系列7双止回防回流阀
通径:DN15至DN32
SERIES 7 Dual Check Backflow Preventers
Size: 1/2" through 11/4"
(13-32mm)
可提供更多种进口/出口通径、螺纹类型,以及连接方式 - 包括改进的压缩接头和软管连接 - 系列7可以安装在更多种管道系统上,可以连接更多种类的仪表、铜定位器,以及仪表箱。
Available with an extensive combination of inlet/outlet
sizes, types of thread, and end connections –including retrofit compression
fittings and hose connections–the Series 7 can be installed in a variety
of piping configurations, and in conjunction with a wide range of meter
horns, copper setters, and meter boxes.
 标准
STANDARDS
通过美国国家标准化组织(ANSI)和美国卫生工程师协会(ASSE)标准1024的检测和认证。通过加拿大工业标准协会(CSA)标准号B64.6的认证。重要的是:咨询有关主管部门,了解当地有关的安装要求。
Tested and certified to meet ANSI/ASSE Standard
1024. CSA Certified to Standard No. B64.6. Important: Inquire with governing
authorities for local installation requirements.
规格说明
SPECIFICATIONS
双止回防回流阀应该满足美国国家标准化组织(ANSI)和美国卫生工程师协会(ASSE)标准1024的室内应用要求,其密封应该获得认证。这种装置应该是青铜阀体,其接头不止一个,配置有带钻孔接头螺母,能够接受防篡改锁线。黄铜标签指示流向,并采用耐腐蚀机械式紧固件固定在阀体上。这种双止回阀应该是美国瓦茨调节阀公司的系列7。(请选择最适合实际用途的型号。)
The dual check backflow preventer shall meet the
domestic requirements of ANSI/ASSE Standard 1024, and bear the seal of
approval. It shall be bronze-bodied and include not less than one union,
with the union nut drilled to accept a tamper-proofing lock wire. A brass
identification tag indicating direction of flow shall be securely attached
to the valve body by corrosion-resistant mechanical fasteners. The dual
check shall be Watts Regulator Company's Series 7. (Please select the
model best suited to your application.)
可提供的产品
PRODUCT AVAILABILITIES
系列7:可提供的进口/出口连接 - 类型,可提供的订购编号,通径。
Series 7: Inlet/Outlet Connections – Types available,
ordering code, sizes available.
连接类型
Connection
Type |
连接编号
Connection
Code |
可提供的通径
Sizes Available |
英寸
inches |
毫米
mm |
美国标准管
内螺纹
National Pipe
Thread Female |
2 |
1/2, 3/4, 1 |
13,19,25 |
美国标准管
外螺纹
National Pipe
Thread Male |
3 |
1/2, 3/4, 1, 11/4 |
13,19,25,31 |
仪表内螺纹*
Meter Thread Female* |
4 |
3/4, 1, 11/4 |
19,25,31 |
仪表外螺纹*
Meter Thread Male* |
5 |
3/4, 1, 11/4 |
19,25,31 |
压紧内连接
Pack Joint Female |
6 |
3/4, 1 |
19,25 |
压紧外连接
Pack Joint Male |
7 |
3/4, 1 |
19,25 |
内焊接
Female Solder |
8 |
3/4, 1 |
19,25 |
外焊接
Male Solder |
9 |
3/4, 1 |
19,25 |
内仪表螺纹
(旋转)
Female Meter Thread (Swivel) |
10 |
3/4, 1, 11/4 |
19,25,31 |
外软管螺纹
Male Hose Thread |
11 |
3/4 |
19 |
内软管螺纹
Female Hose Thread |
12 |
3/4 |
19 |
外仪表轭架螺纹
Male Meter Yoke Thread |
13 |
3/4 |
19 |
* 参阅第10和11页的“如何订购”
可提供所有进口/出口类型和通径的接头(U)连接。
* See "How To Order" on pages 10,
11
Union (U) Connections available on all inlet/outlet types and sizes. |
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住宅室内地下室
采用水表支撑的铜角安装
Residential In-House basement
installation utilizing copper horn
water meter support.
美国瓦茨型号7双止回阀
Watts No. 7 Dual Check
材料
MATERIALS
铸青铜阀体,双塑料止回模块,乙酰树脂和PPO注射模压,硅阀瓣和丁纳橡胶N密封,不锈钢弹簧,一个接头和O形环接头密封。(DN20通径也可提供黄铜材质。请参阅第7页的系列7B。)
Cast bronze body, durable plastic check modules,
injection molded of acetyl resin and PPO, silicone discs and Buna 'N'
seals, stainless steel springs, one union and "O" ring union seal. (3/4"
size also available in brass. See Series 7B p.7)
压力/温度
PRESSURE / TEMPERATURE
最大压力:150 psi (10 bars). 最小压力:10 psi (69 kPa). 工作温度:0.6oC至60oC(持续温度);间歇温度82.2oC.
Max. pressure: 150 psi (10 bars). Min. pressure:
10 psi (69 kPa). Working temperature: 33oF to 140oF
sustained; intermittent to 180oF (0.6oC to 60oC
sustained; intermittent to 82.2oC)
尺寸/重量
DIMENSIONS / WEIGHT

| A |
B |
B1 |
重量
Weight |
英寸 inches |
毫米 mm |
英寸 inches |
毫米 mm |
英寸 inches |
毫米 mm |
磅
lbs. |
公斤
kgs. |
| 43/8 |
110 |
25/16 |
58 |
13/4 |
44 |
1.75 |
0.79 |
|