Submittal Sheet

ManualsBrandsHoneywell ManualsDampers3/4" NPT Two-Way Unitary Valve (2.6 Cv)

SPECIFICATION DATA

77-9857EF

® U.S. Registered Trademark

VP531A,C

Terminal Unit Valves

GENERAL

The VP531A,C Terminal Unit Valves are normally-open,

single-seated valves that provide proportional control of steam

or hot/cold water in terminal units. These valves are available

with threaded NPT or soldered end connections. The VP531A

is intended for control of water at a maximum of 180°F (82°C).

The VP531C is intended for water or steam at a maximum of

240°F (116°C).

FEATURES

• Available in several capacities and spring ranges for

various application requirements.

• Easily replaceable actuator assembly for convenience

of service.

• Compact size for use inside most unit enclosures.

SPECIFICATIONS

Models: See Table 1.

Dimensions in in. (mm): See Fig. 1.

Construction:

Body: Cast bronze.

Disc and plug:

VP531A: Rubber.

VP531C: Teflon and brass.

Seat: Bronze; integral with body.

Stem: Stainless steel, 3/16 in. (5 mm) diameter.

Bonnet nut seal: Reusable copper ring.

Packing:

VP531A: Rubber, spring-loaded, self-adjusting.

VP531C: Teflon, spring-loaded, self-adjusting.

Actuator: Rolling diaphragm type.

Flow Characteristics: Modified equal percentage.

Body Pressure Rating (maximum): 150 psi (1034 kPa).

Spring Range in psi (kPa):

VP531A: 2-5 (14-34) and 3-10 (21-69).

VP531C:

Series 1: 2-5 (14-34).

Series 2: 2-5 (14-34). A loose 3-10 (21-69) spring is

included.

Close-Off Ratings: See Fig. 2.

Summary of content (4 pages)

PAGE 1
VP531A,C Terminal Unit Valves SPECIFICATION DATA FEATURES • Available in several capacities and spring ranges for various application requirements. • Easily replaceable actuator assembly for convenience of service. • Compact size for use inside most unit enclosures. GENERAL The VP531A,C Terminal Unit Valves are normally-open, single-seated valves that provide proportional control of steam or hot/cold water in terminal units. These valves are available with threaded NPT or soldered end connections.
PAGE 2
VP531A,C TERMINAL UNIT VALVES Table 1. VP531 Models. Controlled Medium Temperature (maximum): VP531A: 180°F (82°C). VP531C: 240°F (116°C). Allowable difference for alternating hot and cold water: 140°F (78K). Model VP531A NPT 1/2 Soldered C7987A NPT THREADED BODY B C D 1/2 in. NPT (1.6 or 2.3 Cv) 1/2 in. (13 mm) pipe 4-1/8 in. 2-9/32 in. (104 mm) (58 mm) — 3/4 in. NPT (2.6 or 3.3 Cv) 3/4 in. (19 mm) pipe 4-3/16 in. 2-7/16 in. (106 mm) (61 mm) — 1/2 in. Solder (1.6 Cv) 5/8 in. (16 mm) O.D.
PAGE 3
Vannes pour unités terminales VP531A et C FICHE TECHNIQUE CARACTÉRISTIQUES • Choix de débits et de gammes de pression du ressort compatibles avec diverses applications. • Actionneur simple à remplacer et facilitant l'entretien. • Taille compacte pour utilisation dans la plupart des installations.
PAGE 4
VANNES POUR UNITÉS TERMINALES VP531A ET C Température maximale du fluide réglé : VP531A : 82 °C (180 °F). VP531C : 116 °C (240 °F). Différence maximale admissible - alternance eau chaude et eau froide : 78 °K (140 °F). Tableau 1. Modèles de vannes VP531. Modèle Corps de vanne Taille (tuyau NPT ou diam. nom.) VP531A Filetage NPT 1/2 3/4 À souder D C Taille du corps de vanne A (Canalis.