喷嘴为什么关键

Why the nozzle matters

喷嘴决定喷水角度与局部压力，选错会损伤表面或伤设备。注意：颜色只表示喷水角度，实际内部孔径须按机器 PSI×GPM 另算。一套彩色快接喷嘴是每台高压清洗机的标配。

The nozzle sets spray angle and local pressure; the wrong one damages surfaces or the machine. Note: color only shows spray angle—the actual orifice size must be calculated from the machine's PSI×GPM. A set of color-coded quick-connect tips ships with every pressure washer.

角度色标：0/15/25/40/65 度

Angle color codes: 0/15/25/40/65 degrees

0°红（直线水柱，混凝土、金属顽固污，禁用于漆面与木材）；15°黄（除漆、重油污）；25°绿（通用，车、甲板、外墙，最常用）；40°白（冲洗、车窗、户外家具等精细面）；65°黑（皂液 / 预喷，低压打泡沫）。商用日常标准化 15°/25°/40° 三色即可覆盖约 90% 工况。

0° red (straight stream, concrete/metal stubbon soil; never on paint or wood); 15° yellow (paint stripping, heavy grease); 25° green (general use—cars, decks, siding; most common); 40° white (rinsing, windows, outdoor furniture, delicate surfaces); 65° black (soap/pre-soak, low-pressure foam). For daily commercial work, standard 15°/25°/40° covers about 90% of tasks.

孔径与 PSI×GPM

Orifice size and PSI×GPM

孔径必须匹配机器额定 GPM 与 PSI：过小→背压高、损坏泵（卸荷阀频繁启停甚至电机烧毁）；过大→压力流失、形同水管。经验公式：孔径 ≈ GPM / (0.0095 × √PSI)。例如 3000 PSI、3.0 GPM 对应约 3.0 号孔径。

The orifice must match the machine's rated GPM and PSI: too small → high back-pressure and pump damage (unloader cycling, even motor burnout); too large → pressure loss, like a garden hose. Rule of thumb: orifice ≈ GPM / (0.0095 × √PSI). E.g. 3000 PSI, 3.0 GPM ≈ size 3.0.

CU 清洁单位

Cleaning Units (CU)

清洁单位 CU = PSI × GPM，是衡量清洁力的综合指标。混凝土有效清洗通常需 ≥ 3000 CU；住宅多在 2000–6000 CU。选喷嘴与机型时，可结合 CU 判断是否够力。

Cleaning Units CU = PSI × GPM is the composite cleaning-power metric. Effective concrete cleaning usually needs ≥ 3000 CU; residential work typically falls in 2000–6000 CU. Use CU alongside nozzle choice to judge adequacy.

涡轮 / 旋转喷嘴

Turbo / rotary nozzles

涡轮嘴把 0° 威力与广覆盖结合，旋转冲击力强，仅用于混凝土、砖石等硬面；禁用于车漆与木立面（会剥漆、劈裂木材）。它不属于日常三色，属专用附件。

A turbo nozzle combines 0° power with wide coverage via rapid rotation—for hard surfaces like concrete and brick only. Never on vehicle paint or wood siding (it strips paint and splits wood). It is a specialty accessory, not part of the daily three.

安全与正确用法

Safety and correct use

遵循“先宽后窄”：从 40° 白嘴、距面 2–3 英尺起步，按需收窄到 25°/15°。佩戴护目镜与手套；快接喷嘴三步锁定（拉环—插到底—回弹—轻拉确认）防射出；严禁对人 / 动物。0°/15° 可造成高压注射伤（脏水射入皮下），须立即就医。按机器铭牌 GPM/PSI 查孔径表选配。ApexClean 高压清洗机 yongle-ylbd201 / ylbd211 / ylbd701 配套多规格喷嘴与枪杆。

Follow 'start wide': begin with the 40° white tip 2–3 ft from the surface, narrowing to 25°/15° only as needed. Wear goggles and gloves; seat quick-connect tips in three steps (pull collar, push to bottom, release, tug to confirm) to prevent ejection; never aim at people/animals. 0°/15° can cause high-pressure injection injuries (dirty water forced under skin)—seek immediate medical care. Size orifices from the nameplate GPM/PSI. ApexClean washers yongle-ylbd201 / ylbd211 / ylbd701 ship with multiple nozzle angles and wands.