Technical specifications - Johnson Controls - LIT-1924020 - Accessory - VB-3766, VB-3966, VB-4332 Series Brass Flare Valve Bodies, 1/2 in. Two-Way and Three-Way

VB-3766, VB-3966, VB-4332 Series Brass Flare Valve Bodies, 1/2 in. Two-Way and Three-Way

Brand
Johnson Controls
Product name
VB-3766, VB-3966, VB-4332 Series Brass Flare Valve Bodies, 1/2 in. Two-Way and Three-Way
Document type
Catalog Page
Document number
LIT-1924020
Revision date
2019-09-19
Language
English
VB-3766, VB-3966, VB-4332 Series Bronze Flare Valve Bodies,1/2 in. Two-Way and Three-Way

Service

Hot and cold water

Valve stem diameter

1/4 in.

Maximum seat leakage

PDTC and PDTO: 0.01% of maximum rated valve capacity (Cv);

Three-way mixing: 0.25% of maximum rated valve capacity (Cv)

Maximum recommended operating differential pressure for valve sizing

35 psi (245 kPa)

Valve stroke length (travel)

Two-way (VB-3766, VB-3966): 1/2 in.

Three-way (VB-4332): 5/16 in.

Maximum allowable pressure/temperature

(Two-way) VB-3766, VB-3966: 400 psi (2,800 kPa) up to 150 ° F (66 ° C) decreasing to 345 psi (2,415 kPa) at 281 ° F (140 ° C);

(Three-way mixing) and VB-4332: 240 psi (1,750 kPa) maximum to 281 ° F (140 ° C)

Fluid operating temperature limits

For VA-805x Electric Actuators:35°F-195 ° F (2°C-90 ° C);

For all pneumatic actuators:35°F-281 ° F (2°C-38 ° C)

Maximum closeoff pressures

Refer to the V-3766, V-3966, and V-4332 Brass Pneumatic Flare Valves 1/2 in. Two-Way and Three-Way Catalog Page (LIT-1924115).

Flow characteristics

VB-3766

PDTC: equal percentage

VB-3966

PDTO: Cv 1.7: equal percentage;Cv 3.2: modified equal percentage

VB-4332

Both ports: Cv 1.0/1.5 linear;

PDTC/PDTO: Cv 1.7/2.3 quick opening/linear

Materials

Stem

Stainless steel

Plug

PDTC (N.O.) and PDTO (N.C.): brass with molded and bonded composition disk;

Three-way mixing: brass (metal-to-metal)

Body

Cast bronze with natural finish

Packing

Non-adjustable EPR (Ethylene Propylene Rubber) Ring Packs

Body style and end connection

Offset globe for 1/2 in. S.A.E. flared connections

Rangeability and flow coefficient

Max. Cv (kv) — rangeability

VB-3766PDTC

1.0 (.85) — 7:1

1.7 (1.5) — 12:1

3.2 (2.7) — 23:1

VB-3966PDTO

1.8 (1.5) — 12:1

2.7 (2.3) — 23:1

VB-4332Mix

1.0 (.85) PDTC port / 1.5 (1.28) PDTO port— 10:1 for PDTC port, 4:1 for PDTO port

1.7 (1.5) PDTC port / 2.3 (1.9) PDTO port— 6:1 for both ports

Dimensions (end-to-end)

VB-3766, VB-4332

3-3/8 in.

VB-3966

3-3/4 in.

Recommended actuators

Pneumatic

V-3000-1, V-3000-8003

Electric

VA-805x

WARNING
  • This product is made of copper alloy, which contains lead. The product is therefore not to be used on drinking water.
WARNING
  • This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
WARNING
  • WARNING: BRASS MAY CONTAIN LEAD
  • To fulfill our obligations towards Article 33, in accordance to the European REACH Regulation No 1907/2006 EC, we hereby inform you that this article contains the following Substances of Very High Concern mentioned on the Candidate list: Lead