比例閥與傳統(tǒng)電路不同，負(fù)載感應(yīng)中執(zhí)行器上的壓力信號(hào)不斷接收，并用作分配器和泵控制的先導(dǎo)參考點(diǎn)。
因此，與傳統(tǒng)的回路相比，液壓系統(tǒng)有效地工作并且每個(gè)工作部分消耗足夠的能量。負(fù)載感應(yīng)比例方向控制閥由電子馬達(dá)驅(qū)動(dòng)，可以超精細(xì)地驅(qū)動(dòng)滑閥。GPV比例方向控制閥使運(yùn)動(dòng)的應(yīng)用更加平穩(wěn)可靠。
本產(chǎn)品顯示了在40°C-104°F溫度下通過(guò)粘度為46 mm2/s–46 cSt的礦物油測(cè)量的技術(shù)規(guī)范和圖表。
比例閥GPV 130主要特點(diǎn)
平穩(wěn)可靠
精細(xì)度高
抗污染性能強(qiáng)
電信號(hào)便于傳遞，能簡(jiǎn)單地實(shí)現(xiàn)遠(yuǎn)距離控制
比例閥GPV 130主要應(yīng)用
挖掘機(jī)
前置裝載機(jī)
起重機(jī)
反鏟裝載機(jī)
需要比例控制的船舶
比例閥GPV 130產(chǎn)品技術(shù)參數(shù)
| Max. pressure
| Port P continuous?1) | 350 bar | [5075 psi] |
| Port P intermittent?5) | 400 bar | [5800 psi] | |
| Port A/B continuous | 350 bar | [5075 psi] | |
| Port A/B intermittent | 420 bar | [6090 psi] | |
| Port T, static/dynamic | 25/40 bar | [365/580 psi] | |
| Oil flow rated | Port P?3) 4) | 140/230 l/min. | [37/61 US gal/min] |
| Port A/B, with press. comp.2) | 100 l/min. | [26.4 US gal/min] | |
| Port A/B, without press. comp. | 130 l/min. | [34 US gal/min] | |
| Spool travel, standard | ± 7 mm | [±0.28 in] | |
| Spool travel, float position | Proportional range | ± 4.8 mm | [±0.19 in] |
| Float position | ± 8 mm | [±0.32 in] | |
| Dead band, flow control spools | Standard | ± 1.5 mm | [±0.06 in] |
| Linear characteristic | ± 0.8 mm | [±0.03 in] | |
| Max. internal leakage at 100 bar [1450 psi] and 21mm2/s[102 SUS]
| A/B ? T without shock valve | 20 cm3/min. | [1.85 in3/min] |
| A/B ? T with shock valve | 25 cm3/min. | [2.15 in3/min] | |
| Oil temperature (inlet temperature) | Recommended temperature | 30 ? 60 °C | [86 ? 140 °F] |
| Min. temperature | -30 °C | [-22 °F] | |
| Max. temperature | +90 °C | [194 °F] | |
| Ambient temperature | -30 ? 60 °C | [-22 ? 140 °F] | |
| Oil viscosity
| Operating range | 12 – 75 mm2/s | [65 – 347 SUS] |
| Min. viscosity | 4 mm2/s | [39 SUS] | |
| Max. viscosity | 460 mm2/s | [2128 SUS] | |
| Filtration (See chapter Filtration) | Max. contamination(ISO 4406) | 23/19/16 | 23/19/16 |
| Oil consumption in pilot oil pressure reduction valve | 5 l/min. | [0.13 US gal/min] | |
- With PVSI end plate. With PVS end plate max. 300 bar [4351psi].
- For 130 l/min contact GMS Product Application Engineering.
- In open circuit systems with short P-hoses/tubes, attention should be paid to pressure peaks at flows >100 l/min [26.4 US gal/min].
- For system with mid inlet PVPVM.
- Intermittent pressure at max. 250,000 cycles of full GPV life time cycles, with PVSI end plate. The maximum intermittent pressure at max. 250,000 cycles stresses the need to confirm application duty cycle before proceeding with specification. For further information contact GMS Product Application Engineering.
