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产品简介/Porduct Introduction
ST2系列热力膨胀阀通过制冷剂的过热度对进入蒸发器中的液体制冷剂的供给量进行调节，这种阀适用于干式蒸发器中制冷剂的自动调节供给。
具有外部压力平衡和内部压力平衡两种形式，有效的外部压力平衡系统消除了由于蒸发器压力损失带来的影响。
可换的阀芯易于存储，方便机组调节容量与系统匹配，更便于维修。
蒸发温度范围大，从-40℃～+10℃
Thermostatic expansion valve regulate ;the flow rate of refrigerant into evaporators according ;to its degree of superheat.
Both the iternal equalizer and external equalizer systems are furnished,especially, the external equalizer type efficiently eliminates the influence resulted from the loss od evaporator pressure.
The interchangeable orifice is easy to store and maintain,making the equipment to match with the system with ease.
Wide range of evaporator temperature: -40℃～+10℃
技术参数/Technical Parameter
型号 Model | 平衡方式 Equalization | 连接方式 Connection Type | 连接尺寸 进口×出口 Connection Inlet ×Outlet | 外平衡管尺寸 Equalization connection | 毛细管长度 Capillary Length(m) | |
inch | mm | |||||
ST2 | 内平衡/Internal | 螺纹 SAE | 3/8”×1/2” | 10×12 | 1/4”(6mm) | 1 |
STE2 | 外平衡/Externa | |||||
HT2 | 内平衡/Internal | 焊接 Solder ODF | ||||
HTE2 | 外平衡/External | |||||
订货型号/Ordering Code
连接方式 Connection Type | 平衡方式 Equalization | R12 | R134A | R22 | R404A/R507 | R407C |
螺纹 SAE | 内平衡/Internal | STF2 | STN2 | STX2 | STS2 | STZ2 |
外平衡/Externa | STEF2 | STEN2 | STEX2 | STES2 | STEZ2 | |
焊接 Solder ODF | 内平衡/Internal | HTF2 | HTN2 | HTX2 | HTS2 | HTZ2 |
外平衡/External | HTEF2 | HTEN2 | HTEX2 | HTES2 | HTEZ2 |
名义制冷量/Nominal Refrigerating Capacity(-40℃～+10℃)
阀芯Orifice Size | R22 | R4047C | R134a | R404A/R507 | ||||
TR | KW | TR | KW | TR | KW | TR | KW | |
0X | 0.15 | 0.5 | 0.16 | 0.5 | 0.11 | 0.4 | 0.11 | 0.38 |
00 | 0.3 | 1.0 | 0.3 | 1.1 | 0.25 | 0.9 | 0.21 | 0.7 |
01 | 0.7 | 2.5 | 0.8 | 2.7 | 0.5 | 1.8 | 0.45 | 1.6 |
02 | 1.0 | 3.5 | 1.1 | 3.8 | 0.8 | 2.6 | 0.6 | 2.1 |
03 | 1.5 | 5.2 | 1.6 | 5.6 | 1.3 | 4.6 | 1.2 | 4.2 |
04 | 2.3 | 8.0 | 2.5 | 8.6 | 1.9 | 6.7 | 1.7 | 6.0 |
05 | 3.0 | 10.5 | 3.2 | 11.3 | 2.5 | 8.6 | 2.2 | 7.7 |
06 | 4.5 | 15.5 | 4.9 | 16.7 | 3.0 | 10.5 | 2.6 | 9.1 |
注：名义制冷量基于冷凝温度32℃，蒸发温度5℃。
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