Compared with the 1151 type pneumatic diaphragm angle single-seat valve, the new series of 137 type pneumatic film angle sleeve control valve is only different in the valve trim; compared with the pneumatic film sleeve control valve, only the valve body is different. Type 137 is used at 90° bends in pipelines to replace the occasions where Type 117 cannot handle high pressure differences.
1. Diaphragm cover
2. Diaphragm
3. Spring
4. Push rod
5. Yoke
6. Valve stem
7. Bonnet
8. Valve plug
9. Sleeve
10. Valve body
| 137-□□K(B) | 1: New series 1: Pneumatic diaphragm actuator 5: Angle valve 2: Cage structure |
| -□□ | Pressure range: such as 16: 1.6MPa K (B) gas on (off) type |
| 137-□□K(B) | Q: Adjusting the cut-off type |
| 137-□□K(B)G | G: High temperature type |
| 137-□□K(B)V | V: Sealing performance of corrugated pipes |
| 137-□□K(B)J | J: Jacket insulation type |
| 137-□□K(B)D | D: Low-temperature type |
| 137-□□K(B)S | S: Heat dissipation type |
| Allowable differential pressure | Same as Type 112 Pneumatic Film Sleeve Control Valve |
| External dimensions | Same as Type 112 Pneumatic Film Angle Single Seat Valve |
| Connection size and standard | Same as Type 112 Pneumatic Film Angle Single Seat Valve |
| Ordering notice | Same as Type 112 Pneumatic Film Angle Single Seat Valve |
| Part Name | Material |
| Valve body, valve cover | WCB(ZG230-450), WCC(ZG270-500), WC6(ZG15CrMo) CF8(304), CF8M(316), CF3(304L), CF3M(316L) |
| Valve core and sleeve | 304(0Cr18Ni9), 316(0Cr17Ni12Mo2), 316L(00Cr17Ni14Mo2) And overlay welding of Stellite alloy 17-4PH (precipitation-hardening stainless steel) |
| Filler | PTFE (polytetrafluoroethylene), PTFE (reinforced polytetrafluoroethylene), Grafoil (flexible graphite) |
| Sealing gasket | PTFE, stainless steel with graphite clip |
| Membrane cover | A3 (Q235, painted or powder-coated), 304 (used in special cases) |
| Corrugated diaphragm | Nitrile rubber clip nylon |
| Valve stem | 304, 316, 316L, 17-4PH |
Other material technical parameters can be changed according to the working conditions without prior notice!
| Nominal Diameter DN (mm) |
20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |
| Rated flow coefficient Kv | Straight line | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 |
| Equal percentage | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | |
| Rated stroke L (mm) | 16 | 25 | 40 | 60 | ||||||||
| Effective areaAe of membrane (cm²) | 280 | 400 | 600 | 1000 | ||||||||
| Nominal diameter DN (mm) | 250 | 300 | 350 | |||||||||
| Rated flow coefficient Kv |
Straight line | 1000 | 1650 | 2160 | ||||||||
| Equal percentage | 900 | 1500 | 200 | |||||||||
| Rated stroke L (mm) | 100 | |||||||||||
| Effective areaAe of membrane (cm²) | 1600 | |||||||||||
| Signal range Pr (kPa) | 20~100、40~200、80~240 | |||||||||||
| Air source pressure PS (MPa) | 0.14、0.25,0.30 | |||||||||||
| Inherent flow characteristics | Straight line, equal percentage | |||||||||||
| Inherently adjustable ratio R | 50:1 | |||||||||||
| Permissible leakage amount | Hard valve core balance type: Class III, Class IV; soft seal: Class VI | |||||||||||
| Nominal pressure PN |
MPa | 1.6, 2.5, 4.0, 6.4(6.3)/2.0, 5.0, 11.0, 15.0 | ||||||||||
| Bar | 16, 25, 40, 64(63), 100, 160/20, 50, 110, 150 | |||||||||||
| Lb | ANSI: Class150, Class300, Class600/Class900 | |||||||||||
| working temperature (℃) |
Normal temperature type | -20~200, -40~250, -60~250 | ||||||||||
| Heat dissipation type | -40~450, -60~450 | |||||||||||
| High-temperature type | 450-560 (using high-temperature materials) | |||||||||||
| Low-temperature type | -60~-100, -100~-200, -200~-250 | |||||||||||
| Adjusting the shut-off valve | -40-150 (valve core clamp PTFE), -60-200 (valve core clamp reinforced PTFE) | |||||||||||
1. Spring range: For air open type, 40-200KPa and 80-240KPa are preferred; 20-100KPa and 40-200KPa are preferred for air closed systems
2. The classification of working temperature is based on comprehensive factors such as the pressure temperature grade (GB9131-94) of the valve body material, operating conditions, and the sealing material of the valve, There are subtle differences in the division of countries
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