 78 200 35
40 260 265 105 250 50
50 300 237 110 300 65
80 390 414 155 350 116
100 450 440 175 350 145
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