V246 Series 2-Way Pressure-Actuated Water-Regulating Valves for High-Pressure Refrigerants

Transcription

1 Code No. LIT Issued January 1, 1 V46 Series -Way Pressure-Actuated Water-Regulating Valves for High-Pressure Refrigerants Description The V46 Series -Way Pressure-Actuated Water-Regulating Valves for High-Pressure Refrigerants come in two types of control action: direct acting or reverse acting. V46 valves regulate water flow to control refrigerant head pressure in systems with water-cooled condensers. The V46 Series Valves are available in /8 in. through 1-1/ in. sizes and have a maximum allowable water pressure of 15 psi (. bar). V46 valves have an adjustable opening point in a refrigerant pressure range of to 4 psi (1.8 to 7.6 bar). V46 valves may be used with standard non-corrosive refrigerants. Maritime models, which have nickel copper (Monel ) internal parts, are available for applications where the media may be corrosive to the internal parts. Features No Close Fitting or Sliding Parts in Water Passages Accessible Range Spring Take-Apart Construction Pressure-Balanced Design Corrosion-Resistant Material for Internal Parts Repair Information If the V46 Series -Way Pressure-Actuated Water-Regulating Valve for High Pressure Refrigerants fails to operate within its specifications, refer to the V46 Series -Way Pressure-Actuated Water-Regulating Valves for High Pressure Refrigerants Product Bulletin (LIT ) for a list of repair parts available. 1 of 9 V46 Series Valve Valve Selection North American Standard Production Models - Range to 4 psi Product Code Number Construction Valve Size and Connection Element Style Shipping Weight, lb (kg) V46GA1-1C Direct Acting, Commercial /8 in. NPT Screw Style (.8) V46GB1-1C Direct Acting, Commercial 1/ in. NPT Screw Style 5. (1.4) V46GC1-1C Direct Acting, Commercial /4 in. NPT Screw Style 5.7 (1.7) V46GD1-1C Direct Acting, Commercial 1 in. NPT Screw Style 5 9. (4.) V46GE1-1C Direct Acting, Commercial 1-1/4 in. NPT Screw Style 5 (4.5) V46GM1-1C Direct Acting, Commercial 1-1/4 in. Union Sweat Style 5 (4.5) V46GR1-1C Direct Acting, Commercial 1-1/ in. Flange Style (6.) V46HA1-1C Direct Acting, Maritime /8 in. NPT Screw Style (.8) V46HB1-1C Direct Acting, Maritime 1/ in. NPT Screw Style 5. (1.4) V46HC1-1C Direct Acting, Maritime /4 in. NPT Screw Style 5 4. (.) V46HD1-1C Direct Acting, Maritime 1 in. NPT Screw Style (4.) V46HE1-1C Direct Acting, Maritime 1-1/4 in. NPT Screw Style 5. (4.7) V46HR1-1C Direct Acting, Maritime 1-1/ in. ASME Flange Style (6.) V46QA1-1C Reverse Acting, Commercial /8 in. NPT Screw Style (.8) V46KA1-1C Direct Acting, Commercial, /8 in. NPT Screw Style (.8) Low V46QB1-1C Reverse Acting, Commercial 1/ in. NPT Screw Style 5. (1.4) V46QC1-1C Reverse Acting, Commercial /4 in. NPT Screw Style 5.7 (1.7) V46QD1-1C Reverse Acting, Commercial 1 in. NPT Screw Style 5 9. (4.) V46QE1-1C Reverse Acting, Commercial 1-1/4 in. NPT Screw Style 5 (4.5) V46QR1-1C Reverse Acting, Commercial 1-1/ in. Flange Style (6.) European Standard Production Models - Range 1.8 to 7.6 bar (Part 1 of ) Product Code Number Construction Valve Size and Connection Element Style Shipping Weight, kg (lb) V46GA1A1C Direct Acting, Commercial /8 in. BSPP Screw, ISO 8 Style (4.1) V46GB1A1C Direct Acting, Commercial 1/ in. BSPP Screw, ISO 8 Style (.) V46GC1A1C Direct Acting, Commercial /4 in. BSPP Screw, ISO 8 Style (.7) V46GD1B1C Direct Acting, Commercial 1 in. BSPT Screw, ISO 7 Style 5 4. (9.) V46GE1B1C Direct Acting, Commercial 1-1/4 in. BSPT Screw, ISO 7 Style () V46GR1B1C Direct Acting, Commercial 1-1/ in. Flange, DIN5 Style 5 6. (1.6) V46HA1B1C Direct Acting, Maritime /8 in. BSPP Screw, ISO 8 Style (4.1) V46HB1B1C Direct Acting, Maritime 1/ in. BSPP Screw, ISO 8 Style (.) V46HC1B1C Direct Acting, Maritime /4 in. BSPP Screw, ISO 8 Style 5. (4.)

2 European Standard Production Models - Range 1.8 to 7.6 bar (Part of ) Product Code Number Construction Valve Size and Connection Element Style Shipping Weight, kg (lb) V46HD1B1C Direct Acting, Maritime 1 in. BSPP Screw, ISO 8 Style 5 4. (9.5) V46HE1B1C Direct Acting, Maritime 1-1/4 in. BSPP Screw, ISO 8 Style (.) V46HR1B1C Direct Acting, Maritime 1-1/ in. Flange, DIN861 Style 5 6. (1.6) Valve Sizing Information Each application is unique and requires specific engineering data to properly size and design a system to fulfill the appropriate requirements. Typically, a valve is replaced with another valve of the same size in a properly sized and engineered system. In North America, contact Johnson Controls/PENN Refrigeration Application Engineering at to obtain specific engineering data. In other areas, contact the local Johnson Controls sales office to obtain specific engineering data. To make a rough field estimate of the size of valve for an application, find the valve size needed by locating a point on a flow chart that satisfies these requirements: water flow required by the condenser () refrigerant head pressure rise (P RISE ) available water pressure (P AVAIL ) Follow these steps, and use the information obtained to locate a point on one of the flowcharts that satisfies all three steps. 1. Take the water flow required by the condenser () from information provided by the manufacturer of the condensing unit. If the manufacturer s information is unavailable, use the following information to make a rough approximation of water flow in gallons per minute [cubic meters per hour (m /hr)] : System Capacity (Tons of Refrigeration) Outlet Water Temperature (Temp. Outlet ) Inlet Water Temperature (Temp. Inlet ) Calculate the flow using the following formula: = Tons of Refrigeration x (Temp. Outlet - Temp. Inlet) Required Note: If the outlet temperature is unknown, assume it to be F (6C ) above the inlet temperature.. Determine refrigerant head pressure rise above the valve opening point (P RISE ) using Figure and the following steps: a. The Valve Closing Pressure (P CLOSE ) is equal to the refrigerant pressure at the highest ambient temperature the refrigeration equipment experiences in the Off cycle. Use a Pressure-Temperature Chart for the refrigerant selected to find this pressure. b. To approximate the Valve Opening Pressure (P OPEN ), add about psi (.7 bar) to the Valve Closing Pressure. Note: Add about psi (1.4 bar) for /8 in. valves. P OPEN = P CLOSE + psi (.7 bar) Valve Opening Pressure FIG:flw_eqn FIG:eqn_opn_prssr c. From the Pressure-Temperature Chart for the refrigerant selected, read the Refrigerant Condensing Pressure (P COND ) (operating head pressure) corresponding to the selected condensing temperature. d. Subtract the Valve Opening Pressure from the Refrigerant Condensing Pressure. This gives the head pressure rise. P = P - P RISE COND OPEN Refrigerant Head Pressure Rise. Determine the available water pressure to the valve (P AVAIL ) using the following steps. This is the actual water pressure available to force water through the valve. a. Determine the inlet pressure (P IN ). This is the water pressure from city water mains, pumps, or other sources. b. Pressure drop through condenser (ΔP COND ) is the difference in water pressure between the condenser inlet and the condenser outlet. Obtain this information from the condenser manufacturer. c. Estimate or calculate the pressure drop through all associated piping (P LOSS ). d. Subtract the ΔP COND and P LOSS from P IN. The result is P AVAIL. P Loss P P = P - COND 1 P Cooling Tower Condenser P Available Water Pressure Pump 4. Select the proper valve size from the flowcharts by locating a point on a chart that satisfies the flow, the head pressure rise above opening point, and the pressure drop across the valve. Metric Conversions Use these equations to convert between U.S. and S.I. units. 1 dm /s =.6 m /h = 15.9 U.S. gal. /min. = 1. U.K. gal. /min. 1 bar = kpa =.1 MPa = 1. kg/cm =.987 atm = 14.5 psi P 1 -Way Valve FIG:eqn_hd_prssr_rs P Loss 1 P P Loss 1 Loss FIG:wy_prss_drp P IN = LOSS P AVAIL = PIN - ( P COND + P LOSS) of 9

3 V46 charts The maximum recommended differential water pressure across a valve is 6 psi (4.1 bar) (4.1) 5 (.4) 4 (.8) (.1) 5 (1.7) (1.4) (.7) 5 (.) (.1) FIG:V46_.75 DA /8 in. Direct Acting Valve chart of 9

4 (4.1) 5 (.4) 4 (.8) (.1) 5 (1.7) (1.4) (.7) 5 (.) (.1) 7 FIG:V46DA_ / in. Direct Acting Valve chart (4.1) 5 (.4) 5 4 (.8) (.1) 5 (1.7) (1.4) (.7) 5 (.) (.1) /4 in. Direct Acting Valve chart FIG:V46DA_75 4 of 9

5 (4.1) 5 (.4) 4 (.8) (.1) 5 (1.7) (1.4) (.7) 5 (.) (.1) FIG:V46DA_ 1 in. Direct Acting Valve chart (4.1) 1 5 (.4) 4 (.8) 9 (.1) 8 5 (1.7) 7 (1.4) 6 (.7) (.) (.1) /4 in. Direct Acting Valve chart FIG:V46DA_15_ of 9

6 Dimensions A B B D C D C E Port 1 Port E FIG:V46_thrdd A FIG:V46_anglbdy V46 Screw Connection Valves Dimensions V46 Angle-Body Screw Connection Valves Dimensions V46 Screw Connection Valves Dimensions Valve Size A B C D E /8 in. -5/8 (67) 1-5/8 (41) 6-1/ (166) -1/ (89) (77) 1/ in. -1/16 (78) (51) 7-/16 (18) -1/16 (96) -/8 (86) /4 in. -/8 (86) -/16 (55) 8 () 4-/16 (6) -1/16 (98) 1 in. 4-/4 (11) -1/16 (71) -1/ (67) 5-15/16 (151) 4-9/16 (116) 1-1/4 in. 4-/4 (11) -1/16 (71) -7/8 (76) 6-1/8 (156) 4-/4 (11) V46 Angle-Body Screw Connection Valves Dimensions Valve Size A B C D E /8 in. -/4 (7) 1-5/8 (41) 6-15/16 (176) -5/8 (9) -1/8 (8) 1/ in. -1/8 (8) (51) 7-1/ (191) -7/8 (98) -1/ (88) /4 in. -9/16 (9) -1/8 (55) 8-9/16 (17) 4-5/16 (1) 4 (1) 6 of 9

7 A B D C Port 1 Port E FIG:V46_unnbdy V46 Union Sweat Connection Valves Dimensions V46 Union Sweat Connection Valves Dimensions Valve Size A B C D E 1-1/4 in. 4-/4 (11) -1/16 (71) -7/8 (76) 6-1/8 (156) 4-/4 (11) V46 Flange Valve, Commercial Service - Dimensions Valve Size A B C D E F G H 1-1/ in. 5-5/16 (15) 9/16 (14) 6-1/8 (156) 4-/4 (11) -7/8 (76) 5-1/4 (1) -5/8 (67) 1-7/8 (48) V46 Flange Valve, Commercial Service - Flange Specifications Valve Size Regional Version Number of Holes Hole Size Bolt Circle 1-1/ in. North American 4 5/8 in. (16 mm) -7/8 in. (98 mm) 1-1/ in. European, DIN5 Flanges 4 18 mm 1 mm V46 Flange Valve, Maritime Service - Dimensions Valve Size A B C D E F G H 1-1/ in. 5-5/16 (15) 9/16 (14) 6-1/8 (156) 4-/4 (11) -7/8 (76) 5-1/4 (1) -5/8 (67) 1-7/8 (48) V46 Flange Valve, Maritime Service - Flange Specifications Valve Size Regional Version Number of Holes Hole Size Bolt Circle 1-1/ in. North American 4 5/8 in. (16 mm) -7/8 in. (98 mm) 1-1/ in. European, DIN861 Flanges 4 18 mm 1 mm 7 of 9

8 A F B G C E H D FIG:flng_bdy V46 Flange Valve Dimensions Materials North American V46 Materials Nominal Valve Size: /8 in. to /4 in. 1 in. to 1/ in. Maritime (All Sizes) Material Body (Commercial) Cast Brass (Commercial) Cast Iron/Rust Resisting Finish Cast Bronze Seat Aluminum Bronze Aluminum Bronze Monel Disc BUNA-N BUNA-N BUNA-N Disc Cup Brass Brass Monel Disc Stud Brass Brass Monel Stem/Extension Sleeve Brass Brass Monel Diaphragms Nylon Reinforced BUNA-N Nylon Reinforced BUNA-N Nylon Reinforced BUNA-N Refrigerant Contact Pressure Cup Series Stainless Steel Series Stainless Steel Series Stainless Steel Element Bellows Series Stainless Steel Series Stainless Steel Series Stainless Steel Bellows Ring Steel/Nickel Plated Steel/Nickel Plated Steel/Nickel Plated 8 of 9

9 European V46 Materials Nominal Valve Size: /8 in. to /4 in. 1 in. to 1/ in. Maritime (All sizes) Material Body (Commercial) Hot Forged Brass (Commercial) Cast Iron/Rust Resisting Finish Cast Bronze Seat Aluminum Bronze Aluminum Bronze Monel Disc BUNA-N BUNA-N BUNA-N Disc Cup Brass Brass Monel Disc Stud Brass Brass Monel Stem/Extension Sleeve Brass Brass Monel Diaphragms Nylon Reinforced BUNA-N Nylon Reinforced BUNA-N Nylon Reinforced BUNA-N Refrigerant Contact Pressure Cup Series Stainless Steel Series Stainless Steel Series Stainless Steel Element Bellows Series Stainless Steel Series Stainless Steel Series Stainless Steel Bellows Ring Steel/Nickel Plated Steel/Nickel Plated Steel/Nickel Plated Technical Specifications Product Factory-Set Opening Point Maximum Working Pressure Opening Point Adjustment Range Media V46 Series -Way Pressure-Actuated Water-Regulating Valves for High-Pressure Refrigerants psi (1.8 bar) 6 psi (4.4 bar) to 4 psi (1.8 to 7.6 bar) 15 psi (. bar) Maximum, -4 F to 17 F ( - C to 77 C) glycol/water or liquids with low freezing points that are compatible with valve materials 9 of 9