3. Listen for slight click when buttons are first pushed. If not heard, micro switch is broken, replace wire harness (4-000-046).

PRV valve

A2: A pressure regulator is a spring-loaded valve that regulates pressure on the downstream (house) side of the valve. Altering the degree of spring compression changes the downstream pressure.

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The Pipet-Aid XP features three speeds on the buttons; (S)low, (M)edium and (F)ast. On the XPGravity, the fast speed on the dispense button is replaced with a (G)ravity drain. This featureallows the user to dispense the liquid by gravity; allowing the liquid to simply fall out of thepipette when the button is pressed…the motor will not run in this mode.

Regulator

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Unit needs to be recharged. Plug in power supply/charger and use unit while it charges, use only power supply/charger 4-000-065. If LED does not light, replace battery (4-000-036).

A6: This is partly a matter of owner preference. Most homeowners set their pressure at approximately 50 pounds per square inch (psi). Lower settings will help conserve water and prolong plumbing and fitting life while higher settings will have the opposite effects.

1. Filter has been wetted. Replace with 4-000-0512. TC gasket missing in nosepiece, requires one on each end of filter (4-000-057)

Pressureregulating valve

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Portable Pipet-Aid XL – 4-000-105, 4-000-2051. Plug in power supply/charger and use unit while it charges. Use only power supply/charger 4-000-065. Battery dead. Replace with (4-000-036).

1. Battery needs to be charged overnight.2. Battery dead. Replace with (4-000-035).a. Cut the label on the bottom along the seam of the handle. Remove the nose piece followed by the 5 screws. Flip the unit over so that the screw holes are now facing down, then you can open up the top half of the Pipet-Aid. The battery is held down bydouble-sided tape.

For use in a bio-hazardous environment, a filtration unit can be installed on the Pipet-Aid pump which will filter both vacuum and pressure lines. Incorporating dual filters, the Pipet-Aid Biohazard Filter Kit has a retention efficiency of 99.9999+% for 0.1 micron particles and droplets.

PressureReducing Valve

A5: Yes. A homeowner or a plumber can use manufacturer's instructions for adjustment. The adjustment mechanism is usually a screw on top of the regulator. Turning this screw changes the degree of spring compression. Generally, turning the screw clockwise increases house water pressure and turning the screw counter-clockwise reduces house pressure. Repair kits for rebuilding pressure regulators are usually available from the manufacturer.

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Pipet-Aid XP/XP2: It should take up to two and a half hours to fully charge the battery. You can still use the Pipet-Aid while it’s plugged into the charger; the charger also seconds as a power supply.

2. Check valve in nosepiece needs to be cleaned out. Push wire or paper clip through black O-ring to open up check valve. When opened, rinse float and shell with water or alcohol. Allow to dry and reassemble. Shake and listen for float to rattle. Reassemble into nosepiece and check for aspiration.

A1: A household water pressure regulator reduces the water pressure from the public water main to a pressure that is usable by the customer and compatible with normal household plumbing and fixtures. It also helps prevent pressure surges from entering the household plumbing from the public main. High water pressure can result in dripping faucets and water pipes, and it can damage appliances.

The District is committed to providing all documents hosted on the website in an accessible format or making accessible alternatives available.

Reduced Pressure Zone (RPZ) valves are used as a backflow preventer, to protect water supplies from contamination. More specifically, they're used between your ...

Watts 1" 800M4-QT Pressure Vacuum Breaker – Leaded Bronze. Related Items. Febco 1" 765 PVB Leaded - Backflow Prevention Repair Parts.

A3: On new installations, the pressure regulator is usually located where the water line comes into the home just inside the foundation (next to main shut-off valve). On some older installations, the pressure regulator might be found on the street side of the water meter. Distribution department staff can help with determining the location of new regulators and helping to find existing regulators.

Related Code Sections ... Dielectric unions where installed at points of connection where there is a dissimilarity of metals shall be in accordance with ASSE 1079 ...

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Regulating valve

1. Replace rubber insert (4-000-002) if worn2. Poor seal around filter; use Drummond filters (4-000-051) and be sure both black, rubbergaskets are on either end of the filter.3. Handle connector tubing has a pin hole in it. Cut out if long enough or replace (4-000-013).

Drummond Scientific's Pipet-Aid® XL Pipette Controller adds comfort without giving up control when under a hood. Repetitive lifting and angling the arm can be exhausting. Arm motion is reduced, and extended pipet use is made easier with the ergonomically designed, longer handle and adjustable sliding hand rest. Enjoy the accuracy, performance, and convenience of our industry-leading Pipet-Aids in a state-of-the-art tool that alleviates arm fatigue.

1. Replace rubber insert (4-000-002) if worn2. Poor seal around filter; use Drummond filters (4-000-051) and be sure both black, rubbergaskets are on either end of the filter.3. Handle connector tubing has a pin hole in it. Cut out if long enough or replace (4-000-013).

Butterfly valve

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A8: There are two reasons: 1.) Most public water mains are supplied by pumps or pressure reducing valves. This equipment may produce temporary high pressure surges, which can be transmitted to household plumbing. A properly operating household pressure regulator will help prevent these surges from entering your plumbing. 2.) Your municipality might increase the pressure in the main line that supplies your house.

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8 Apr 2008 — I need a simple formula that I can put into Excel, to workout the final temperature of 2 different amounts of water.

A7: Yes. Universal plumbing code requires that pressure regulators be installed to prevent high pressure-related damage to household plumbing, fixtures and equipment.

3. Battery damaged by use of non-Drummond charger. Replace battery (4-000-035). Charger will have Cat# 4-000-030 printed on it and should be black.

Our unique rubber insert allows the user to use any serological, volumetric and/or blow-out pipettes in either glass, plastic or something similar with sizes ranging from 1 to 100mL.

Waterpressure regulator

Pipet-Aid XL: It should take up to two and a half hours to fully charge the battery. You can still use the Pipet-Aid while it’s plugged into the charger. The charger also seconds as a power supply.

The Pipet-Aid® XL also features a new, quieter, more powerful pump and comes complete with a power supply/charger, four extra filters, a holster-type wall bracket, and a removable stand.

Self-operated, direct-acting regulators help control temperature of water, steam, or other liquid systems without electricity.

Original Portable Pipet-Aid: Charging the unit for up to 5 hours should completely charge the battery. It is recommended to keep the charger plugged in whenever not in use; this will ensure optimum battery life. All rechargeable batteries have a limited life span. Generally each battery will last approximately 1000 cycles (charges) and then must be replaced.

A4: The best way to know if the pressure regulator is working is to install a pressure gauge on each side of the regulator. If the upstream gauge reads higher than the downstream gauge, then the regulator is probably working. Some symptoms of pressure regulator malfunction include sustained or initial bursts of unusually high pressure at faucets and shower heads and water being discharged from the relief valve on your domestic water heater. Sudden loss in pressure is another sign of a malfunctioning regulator.

1. Rubber insert has cotton plugs blocking flow. Clean out cotton plugs or replace rubber insert (4-000-002).2. Buttons in valve body dirty. Clean or replace (4-000-021).

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Combination 9D Backflow Preventer and 1156F Fill Valve for Hot Water Boilers - 1/2". Used on boiler feed lines to provide make up waterto the boiler and ...

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