Abstract： ASME A112.1037:2015 pdf download.Performance requirements for pressurized flushing devices for plumbing fixtures. Primary control — the standard means by which the PFD is activated as designated by the manufacturer. Secondary control —...

ASME A112.1037:2015 pdf download.Performance requirements for pressurized flushing devices for plumbing fixtures.

Primary control — the standard means by which the PFD is activated as designated by the manufacturer.

Secondary control — an alternative means by which the PFD is activated as designated by the manufacturer.

Section III

3 Design and general requirements

3.1 Pressures

PFDs shall be designed to function at a supply pressure between 140 and 860 kPa (20 and 125 psi). In addition,

PFDs shall comply with Clause 4.2.

3.2 Temperatures

PFDs shall be designed to function with water temperature between 4 C and 30 C (40°F and 85°F).

3.3 Backflow prevention

PFDs incorporating backf low preventers shall comply with the requirements of Clause 4.3 or 4.4. When a backflow

preventer is not incorporated in the PFD, installation instructions shall identily the specific types of backflow prevention required.

3.4 Accessible designs

Operating controls intended for use in accessible designs shall

(a) be automatically controlled; or

(b) meet the following requirements:

(i) be operable with one hand;

(ii) not require tight grasping, pinching, or twisting of the wrist; and

(iii) require an operating force not greater than 22N (5 IbI)

3.S Control stop

If the manufacturer provides a control stop with the PFD, it shall be considered part of the PFD.

3.6 ConnectIons to water supply and fixtures

Tapered pipe threads shall conform to ASME 81.20.1. Straight threads shall conform to ASME WI .1.

Dimensions of solder-bent connections shall conform to ASME Bi 6.18 or ASME 816.22. Compression connections shall be compatible with SAE 1512.

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