Dorot Fire Protection Division Model 68 DE\ EL\ PORV\ PR Electrically and Pneumatically Actuated, Pressure Reducing, Remote-Reset, Deluge Valve Certification & compliance by design ANSI FCI 70- Class VI seat leakage class UL listed under VLFT category Fire tested to EN ISO 68-5:006 SIL 3-4 to IEC 65508/65 in redundant system configuration Lloyd s & ABS type approvals Designed for High-pressure (PN5/375psi), high-flow deluge systems Regulating downstream pressure regardless of upstream pressure and flow fluctuations Automatic or manual emergency actuation Hazardous-flammable and explosion classified area fire suppression Onshore & Offshore, Naval, Industrial, Commercial & Residential fire suppression Features Superior design featuring exceptionally low pressure losses at high flow rates Simple field adjustable pressure setting with no special tools or system downtime Low to negligible lifelong maintenance costs thanks to its simple internal trim design Simple, comprised of 3 main parts, no expertise required for maintenance Fresh or Brackish water, seawater and foam Out of the box fully assembled & tested valves All valves are factory trimmed for both vertical & horizontal installations without modification Extensive valve & trim materials selection and corrosion protection coating to EN944 C4, C5 & C5M Typical applications Automatic or Manual actuated Fire Suppression Systems Petrochemical, Oil & Gas Installations Tunnels Power Generation, Transformer & Transmission Plants Flammable Storage Hangars & Airport terminals Onshore-offshore Mining Deluge PR Valves
General description and operation modes This electrically and pneumatically actuated, pressure reducing, remote-reset deluge valve is designed for fire protection systems controlled and actuated by an air or Gas dry pilot-line and an electric release system. The basic control valve type used in this deluge system is a direct-sealing elastomeric diaphragm, hydraulically operated control valve engineered specifically for fire protection systems. In the standby position, the deluge valve is held closed by the upstream water pressure, trapped in the valve's control chamber. The water pressure enters the control chamber through the priming line ball valve [], a Y-type strainer [3], a check valve [4] and a T-restrictor [5]. Under fire conditions, the deluge valve opens automatically under any of the following circumstances:. A fire alarm control panel ( panel) energizes the 3/-way N.O. solenoid [0] (or de-energizes the coil of a continuously energized ED 00% normally closed solenoid for SIL 3-4 rated systems).. The pressure in the dry (pneumatically-pressurized) pilot-line drops, following bursting of one (or more) of the automatic sprinklers. When this happens, the pressure in the relay valve drops, causing it to open and allowing the water to begin to drain from the deluge valve s control chamber through the pressure reducing pilot []. The deluge valve opens instantly, regulating to a steady, preset downstream pressure, regardless of upstream pressure or flow rate fluctuations. This allows water to flow into the pipeline and through the open sprinklers over the protected area. Manual emergency actuation is enabled by opening the emergency manual activation valve. When connected through the pressure reducing pilot [] (upon request), manual actuation causes the deluge valve to regulate the downstream pressure regardless of upstream pressure or flow rate fluctuations. If unspecified, the manual activation valve drains the water to the atmosphere, allowing the deluge valve to open fully. When actuated, the deluge valve opens instantly and allows water to flow into the pipeline and through the open sprinklers over the protected area. Resetting, maintenance and periodic testing instructions must be followed as described in detail in the relevant Dorot DE\EL\PORV\PR model's IOM (Installation, Operation & Maintenance) manual. 68P-DE\EL\PORV\PR 68P-DE\EL\PORV\PR 68P-DE\EL\PORV\PR Standby Position Electrically Actuated & Pressure Reducing [0] [] [3][4] [5] [] [0] [] [3] [4] [5] [] [] [] To System Pneumatically Actuated & Pressure Reducing Manually Actuated & Pressure Reducing [] [3] [4] [5] [0] [] [] [3] [4] [5] [0] [] [] To System [] To System
Typical control trim materials ID Description Standard POG () Applications Dorot valve body See Series 00 Engineering data () Ball valve Brass \ SST ball SST36 3 Y-Type strainer Brass \ SST screen SST36 4 Check valve Brass SST36 5 T-restrictor Brass SST36 6 Manual emergency valve Brass SST36 7 Drip valve Brass SST36 8 Pressure gauge Brass case \ SST connection SST36 9 66-UL relay Brass SST36 0 3/-way N.O. solenoid (3) Brass SST36 CXPR Pressure reducing pilot Brass \ SST36 seat SST36 () Petrochemical, Oil & Gas () Refer to material selection guidelines, Engineering Data - Materials: Ductile Iron A-536 65-45-; Cast Steel A-6 WCB; Cast Steel A-35 LCB; Austenitic Stainless-Steel A-35/CF8M; Super Duplex 507; Nickel-Aluminum-Bronze B-48 UNS C95800 (3) Refer to solenoid selection guidelines 6 8 8 5 4 3 9 8 7 0 3
General arrangement and valve dimensions Valve &.5 (50&65) 3 (80) 4 (00) 6 (50) 8 (00) 0 (50) inch mm inch mm inch mm inch mm inch mm inch mm A 9 / 8 3 3 / 6 30 4 356 7 3 / 6 436 0 7 / 8 530 5 / 8 636 B 5 / 6 3 5 / 6 3 5 / 6 3 5 / 6 3 5 / 6 3 / 38 C 9 5 / 8 44 9 5 / 8 44 9 5 / 8 44 9 5 / 8 44 0 3 / 8 65 / 38 D 0 3 / 8 64 0 7 / 8 77 5 / 6 88 5 / 8 30 3 5 / 6 338 4 5 / 6 364 E 6 / 6 69 7 3 / 6 8 7 5 / 8 93 8 7 / 8 5 9 5 / 8 43 0 5 / 8 69 F 3 3 / 8 88 4 / 8 05 4 0 5 7 / 8 50 7 / 8 80 8 / 5 G 0 / 68 3 / 6 34 5 / 6 34 6 / 8 409 8 5 / 8 47 9 / 494 Approx. Weight * Approximate dimensions Ibs kg Ibs kg Ibs kg Ibs kg Ibs kg Ibs kg 35 6 77 35 95 43 76 80 8 8 430 95 D E F G B C A Optional Upstream Drain Valve 47 Brass 90 SST 4
Typical system layout Dorot s DE\EL\PORV\PR, electrically and pneumatically actuated, pressure reducing, remote-reset deluge valve, is held shut drip-tight in its standby position. When a fire alarm control panel energizes the 3/ way N.O. solenoid (or de-energizes the coil of a continuously energized ED 00% normally closed solenoid for SIL 3-4 rated systems) or when one (or more) of the automatic sprinklers on the pilot-line burst, the deluge valve's control chamber begins to drain through the pressure reducing pilot. The deluge valve regulates to a steady, preset downstream pressure, regardless of upstream pressure or flow rate fluctuations. 4 5 6 3 CXPR pressure reducing pilot Pneumatically and electrically actuated, pressure reducing, remote-reset deluge valve 3 PPCS (Pneumatic Pressure Control System) 4 Dry (pneumatically-pressurized) pilot-line 5 Pilot line - test ball valve 6 Fire alarm control panel 5 Pressure reducing feature
Ordering guide 68 P SS - 3 - AN5RF - DE\EL\PORV\PR - S - PI-HA-... Model 68 68 Optional add-on Optional add-on PI Pressure switch Spring P HA Alarm test trim Position Indicator I UV Upstream drain valve Material LS Limit-proximity switch Ductile Iron Ex Explosion-proof Cast Steel CS Trim CF8M (SST36) SS Brass-Copper Ni-Al-Br NAB S Stainless Steel 36 Size (inch) -4 X Other Ordering example: 68PSS-3-AN5RF-DE\EL\PORV\PR-S-PI-HA Technical data: Media up to 80 C = 76 F Elastomers suitable for extreme climates are available upon request. Sizes: Straight Flow: -4 Angle:.5-8 UL listed sizes: Model 68: -0 End connections: Flanged: ISO PN0, ISO-PN6 & ISO-PN5 ANSI B6.4 Class # 50 and # 300 AS Tables D & E, JIS Additional options available upon request Grooved: Sizes: -8 AN5RF AN30RF GRV ISO PN6 ISO PN5 xxx Pressure rating: 50 psi for Class #50 375 psi for Class #300 Please specify in addition to the above: Electrical features other than standard (4VDC, IP65/NEMA4) If explosion-proof accessories are required such as solenoids, pressure switches, etc., please define classification. Control trim material other than standard Required standards, certifications and approval Standard- leave empty Control function End connection standard ANSI #50 (FF or RF) ANSI #300 (FF or RF) Grooved ISO PN6 ISO PN5 Other (specify) 6 Specification for engineers The deluge valve shall be hydraulically operated, direct elastomeric diaphragm-seal, single chamber weir type. The valve shall consist of three major components: the body, cover and the diaphragm assembly. The diaphragm shall be the only moving part. The diaphragm forms a sealed control chamber in the upper portion of the valve, separating operating pressure from line pressure. Packing glands stuffing boxes and dynamic o-ring seals are not permitted and there shall be no shafts, discs, bearings or pistons operating the main valve. No hourglass-shaped disc retainers shall be permitted and no V-type, U-type or other slotted type disc guides shall be used. The valve shall contain a nylon reinforced rubber diaphragm, elastic & resilient through its entire surface without vulcanized radial discs and/or reinforcements. The diaphragm shall not be guided by any shafts or bearings and shall not be in close contact with other valve parts except for its sealing surface. Maintenance, disassembly and reassembly of all the valve s components shall be made possible on site and in-line, without the need to remove the valve from the line. Standard material valves such as Ductile Iron (ASTM A-536 65-45-) and Cast Steel (WCB A-6) should be coated with high-built fusion-bonded epoxy (FBE) and a UV protective topcoat conforming to EN944 C4 & C5 high & very high corrosivity protection grades. Naval quality/very high corrosivity protection grade conforming to EN944 C5M is available upon request. Other coating standards such as NORSOK or ANSI/NACE as well as coatings for special material valves such as austenitic Stainless Steel (CF8M/ASTM A-36 ) and Nickel Aluminum Bronze (ASTM B-48) can be supplied upon request. The valve should be UL listed under category VLFT for fire protection service. Dorot & Dorot companies worldwide reserve the right to make changes without notice including product specification and configuration, content, description(s), dimensions etc. The Information herein is subject to change without notice. Dorot shall not be held liable for any errors. All rights reserved. Copyright by Dorot. Dorot Control Valves www.dorot.com e-mail: fp@dorot.com Edition 0.09