VAREC 2010B/2020B PRESSURE AND VACUUM RELIEF VALVES

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Bruce Glenn
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VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Weight-loaded relief valves that protect tanks from damage or deformation, minimize emissions to the environment and loss of product due to evaporation

Modular design provides flexibility of field installation and allows easy reconfiguration, repair or on-site upgrading. Oversized pressure and vacuum ports provide maximum flow capacity.

1 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Weight-loaded relief valves that protect tanks from damage or deformation, minimize emissions to the environment and loss of product due to evaporation FEATURES 0B GENERAL APPLICATION TECHNICAL DATA B Choice of vent to atmosphere or pipe away models. Modular design provides flexibility of field installation and allows easy reconfiguration, repair or on-site upgrading. Oversized pressure and vacuum ports provide maximum flow capacity. Easily removable hood and cover for inspection and maintenance. Seat rings are both interchangeable and field replaceable. Protective screens at pressure and vacuum ports prevent entrance of foreign matter. Outlet adapter on the B Series is one pipe size larger than the valve inlet flange to optimize flow capacity. Zero product loss when combined with a vapor recovery system. Replaceable and interchangeable pressure and vacuum seat rings. All-weather non-frosting and ice-resistant coating option available for valve seats and guides. Extended service options available for high temperature and chemical applications. The 0B and B are designed for use on atmospheric and low pressure storage tanks or for emergency venting on smaller tanks. The 0B vents to atmosphere; the B allows vapors to be piped away for recovery. Materials: Aluminum, carbon steel, stainless steel Special materials on application Sizes 0B/B: to (DN 0 to 00) B/B: x to x (DN 0 x 0 to 00 x 0) Connections: Drilled flanges settings: up to psig (0. barg). Temperature range: - to 0 F (- to C) Emerson.com/FinalControl Emerson. All Rights Reserved. VCTDS-00-EN /0

2 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES SPECIFICATIONS The 0B and B Series pressure and vacuum relief valves are available in a variety of configurations to meet your specific needs. Sizes 0B/B: (DN 0) (DN 0) (DN 00) (DN 0) (DN 0) 0 (DN ) (DN 00) Sizes B/B: x (DN 0 x DN 0) x (DN 0 x DN 00) x (DN00 x DN 0) x (DN0 x DN 0) x 0 (DN 0 x DN ) 0 x (DN x DN 00) x (DN 00 x DN 0) FLANGED CONNECTIONS - STANDARD FLANGE DRILLING Aluminum Drilled to ANSI Class 0 dimensions (flat face) Drilled to DIN ( bar) dimensions (flat face) CS, DI and SS body Drilled to ANSI Class 0 dimensions (raised or flat face) Drilled to imperial DIN ( bar) dimensions (raised or flat face Drilled to JPI or JIS (raised or flat face) - consult your sales representative Mounting studs Fractional (imperial) Metric TESTING Each valve is tested for proper setting and for a leakage rate of less than SCFH (0.0 Nm /hr) of air at 0 percent of the set point. Each valve is tested for leak tightness at percent of set point as required in API Standard 00. PARTS AND MATERIALS (see page ) Material code Item Body Aluminum Aluminum Carbon steel SS Weatherhood Aluminum Aluminum Carbon steel SS Guide stem Aluminum SS SS SS Guide posts SS SS SS SS Pallet Aluminum SS SS SS Seat ring Aluminum SS SS SS Seat ring retainer [] Polypropylene Polypropylene Polypropylene Polypropylene Insert [] PTFE PTFE PTFE PTFE Insert retainer Aluminum SS SS SS 0 Screen [] HDPE HDPE HDPE HDPE Gaskets [] Fiber Fiber Fiber Fiber O-ring [] NBR NBR NBR NBR Weights Lead Lead Lead Lead NOTE. Materials are as standard. See model option code for other materials and their associated temperature ranges.. PTFE coated aluminum may be supplied with material codes - to achieve lower settings.. All nuts and cap screws are SS.

3 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES PARTS AND MATERIALS 0B (see page ) 0 0 B (see page ) 0

4 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES SPECIFICATIONS SETTING INFORMATION Min. pressure set, oz/in Min. vacuum set, oz/in Low set range High set range Size Aluminum SS Aluminum SS (min. to oz/in ) (min. to oz/in ) (oz/in to psig) (oz/in to psig) 0B B B B Lower settings may be available. Please consult your sales representative. All valves are factory tested for leakage and correct setting prior to shipment. Certification of valve setting is available upon request. The mixed pressure/vacuum set ranges, 0 and 00 (Low pressure/high vacuum and high pressure/low vacuum) use heavier pallets and therefore have higher low set range minimums. For these cases, add the applicable value from the table (right) to the low set range minimum. (This increase does not apply for 0 and B/B.) Size Aluminum SST

5 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES DIMENSIONS 0B AND B Size code 0 Nominal pipe size (0) (0) (00) (0) (0) 0 () (00) A ⅛ () () ⅛ () (0) ⅞ () () ⅝ () B ½ () 0¾ () ⅜ (0) () ⅝ () () () C ⅞ () ¼ () () ½ () () () ⅜ () D* 0 () () ½ () () ⅝ () () ⅞ (0) D** () ¼ () ⅝ () ½ () ¾ () () ⅞ (0) SECTION A-A A B A * Low set ** High set All other figures are for the high set option. A C Lead weight (A/R) D B AND B Size code 0 SECTION A-A Nominal pipe size x (0 x 0) x (0 x 00) x (00 x 0) x (0 x 0) x 0 (0 x ) 0 x ( x 00) x (00 x 0) A () ⅜ () () () () ⅝ () ⅜ () B ¼ () ⅞ () () 0 () ⅛ (0) ⅛ (0) ¾ () C* () 0¾ () ¾ () ¾ () ⅛ () (00) () C** ½ () ½ () () () ½ () ¼ () () D ¾ () ⅜ () () 0½ () ⅛ () ⅞ () ¾ (0) E ¾ () () () ¼ () 0¾ () () () A A E D A * Low set ** High set All other figures are for the high set option. Lead weight (A/R) Dimensions are for preliminary general information and should not be used for construction purposes. Certified dimensional drawings are available upon request. C B Dimensions, in. (mm)

6 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at 0. inch of water 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at inch of water 0 0 API Std. 00. Certified test data by independent 0 0 0. 0. 0. 0 0 0 0 0 0 0 0 0 00 00 00 00 00 000 Thousands of cubic feet/hour at 0 F and.

7 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at inch of water 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

8 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

9 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

10 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) 0

11 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

12 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for 0B series, set at API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

13 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at 0. inch of water 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at inch of water 0 0 API Std. 00. Certified test data by independent 0 0 0. 0. 0. Thousands of cubic feet/hour at 0 F and.

14 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at inch of water 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

15 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

16 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

17 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

18 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at 0 0 API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

19 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES Flow curves for B series, set at API Std. 00. Certified test data by independent Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH) Thousands of cubic feet/hour at 0 F and. psia, air flow (SCFH)

20 VAREC 0B/B PRESSURE AND VACUUM RELIEF VALVES ORDERING INFORMATION SELECTION GUIDE Example: 0B T FF OP 0 0 Model Air cushion pressure/vacuum relief valve Model Vent-to-atmosphere Pipe-away Configuration OB Standard B All weather type (- F to 0 F) Size " (" x ") " (" x 0") " (" x ") 0 0" (0" x ") " (" x ") " (" x ") " (" x ") Body/trim material Aluminum/aluminum (- F to F) Aluminum/ stainless steel (- F to F) Carbon steel/ stainless steel (- F to 0 F) stainless steel/ stainless steel (- F to 0 F) Insert material T PTFE (- F to 00 F) B NBR (-0 F to F) V FKM (- F to 00 F) Flange connection FF Flat face flange drilled to ANSI 0 with fractional studs MF Flat face flange drilled to ANSI 0 with metric studs FR Raised face flange drilled to ANSI 0 with fractional studs (not available on aluminum) MR Raised face flange drilled to ANSI 0 with metric studs (not available on aluminum) DF DIN flat face flange drilling DR DIN raised face flange drilling (not available on aluminum) Gasket/O-ring and retainer/screen material OP Standard fiber/nbr and plastic (-0 F to F) OS Standard fiber/nbr and stainless steel (-0 F to F) TP PTFE and plastic (- F to F) TS PTFE and stainless steel (- F to 0 F) BP NBR and plastic (-0 F to F) BS NBR and stainless steel (-0 F to F) VP FKM and plastic (- F to F) VS FKM and stainless steel (- F to 0 F) setting range (see table, page ) 0 Low setting 0 High setting setting range (see table, page ) 0 Low setting 0 High setting Example: " size aluminum body/ss trim, PTFE insert, 0 FF flanges, standard fiber/nbr gaskets, low set pressure and vacuum, temperature range: - F to F.

Introduction. Available materials. Aluminum Carbon Steel Stainless Steel Ductile Iron Special Materials on Application

Introduction. Available materials. Aluminum Carbon Steel Stainless Steel Ductile Iron Special Materials on Application VALVES & CONTROLS VAREC 00B/00B The Varec 00B/00B protects tanks from damage or deformation, and minimizes emissions to the environment, as well as loss of product due to evaporation. Introduction 00B