Try using the Tyco Model CV-1F Check Valve, just remove the cover and takeout the check, reinstall the cover plate (4 bolts) and let it flow, with due caution for traffic, foliage, landscaping, pedestrians, dog and cats. Heck, we all do the internal inspection of the check valve every five years anyway, here is what I do:
CHECK VALVES: Inspection: Valves shall be inspected internally every 5 years to verify that all components operate correctly, move freely, and are in good condition. Maintenance: Internal components shall be cleaned, repaired, or replaced as necessary in accordance with the manufacturer's instructions Check valves in sprinkler system shall be UL listed or FM approved, have hand hole covers to provide adequate access to facilitate inspection and repair, without the removal of the valve from the system, and shall be listed for installation in the vertical or horizontal position. Wafer check valves are unacceptable. All check valves shall have a working water pressure of 250 PSI. The alarm check valves (ACV) or device acting as a ACV shall be equipped with gauge connections on the supply side of the valve clapper or backflow device. (Test Cock 1 on a DCVA backflow preventer) TESTING: NFPA 13, Section 8.16.4.6.1 Backflow Prevention Valves Means shall be provided downstream of all backflow prevention valves for flow tests at system demand. The full flow test of the backflow prevention valve can be performed with a test header or other connection downstream of the valve. When flow to a visible drain cannot be accomplished, closed loop flow can be acceptable if a flow meter or site glass is incorporated into the system to ensure flow. For backflow preventers sized 2" and under, the forward flow test shall be acceptable to conduct without measuring flow, where the test outlet is of a size to flow the system demand All backflow preventers installed in fire protection system piping shall be tested annually in accordance with the following: (1) A forward flow test shall be conducted at the designed flow rate, including hose stream demand, of the system, where hydrants or inside hose stations are located downstream of the backflow preventer. (2) A backflow performance test, as required by the authority having jurisdiction, shall be conducted at the completion of the forward flow test. FRANK J. HERRICK CITY OF LEAWOOD FIRE DEPARTMENT OFFICE OF THE FIRE MARSHAL 14801 MISSION ROAD LEAWOOD, KS. 66224-9560 OFFICE: 913.681.6788 x 26 FAX: 913.681.2399 Fire Sprinklers Save Lives, Property, the Environment, and Water - Protect what you value most! -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, May 10, 2010 3:35 PM To: [email protected] Subject: Sprinklerforum Digest, Vol 10, Issue 7 Send Sprinklerforum mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Sprinklerforum digest..." _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
