What is self-operated control valve Introduction? How does a self-operated control valve Introduction work?
Self-Operated Control Valve Introduction
ZZY type self-operated control valve doesn't need extra power, but take controlled media energy as power supply。 It brings in the actuator to control valve disk position and change two ends of different pressure and flow to make valve upstream and backstream pressure stability. It has agility, good sealing, the pressure set point small fluctuations and other advantage and it is used widely in gas, liquid, and steam medium to reduce and stable pressure or relieve pressure self-control. This series of products have reduced pressure by backstream pressure control (B type) and relieves pressure by upstream pressure control (K type). Pressure phase control scape: 15~250 KPa. It can satisfy clients working condition requirements as per need assemble.
ZZY Type Self-Operated control
valve
Specification
| Body type : | Straight casing ball type body |
|---|---|
| Disk type : | Quick open disk |
| Nominal diameter : | DN20—300 , NPS 3/4''---12'' |
| Nominal pressure : | PN16—64 Class 150LB—300LB |
| Connection : | Flange , FF. RF. RTJ and so on |
| Bonnet type : | Bolted bonnet |
| Packing: | V type PTFE |
| Sealing gasket : | Metal clip graphite |
| Actuator: | Film slef type 、Piston self type |
| Surface painting : | Green Acrylic polyurethane enamel |
Code
| ZZY | Structure type | Nominal pressure | Body material | Mode of action | Condensation | Pressure control scope (KPa) | Nominal diameter |
|---|---|---|---|---|---|---|---|
| Z series self-operation control valve | P: Single-seat M: Sleeve type | PN16=16 CL150LB=150 LB | C=WCB LC=LCB P=CF8 PL=CF3 R=CF8M RL=CF3M D=Special material | B: Backstream pressure control K: Upstream pressure control | No: without C: with condensation | 15~50 40~80 60~140 120~220 160~220 200~260 240~300 280~350 330~400 380~450 480~560 540~620 600~700 680~800 780~900 880~1000 950~1500 1000~2500 | DN50= DN50 NPS2〞=NPS2〞 |
| For example: Single self-operated control valve, Nominal pressure PN16, WCB material, without condensation, pressure scope: 120—220KPa. Size DN50, Model: ZZYP-16C-B-120~220-DN50 | |||||||
| Nominal diameter（DN） | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rated KV | 7 | 11 | 20 | 30 | 48 | 75 | 120 | 190 | 300 | 480 | 760 | 1100 | 1750 | ||||||||||||||||||
| Rated travle（mm） | 8 | 10 | 14 | 20 | 25 | 40 | 50 | 60 | 70 | ||||||||||||||||||||||
| Nominal pressure | PN 16、40、64 CLASS150LB~300LB | ||||||||||||||||||||||||||||||
| Pressure control scope （Kpa） | 15~50 40~80 60~140 120~220 160~220 200~260 240~300 280~350 330~400 380~450 480~560 540~620 600~700 680~800 780~900 880~1000 950~1500 1000~2500 * Control pressure chosen among adjustment scope is better | ||||||||||||||||||||||||||||||
| Flow characteristic | Quick open | ||||||||||||||||||||||||||||||
| Accuracy of adjustment | ±5-10 | ||||||||||||||||||||||||||||||
| Applicant temperature | -40℃≤without condensation≤200℃≤with condensation≤350℃ | ||||||||||||||||||||||||||||||
| allowable leakage | hard seal（1/h） | Single-seat:≤10-4 valve rated capacity（IV） Sleeve: ≤5×10-4 （II）valve rated capacity | |||||||||||||||||||||||||||||
| Soft seal（1/h） | 0.15 | 0.30 | 0.45 | 0.60 | 0.90 | 1.7 | 4.0 | 6.75 | 11.10 | 16.0 | |||||||||||||||||||||
| Pressure reducing ratio | Max. | 10 | |||||||||||||||||||||||||||||
| Min. | 1.25 | ||||||||||||||||||||||||||||||
| Minimum upstream pressure | |||||||||||||||||||||||||||||||
| upstream pressure KPa | 30 | 50 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | ||||||||||||||||||||||
| Backstream pressure KPa | 15-24 | 15-40 | 15-80 | 15-120 | 20-160 | 25-200 | 30-240 | 35-280 | 40-320 | ||||||||||||||||||||||
| upstream pressure KPa | 450 | 500 | 550 | 600 | 650 | 700 | 750 | 800 | 850 | ||||||||||||||||||||||
| Backstream pressure KPa | 45-360 | 50-400 | 55-440 | 60-480 | 65-520 | 170-560 | 75-600 | 80-640 | 85-680 | ||||||||||||||||||||||
| upstream pressure KPa | 900 | 950 | 1000 | 1250 | 1500 | 2000 | 2500 | 3000 | |||||||||||||||||||||||
| Backstream pressure KPa | 90-720 | 95-760 | 100-800 | 125-1000 | 150-1200 | 200-1600 | 250-2000 | 300-2400 | |||||||||||||||||||||||
Chart 1: Body, bonnet material applicable and pressure scope(ANSI)
| Temp ℃ | Class150 | Class300 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SCPL1 LCB | SCPH2 WCB | SCPH21 WC6 | SCS13A CF8 | SCS14A CF8M | SCPL1 LCB | SCPH2 WCB | SCPH21 WC6 | SCS13A CF8 | SCS14A CF8M | |
| -45~38 | 1.84 | - | - | 1.90 | 1.90 | 4.78 | - | - | 4.95 | 4.95 |
| -5~38 | 1.84 | 1.96 | 1.99 | 1.90 | 1.90 | 4.78 | 5.10 | 5.16 | 4.95 | 4.95 |
| 50 | 1.81 | 1.92 | 1.92 | 1.84 | 1.84 | 4.72 | 5.00 | 5.10 | 4.77 | 4.80 |
| 100 | 1.72 | 1.76 | 1.76 | 1.56 | 1.56 | 4.51 | 4.63 | 4.88 | 4.08 | 4.21 |
| 150 | 1.57 | 1.57 | 1.57 | 1.39 | 1.39 | 4.40 | 4.51 | 4.63 | 3.62 | 3.85 |
| 200 | 1.40 | 1.40 | 1.40 | 1.25 | 1.25 | 4.26 | 4.38 | 4.54 | 3.27 | 3.56 |
| 250 | 1.20 | 1.20 | 1.20 | 1.16 | 1.16 | 4.05 | 4.16 | 4.44 | 3.04 | 3.34 |
| 300 | 1.01 | 1.01 | 1.01 | 1.01 | 1.01 | 3.76 | 3.87 | 4.23 | 2.91 | 3.15 |
| 350 | 0.84 | 0.84 | 0.84 | 0.84 | 0.84 | 3.59 | 3.69 | 4.01 | 2.81 | 3.03 |
| 375 | 0.73 | 0.73 | 0.73 | 0.73 | 3.64 | 3.88 | 2.77 | 2.96 | ||
| 400 | 0.64 | 0.64 | 0.64 | 0.64 | 3.44 | 3.65 | 2.74 | 2.91 | ||
Chart 2: Body, bonnet material applicable and pressure scope(GB)
| Temp. ℃ | PN16 | PN25 | PN40 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LCB | WCB | WC6 | CF8 | CF8M | LCB | WCB | WC6 | CF8 | CF8M | LCB | WCB | WC6 | CF8 | CF8M | |
| -29~38 | 1.5 | 1.6 | 1.6 | 1.5 | 1.5 | 2.4 | 2.5 | 2.5 | 2.4 | 2.4 | 3.9 | 4.1 | 4.1 | 4.0 | 3.9 |
| 93 | 1.4 | 1.4 | 1.4 | 1.4 | 1.3 | 2.2 | 2.3 | 2.3 | 2.1 | 2.0 | 3.8 | 3.7 | 4.0 | 3.3 | 3.4 |
| 149 | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 2.1 | 2.1 | 2.1 | 1.9 | 1.9 | 3.7 | 3.6 | 3.8 | 3.0 | 3.1 |
| 204 | 1.1 | 1.1 | 1.1 | 1.1 | 1.1 | 1.9 | 1.9 | 1.9 | 1.7 | 1.7 | 3.5 | 3.4 | 3.7 | 2.8 | 2.8 |
| 260 | 0.8 | 1.0 | 1.0 | 1.0 | 1.0 | 1.7 | 1.7 | 1.7 | 1.5 | 1.6 | 3.3 | 3.2 | 3.5 | 2.6 | 2.6 |
| 315 | 0.7 | 0.8 | 0.8 | 0.8 | 0.8 | 1.4 | 1.4 | 1.5 | 1.3 | 1.3 | 3.0 | 2.8 | 3.1 | 2.3 | 2.4 |
| 343 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 1.3 | 1.3 | 1.4 | 1.2 | 1.2 | 2.9 | 2.7 | 3.0 | 2.3 | 2.3 |
| 371 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | 1.2 | 1.2 | 1.3 | 1.1 | 1.1 | 2.8 | 2.7 | 2.9 | 2.2 | 2.2 |
| 399 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 1.1 | 1.1 | 1.2 | 1.0 | 1.0 | 2.5 | 2.6 | 2.7 | 2.1 | 2.2 |
Note:
- If temperature or pressure is in the middle of the showed figure, we can use interpolation to get Max working pressure or temperature.
- The pressure in the chart is all gauge pressure.
| 1 | Body | WCB | CF8 | CF8M |
|---|---|---|---|---|
| 2 | Seat | 304 | 304 | 316 |
| 3 | Disk | 304 | 304 | 316 |
| 4 | Gasket | 316+ graphit/PTEF | ||
| 5 | Bellows combination | 304 | 304 | 316 |
| 6 | Connection plate | 20 | CF8 | CF8M |
| 7 | Spring adjustment plate | 304 | 304 | 316 |
| 8 | Bonnet | WCB | CF8 | CF8M |
| 9 | York | 304 | 304 | 304 |
| 10 | Packing | PTFE/ Flexible graphit | ||
| 11 | Packing gasket | 304 | 304 | 316 |
| 12 | Spring | 60Si2Mn | ||
| 13 | Stem | 304 | 304 | 316 |
| 14 | Upper spring seat | 304 | 304 | 304 |
| 15 | Connection plate | 20 | 304 | 304 |
| 16 | Capsule | A3 | 304 | 316 |
| 17 | Diaphragm | Nitrile rubber clamp polyester | ||
| 18 | Push rod | 304 | 304 | 316 |
| 19 | Hex bolt | 45 | 304 | 316 |
| Nominal diameterDN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face to face（L） | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | ||
| Flange connection size（B） | 383 | 512 | 603 | 862 | 1023 | 1380 | 1800 | 2000 | 2200 | ||||||
| Pressure control scope （Kpa） | 15-140 | H | 475 | 520 | 540 | 710 | 780 | 840 | 880 | 915 | 940 | 1000 | |||
| A | 280 | 308 | |||||||||||||
| 200-500 | H | 455 | 500 | 520 | 690 | 760 | 800 | 870 | 880 | 900 | 950 | ||||
| A | 230 | ||||||||||||||
| 120-300 | H | 450 | 490 | 510 | 680 | 750 | 790 | 860 | 870 | 890 | 940 | ||||
| A | 176 | 194 | 280 | ||||||||||||
| 480-1000 | H | 445 | 480 | 670 | 740 | 780 | 850 | 860 | 880 | 930 | |||||
| A | 176 | 194 | 280 | ||||||||||||
| 600-1500 | H | 445 | 570 | 600 | 820 | 890 | 950 | 1000 | 1100 | 1200 | |||||
| A | 85 | 96 | |||||||||||||
| 1000-2500 | H | 445 | 570 | 600 | 820 | 980 | 950 | 1000 | 1100 | 1200 | |||||
| A | 85 | 96 | |||||||||||||
| Weight（Kg） | 26 | 37 | 42 | 72 | 90 | 114 | 130 | 144 | 180 | 200 | 250 | ||||
| Connecting pipe joint thread | M1.6×1.5 | ||||||||||||||
| |||||||||||||||
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