Watts RMC Model 009

Reduced Pressure Zone Device (RPZD)

Sizes	DN15 - DN80	COMPACT PERFECT FOR TIGHT INSTALLATIONS
Hazard Rating	High
Must be registered	Yes
Standard	AS2845.1
Testable	Yes
Protection against back pressure and back-siphonage?	Yes

Testing & Maintenance requirements	Test after installation prior to service. Maintain in working order and inspect for operational function at intervals not exceeding twelve months. These functions to be carried out by authorised licensed testers.
Pressure & Temperature	Working Pressure: 1400kPa Test Pressure: 2000kPa Maximum Working Temperature: 82ºC (DN15 - DN50), 60ºC (DN65 - DN80)

Specific Installation Requirements

	Have free ventilation at all times.
	Not to be subject to flooding.
	In the horizontal plane, vent is to point downwards with 300mm minimum clearance from ground to vent.
Typical Outdoor Above Ground Installation

	In the vertical plane, first check valve must always be above relief vent opening.
	Not to be located in a pit.
	All devices shall be readily accessible.
	Drainage from vent port to be readily visible but not a hazard or nuisance.
	Line strainers to be fitted immediately upstream (except in fire services).
	Approved resilient seated isolation valves to be installed immediately upstream and downstream of device.
	Where water supply cannot be interrupted, parallel installations are required so that maintenance is possible.

Specification The device shall consist of a pressure differential relief valve located in a zone between two positive seating, centre guided, encapsulated spring type check valves. If external sensing lines are utilised, they shall be flexible and constructed so as not to be subjected to crimping, pinching, or collapse. All units, no matter what nominal size, must be maintainable in line and have field replaceable seats, seals and spring assemblies. All seat/seal assemblies must be secured by stainless steel bolts or screws for ease of maintenance. All test cocks shall be positioned on top of the valve for ease of access and testing. Sizes DN15 - DN50 will be Gunmetal, DN65 - DN80 will be Fusion Bonded Epoxy Coated Cast Iron. - WATTS/RMC™ 009 OR EQUIVALENT
Specifications	Printable version of this Page