Product / URH
URH 圆形排风口
设计美观且便于调节。
概述
- 排风口
- 安装在墙壁或吊顶上
- 可调节气流
- 可测量流量
- 安装时可使用也可以不使用独立的安装架
Dimensions and weight
|
NS |
ØW |
H |
ØD |
| 100 | 140 | 13 | 98 |
| 125 | 165 | 13 | 122 |
| 160 | 200 | 13 | 158 |
| 200 | 251 | 13 | 198 |
Weight
|
NS |
kg |
| 100 | 0.3 |
| 125 | 0.4 |
| 160 | 0.6 |
| 200 | 0.8 |
Material
|
Part |
Material |
Note |
| Collar | Steel | – |
| Central cone | Steel | – |
| Gasket | Polyurethane | – |
| Installation frame | Galvanised steel | Gasket of rubber compound |
| Protection ring | Steel | – |
| Finishing | Painted white (RAL 9003) |
Special colours available |
Accessories
|
Accessory |
Code |
Description |
| Cover plate | CS | For protection of the surfaces from smudging and for directing the air jet in a grid-structured ceiling |
| Extension part | EP | Extension part for detaching the valve from the surface/ standard height 50 mm |
| Installation frame | LF | Installation frame without gasket/ height 50 mm |
| Installation frame | GF | Installation frame with gasket/ height 50 mm |
| Installation frame | DF | Installation frame with duct dimensions can be installed directly to duct parts such as bending or T-branch etc |
Fig.1. Cover plate (CS) Fig.2. Extensions part (EP)
Fig.3. Installation frame (LF) Fig.4. Installation frame (GF)
Fig.5. Installation frame (DF)
Function
The valve throttles the exhaust airflow and attenuates the duct noise. The pressure drop is dependant on the position of the central cone. The desired exhaust airflow rate is adjusted during the balancing of the airflows in a ductwork system. After the adjustment the valve is locked at the required adjustment position.
Installation
The Halton URH exhaust valve is mounted with the aid of a separate installation frame LF, GF or DF. Push the installation frame into the duct and fix it. Push the valve into the installation frame and turn until it is firmly attached.
Alternatively model URH/B can be installed directly into a duct without an installation frame.
Installation with protection ring (CS)
|
NS |
Ø W2 |
| 100 | 290 |
| 125 | 315 |
| 160 | 350 |
| 200 | 400 |
Adjustment
The Halton URH valve is adjusted by rotating the central cone. Measure the opening (A) position (in mm) of the central cone. Set a probe inside the valve and measure the differential pressure with a manometer. The airflow rate is calculated using the formula below. After the adjustment, lock the central cone with the locking nut.
|
|
A |
k |
|
A |
k |
|
A |
k |
|
A |
k |
| -15 | 0,43 | -15 | 0,65 | -12 | 1,16 | 3 | 1,78 | ||||
| -12 | 0,63 | -12 | 0,92 | -9 | 1,51 | 6 | 2,46 | ||||
| -9 | 0,83 | -9 | 1,22 | -6 | 1,9 | 9 | 3,24 | ||||
| -6 | 1,02 | -6 | 1,53 | -3 | 2,31 | 12 | 3,97 | ||||
| -3 | 1,22 | -3 | 1,84 | 0 | 2,75 | 15 | 4,69 | ||||
| 0 | 1,42 | 0 | 2,17 | 3 | 3,25 | 20 | 5,88 | ||||
| 3 | 1,65 | 3 | 2,52 | 6 | 3,73 | 25 | 6,95 | ||||
| 6 | 1,88 | 6 | 2,83 | 9 | 4,22 | ||||||
| 9 | 2,11 | 9 | 3,14 | 12 | 4,67 | ||||||
| 12 | 2,33 | 12 | 3,46 | 15 | 5,12 | ||||||
| 15 | 3,77 | 18 | 5,58 |
Servicing
Code description
1. Central cone
2. Locking nut
3. Sleeve
Loosen the valve from the ductwork by turning counter-clockwise. Note the adjusted opening position of the central cone.
Wipe the parts with a damp cloth, instead of immersing in water. Reassemble valve in reverse order after cleaning.
Specification
The exhaust valve shall have an adjustable central cone and sleeve made of painted steel, with a white (RAL 9003) standard colour. The valve shall be fitted with a galvanised steel installation frame. The installation frame shall incorporate a sealing gasket.
Alternative: The valve shall be fixed with springs directly into a duct.
The opening position of the central cone shall be adjusted during balancing in order to achieve required pressure loss and airflow rate. After balancing the central cone shall be locked to the selected adjustment position.
Order Code
URH/S-D
S = Model
A Standard
B With fastening springs
D = Connection size
100, 125, 160, 200
Other options and accessories
CO = Colour
SW White (RAL 9003)
X Special colour (RAL xxxx)
ZT = Tailored product
N No
Y Yes (ETO)
Sub products
CS Cover plate (ULA)
EP Extension part
DF Installation frame for duct parts
GF Installation frame with gasket
LF Installation frame without gasket
Code example
URH/A-100, CO=SW, ZT=N
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