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Honeywell VP531A Installation Instructions Manual

Pneumatic terminal unit valves
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BEFORE INSTALLATION
The VP531A,C Valve is a single seated, normally-open,
straight-through pneumatic valve designed to provide equal
percentage flow in terminal units. It is available with NPT
threaded or soldered end connections.
The valve should be installed so the stem is anywhere
between upright and horizontal. The actuator cannot be lower
than the body. The direction of flow must be in the same
direction as the arrow on the valve body.
Refer to Fig. 1 for dimensions to determine the amount of
space required for proper installation. Be sure to allow enough
clearance around the actuator top for servicing the valve after
installation.
AIR CONNECTION FOR
1/4 IN. (6 mm) O.D. TUBING
2-1/4 (DIA)
(54)
3-1/2
(89)
1
(25)
C
NPT THREADED BODY
Body Size
A
1/2 in. NPT
1/2 in. pipe
(1.6 or 2.3 Cv)
3/4 in. NPT
3/4 in. pipe
(2.6 or 3.3 Cv)
1/2 in. Solder
5/8 in. (16 mm) O.D.
(1.6 Cv)
copper tubing
3/4 in. Solder
7/8 in. (22 mm) O.D.
(2.6 or 3.3 Cv)
copper tubing
Fig. 1. Approximate dimensions of
VP531A,C in in. (mm).
® U.S. Registered Trademark
Copyright © 2002 Honeywell International Inc.
All Rights Reserved
Pneumatic Terminal Unit Valves
MINIMUM
CLEARANCE
FOR
1-1/2
SERVICING
(38)
VALVE
1-1/2
(38)
REUSABLE COPPER
RING SEAL FOR
BONNET NUT
B
A
A
D
C
C7987A
SOLDER BODY
B
C
4-1/8 in.
2-9/32 in.
(104 mm)
(58 mm)
4-3/16 in.
2-7/16 in.
(106 mm)
(61 mm)
4-1/8 in.
1-5/8 in.
1/2 in.
(104 mm)
(41 mm)
(13 mm)
4-3/16 in.
1-1/2 in.
3/4 in.
(106 mm)
(38 mm)
(19 mm)
INSTALLATION
Actuator Spring Selection
Series 2 VP531C Valves are built with a green (2-5 psi)
actuator spring. Shipped with the valve is a loose orange
(3-10 psi) spring. If desired, you can replace the green spring
with the orange. To make this change, you must remove the
cover fastener (see Fig. 2).
Before using the orange spring, make sure it can provide
adequate close off for the application. Review the close-off
ratings in Fig. 5.
VP531A,C Soldered Body (Fig. 2)
CAUTION
Soldered Body Valve Damage Hazard.
Connecting the valve without removing the
internal assembly can overheat and damage the
plug and packing beyond repair.
Remove the top and insert assembly before
connecting the VP531 soldered body valve.
The valve is shipped with a loose bonnet nut allowing easy
removal of the top and insert assembly. Lift the assembly out
before soldering the valve into place.
When soldering is completed, replace the top and insert
assembly and tighten the bonnet nut firmly enough to
compress the copper washer seal (35 to 45 ft-lb torque).
D
VP531A,C
INSTALLATION INSTRUCTIONS
95-7251EF-1

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  Summary of Contents for Honeywell VP531A

  • Page 1 Pneumatic Terminal Unit Valves INSTALLATION INSTRUCTIONS BEFORE INSTALLATION INSTALLATION The VP531A,C Valve is a single seated, normally-open, Actuator Spring Selection straight-through pneumatic valve designed to provide equal percentage flow in terminal units. It is available with NPT Series 2 VP531C Valves are built with a green (2-5 psi) threaded or soldered end connections.
  • Page 2: Typical Operation

    COPPER CONNECTION 5/8 OR 7/8 IN. O.D. (16 OR 22mm) FLOW C7988 Fig. 2. VP531A,C solder body connection. VP531A,C NPT Threaded Valve When connecting the valve into the system, use pipe dope sparingly and apply to the pipe threads only.
  • Page 3: Specifications

    Steam (VP531C only): 10 psi (69 kPa). (131) (165) (145) (179) Close Off Ratings: See Fig. 5. (159) (193) (172) (207) 0 140 (138) (276) (414) (552) (689) (827) (965) DIFFERENTIAL PRESSURE CLOSE OFF RATINGS psi (kPa) C7715A Fig. 5. VP531A,C close off ratings. 95-7251EF–1...
  • Page 4 Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 Printed in U.S.A. on recycled 95-7251EF–1 B.B. Rev. 12-02 www.honeywell.com paper containing at least 10%...
  • Page 5: Notice D'installation

    Vannes pneumatiques pour unité terminale VP531A,C NOTICE D'INSTALLATION AVANT D'INSTALLER CE PRODUIT… RACCORD D'AIR POUR Les VP531A et C sont des vannes pneumatiques CANALISATION DE DÉGAGEMENT normalement ouvertes à passage direct et à simple siège qui 6 mm (1/4 PO) DIAM. EXT.
  • Page 6: Installation

    RACCORD EN CUIVRE DE 16 OU 22 mm (/5/8 OU 7/8 po) DIAM. EXT. CF7988 Fig. 2. Raccordement des vannes à souder VP531A et C. Vannes VP531 A et C à raccord fileté NPT Pour raccorder la vanne au système, appliquer du mastic pour tuyaux sur la partie filetée du tuyau seulement.
  • Page 7: Fonctionnement Typique

    VANNES PNEUMATIQUES POUR UNITÉ TERMINALE VP531A,C Installer la vanne selon les méthodes de tuyautage recommandées pour empêcher le gauchissement du corps de vanne. Voir la Fig. 3. UNE TROP GRANDE 2 FILETS PROPRES – TAILLE LONGUEUR DE QUANTITÉ DE MASTIC QUANTITÉ...
  • Page 8 By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.

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